CN118466439A - A simulation experiment analysis and evaluation method for control sensitivity of magnetic field controller - Google Patents

Abstract

The present invention relates to the field of magnetic field controller testing technology, and in particular to a method for analyzing and evaluating the control sensitivity of a magnetic field controller through a simulation experiment, comprising the following steps: (1) setting a reference state of the magnetic field controller; (2) running test of the magnetic field controller; (3) environmental variable test; (4) magnetic field strength variable test; (5) comprehensive sensitivity analysis of the magnetic field controller. The present invention analyzes the influence of the magnetic field controller itself under the reference temperature, reference humidity, and reference magnetic field strength, and analyzes the sensitivity of the magnetic field controller by combining the above influence with the environmental variable test and the magnetic field strength variable test, thereby increasing the accuracy of the sensitivity analysis of the magnetic field controller; the present invention analyzes the sensitivity of the magnetic field controller under the environmental variables by adjusting the temperature variable and the humidity variable respectively, thereby increasing the accuracy and meticulousness of the sensitivity analysis of the magnetic field controller under the environment.

Description

A simulation experiment analysis and evaluation method for control sensitivity of magnetic field controller

Technical Field

The invention relates to the technical field of magnetic field controller testing, and in particular to a method for analyzing and evaluating a control sensitivity simulation experiment of a magnetic field controller.

Background Art

A magnetic field controller is a device used to generate, adjust and control magnetic fields. It is usually used in scientific research experiments, industrial production, medical diagnosis and other fields. A magnetic field controller can generate magnetic fields of different intensities and achieve precise control of the magnetic field by adjusting its parameters.

The sensitivity of a magnetic field controller is an important indicator of its quality. In some environments where magnetic field controllers have higher requirements, it is necessary to conduct experimental analysis and evaluation on the sensitivity of the magnetic field controller. The existing analysis of a magnetic field controller generally uses the magnetic field intensity adjusted to analyze the deviation between the response time and the magnetic field intensity. At the same time, the temperature and humidity of the experiment are adjusted to test the influence of the environment on the sensitivity of the magnetic field controller. The sensitivity of the magnetic field controller is then analyzed. However, this analysis method has the following problems.

1. Since the magnetic field controller has an impact on the magnetic field controller during its own operation, the magnetic field controller does not refer to the impact of its own operation during sensitivity analysis, which leads to inaccurate sensitivity analysis of the magnetic field controller.

2. When the magnetic field controller performs environmental sensitivity analysis, the impact of temperature and humidity on its sensitivity cannot be accurately analyzed, and when the temperature and humidity are higher or lower than the recommended operating temperature and humidity, their impact cannot be analyzed separately.

3. When the magnetic field controller adjusts the magnetic field strength, it generally adopts a method of quantitatively adjusting the magnetic field strength to detect its reaction time. This method has the problem of incomplete sensitivity analysis of the magnetic field controller.

Summary of the invention

The present invention solves the above-mentioned technical problems and adopts the following technical solutions: a method for analyzing and evaluating the control sensitivity of a magnetic field controller by simulating an experiment, comprising the following steps: (1) setting a reference state of the magnetic field controller: obtaining the recommended temperature and humidity of the magnetic field controller stored in a sensitivity test database, and obtaining the rated magnetic field strength of the magnetic field controller, adjusting the ambient temperature and humidity of the test site to the recommended temperature and humidity of the magnetic field controller, and using the recommended temperature, recommended humidity and rated magnetic field strength of the magnetic field controller as the reference temperature, reference humidity and reference magnetic field strength of the magnetic field controller, respectively.

(2) Magnetic field controller operation test: Obtain the operating parameters of the magnetic field controller under the conditions of reference temperature, reference humidity, and reference magnetic field strength. Analyze the sensitivity coefficient of the magnetic field controller under the operating conditions through the operating parameters of the magnetic field controller, which is recorded as λ; the operating parameters include power supply noise, mechanical vibration, and magnetic field drift.

(3) Environmental variable test: By changing the temperature and humidity of the test site environment and monitoring the magnetic field strength and magnetic field stability of the magnetic field controller, the sensitivity coefficient of the magnetic field controller under environmental variables is obtained, which is recorded as β.

(4) Magnetic field strength variable test: By changing the magnetic field strength of the magnetic field controller, the responsiveness, accuracy and stability of the magnetic field strength of the magnetic field controller are monitored and analyzed, and then the sensitivity coefficient of the magnetic field controller under the magnetic field strength variable is obtained.

(5) Comprehensive sensitivity analysis of magnetic field controller control: The comprehensive sensitivity of the magnetic field controller is obtained by summarizing and analyzing the sensitivity coefficient of the magnetic field controller under the operating state, the sensitivity coefficient under the environmental variables, and the sensitivity coefficient under the magnetic field strength variables.

Furthermore, the sensitivity coefficient of the magnetic field controller in operation is as follows: (21) The power supply noise decibel value during the operation of the magnetic field controller is monitored by the analytical formula: The power supply noise is calculated and recorded as λ1.

(22) The mechanical vibration generated during the operation of the magnetic field controller is monitored, and the vibration amplitudes of each time during the operation of the magnetic field controller are superimposed and the average vibration amplitude during the operation of the magnetic field controller is obtained by average calculation, which is recorded as the average vibration amplitude of the magnetic field controller. The analytical formula is: The mechanical vibration degree is calculated and recorded as λ2.

(23) The magnetic field generated by the magnetic field controller is monitored and the area covered by the magnetic field is obtained by analysis. The standard coverage area _Sb is read from the sensitivity test database during the operation of the magnetic field controller, and the area of the overlapped area between the two is recorded as the overlapped area _Spiao . The analytical formula is: The magnetic field drift is calculated and recorded as λ3.

(24) By reading the power supply noise, mechanical vibration, and magnetic field drift of the magnetic field controller, they are substituted into the analytical formula: The sensitivity coefficient λ of the magnetic field controller in the operating state is calculated, and e represents a natural constant.

Furthermore, the magnetic field stability of the magnetic field controller includes the magnetic field intensity change rate and the magnetic field direction deviation rate; the sensitivity coefficient of the magnetic field controller under environmental variables includes the sensitivity coefficient of the magnetic field controller under temperature variables and the sensitivity coefficient of the magnetic field controller under humidity variables.

Furthermore, the sensitivity coefficient of the magnetic field controller under the temperature variable is analyzed as follows: (31) by increasing the temperature of the test site by equal amounts for multiple times, and monitoring the magnetic field strength and magnetic field direction offset angle of the magnetic field controller at each preset time point when the temperature of the test site is increased each time, and recording them as α _i ^j , θ _i ^j , respectively, where i represents the i-th increase in the temperature of the test site, i=1,2,...,k, and j represents the j-th preset time point, j=1,2,…,m.

(32) The maximum magnetic field intensity and the minimum magnetic field intensity of the magnetic field controller at each test site temperature adjustment are selected and recorded as α _i ^max and α _i ^min respectively. The analytical formula is: The magnetic field intensity change rate _αxi of the magnetic field controller at each increase in the test site temperature is obtained, where _αstandard represents the reference magnetic field intensity of the magnetic field controller, m represents the number of preset time points, and ε represents the correction coefficient of the deviation between the maximum magnetic field intensity and the minimum magnetic field intensity of the magnetic field controller.

(33) Through analytical formula The magnetic field direction deviation rate _θxi of the magnetic field controller at each increase in the test site temperature is obtained.

(34) Similarly, the magnetic field intensity change rate of the magnetic field controller at each lowering of the test site temperature and the magnetic field direction deviation rate of the magnetic field controller at each lowering of the test site temperature are analyzed and recorded as αx' _i θx' _i respectively, and the formula is used The sensitivity coefficient β1 of the magnetic field controller under temperature variable is calculated, e represents a natural constant, an exemplary value of e is 2.72, ε1, ε2, ε3, and ε4 respectively represent the correction coefficient of the magnetic field intensity change rate of the magnetic field controller when the test site temperature is increased, the correction coefficient of the magnetic field intensity change rate of the magnetic field controller when the test site temperature is decreased, the correction coefficient of the magnetic field direction offset rate of the magnetic field controller when the test site temperature is increased, and the correction coefficient of the magnetic field direction offset rate of the magnetic field controller when the test site temperature is decreased.

Furthermore, the analysis method of the sensitivity coefficient of the magnetic field controller under the humidity variable is the same as the analysis method of the sensitivity coefficient of the magnetic field controller under the temperature variable, and the sensitivity coefficient β2 of the magnetic field controller under the humidity variable is obtained by analysis.

Furthermore, the sensitivity coefficient of the magnetic field controller under the environmental variable is analyzed by substituting the sensitivity coefficient of the magnetic field controller under the temperature variable and the sensitivity coefficient of the magnetic field controller under the humidity variable into the formula: Then the sensitivity coefficient β of the magnetic field controller under the environmental variables is obtained.

Furthermore, the analysis method for monitoring and analyzing the responsiveness, accuracy and stability of the magnetic field strength of the magnetic field controller is as follows: (41) the magnetic field strength of the magnetic field controller is adjusted multiple times, and the magnetic field strength reaction time after each magnetic field strength adjustment by the magnetic field controller is recorded as T _h , and the magnetic field strength value α after each magnetic field strength adjustment by the magnetic field controller ^{is adjusted as} _h , where h represents the number of the hth magnetic field strength adjustment of the magnetic field controller, h=1, 2, ..., n.

(42) After each magnetic field controller adjusts the magnetic field strength, it monitors the current magnetic field strength at each set time point, which is recorded as α1 _h ^p , where p represents the pth set time point, p = 1, 2, …, q, and is analyzed by the formula: The accuracy θ1 _h after each magnetic field controller adjusts the magnetic field strength is obtained, where q represents the number of set time points.

(43) After each magnetic field controller adjusts the magnetic field strength, the maximum and minimum values of the current magnetic field strength at each set time point are screened, and the following analysis is performed: The stability θ2 _h after each magnetic field controller performs magnetic field intensity adjustment is obtained. α1 _h ^max and α1 _h ^min respectively represent the maximum value and the minimum value of the current magnetic field intensity after the h-th magnetic field controller performs magnetic field intensity adjustment.

(44) Through analytical formula: The reaction rate θ3 _h after each magnetic field controller performs magnetic field strength adjustment is obtained, and _Th ^recommended represents the standard reaction time of the magnetic field strength after the h-th magnetic field controller performs magnetic field strength adjustment.

Furthermore, the sensitivity coefficient of the magnetic field controller under the magnetic field strength variable is analyzed by substituting the accuracy of the magnetic field controller after adjusting the magnetic field strength, the stability of the magnetic field controller after adjusting the magnetic field strength, and the responsiveness of the magnetic field controller after adjusting the magnetic field strength into the formula The sensitivity coefficient θ of the magnetic field controller under the magnetic field strength variable is obtained. γ1, γ2, and γ3 respectively represent the proportional coefficient of the accuracy after the magnetic field controller adjusts the magnetic field strength, the proportional coefficient of the stability after the magnetic field controller adjusts the magnetic field strength, and the proportional coefficient of the responsiveness after the magnetic field controller adjusts the magnetic field strength, γ1+γ2+γ3=1.

Furthermore, the comprehensive sensitivity of the magnetic field controller is analyzed by substituting the sensitivity coefficient of the magnetic field controller under the operating state, the sensitivity coefficient under the environmental variables, and the sensitivity coefficient under the magnetic field strength variable into the formula: The comprehensive sensitivity ω of the magnetic field controller is calculated, and e represents a natural constant.

The beneficial effects of this system are as follows: 1. The present invention analyzes the influence of the magnetic field controller itself under a reference temperature, reference humidity, and reference magnetic field strength, and combines the above-mentioned influence with environmental variable testing and magnetic field strength variable testing to analyze the sensitivity of the magnetic field controller, thereby increasing the accuracy of the sensitivity analysis of the magnetic field controller.

2. The present invention analyzes the power supply noise, mechanical vibration and magnetic field drift of the magnetic field controller under a benchmark operating state. By acquiring the above operating parameters during the operation of the magnetic field controller, the influence of the parameters on the magnetic field controller can be analyzed, so as to facilitate a more accurate experimental analysis of its sensitivity in the future.

3. The present invention adopts a method of separately adjusting the temperature variable and the humidity variable to analyze the sensitivity of the magnetic field controller under the environmental variables, thereby increasing the accuracy and detail of the analysis of the sensitivity of the magnetic field controller to the environment; the present invention further increases the accuracy of the sensitivity coefficient analysis of the magnetic field controller under the temperature variable by adjusting the temperature or humidity higher or lower respectively, and analyzing the impact on the sensitivity of the magnetic field controller.

4. When the present invention conducts a variable test on the magnetic field strength of the magnetic field controller, the response of the magnetic field controller can be reflected by analyzing the magnetic field strength responsiveness, the accuracy of the magnetic field controller can reflect the deviation of the magnetic field strength adjustment of the magnetic field controller, the stability of the magnetic field controller can reflect the fluctuation of the magnetic field after the intensity of the magnetic field controller is adjusted, and the present invention can also perform random adjustment on the magnetic field strength of the magnetic field controller. The above analysis can increase the comprehensiveness and accuracy of the analysis of the magnetic field controller under the magnetic field strength variable.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

FIG. 1 is a flow chart of the method of the present invention.

FIG. 2 is an analysis block diagram of the comprehensive sensitivity of the magnetic field controller of the present invention.

DETAILED DESCRIPTION

The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in the art or the product specifications are used.

Referring to FIG. 1 , a method for analyzing and evaluating the control sensitivity simulation experiment of a magnetic field controller includes the following steps: (1) Setting the reference state of the magnetic field controller: obtaining the recommended temperature and humidity of the magnetic field controller stored in the sensitivity test database, and obtaining the rated magnetic field strength of the magnetic field controller, adjusting the ambient temperature and humidity of the test site to the recommended temperature and humidity of the magnetic field controller, and using the recommended temperature, recommended humidity and rated magnetic field strength of the magnetic field controller as the reference temperature, reference humidity and reference magnetic field strength of the magnetic field controller respectively. The present invention uses the sensitivity test database for analyzing the control sensitivity simulation experiment of the controller, and the sensitivity test database is used to store various standard data of the magnetic field controller; the present invention adjusts the test site to the recommended temperature and humidity, thereby facilitating the sensitivity simulation test of the magnetic field controller under different variable conditions in sequence, thereby increasing the comprehensiveness of the magnetic field controller test.

(2) Magnetic field controller operation test: obtain the operating parameters of the magnetic field controller under the conditions of reference temperature, reference humidity, and reference magnetic field strength, and analyze the sensitivity coefficient of the magnetic field controller under the operating conditions through the operating parameters of the magnetic field controller, which is recorded as λ; the operating parameters include power supply noise, mechanical vibration, and magnetic field drift. There are problems such as power supply noise, mechanical vibration, and magnetic field drift during the operation of the magnetic field controller. By obtaining the above operating parameters during the operation of the magnetic field controller, it is possible to analyze the impact of the above defects on the magnetic field controller, which is convenient for subsequent more accurate experimental analysis of its sensitivity.

The steps of the sensitivity coefficient of the magnetic field controller in the operating state are as follows: (21) The decibel value of the power supply noise during the operation of the magnetic field controller is monitored, and the analytical formula is: The power supply noise is calculated and recorded as λ1. The power supply noise will affect the magnetic field strength of the magnetic field controller. Therefore, by analyzing the power supply noise, the influence of the power supply noise can be brought into the analysis of the sensitivity of the magnetic field controller, thereby increasing the accuracy of the sensitivity analysis of the magnetic field controller.

(22) The mechanical vibration generated during the operation of the magnetic field controller is monitored, and the vibration amplitudes of each time during the operation of the magnetic field controller are superimposed and the average vibration amplitude during the operation of the magnetic field controller is obtained by average calculation, which is recorded as the average vibration amplitude of the magnetic field controller. The analytical formula is: The mechanical vibration degree is calculated and recorded as λ2. Similarly, the mechanical vibration of the magnetic field controller will also affect its magnetic field strength.

(23) The magnetic field generated by the magnetic field controller is monitored and the area covered by the magnetic field is obtained by analysis. The standard coverage area _Sb is read from the sensitivity test database during the operation of the magnetic field controller, and the area of the overlapped area between the two is recorded as the overlapped area _Spiao . The analytical formula is: The magnetic field drift is calculated and recorded as λ3. The magnetic field drift is used to reflect the deviation of the coverage of the magnetic field, thereby increasing the accuracy of the subsequent magnetic field sensitivity analysis of the magnetic field controller.

(24) By reading the power supply noise, mechanical vibration, and magnetic field drift of the magnetic field controller, they are substituted into the analytical formula: The sensitivity coefficient λ of the magnetic field controller under the operating state is calculated, and e represents a natural constant. The above steps can analyze the influence of the magnetic field controller under the standard operating state. The present invention can accurately reflect the influence of the magnetic field controller on the magnetic field control sensitivity through the above parameters.

(3) Environmental variable test: By changing the temperature and humidity of the test site environment and monitoring the magnetic field strength and magnetic field stability of the magnetic field controller, the sensitivity coefficient of the magnetic field controller under environmental variables is obtained, which is recorded as β.

The magnetic field stability of the magnetic field controller includes the rate of change of magnetic field intensity and the rate of deviation of magnetic field direction; the sensitivity coefficient of the magnetic field controller under environmental variables includes the sensitivity coefficient under temperature variables of the magnetic field controller and the sensitivity coefficient under humidity variables of the magnetic field controller. Changes in the ambient temperature and humidity of the test site will affect the sensitivity of the magnetic field controller. The present invention analyzes the sensitivity of the magnetic field controller under environmental variables by adjusting the temperature variable and the humidity variable separately, thereby increasing the accuracy and meticulousness of the sensitivity analysis of the magnetic field controller under the environment.

The sensitivity coefficient of the magnetic field controller under the temperature variable is analyzed as follows: (31) The temperature of the test site is raised by the same amount for multiple times, and the magnetic field strength and magnetic field direction deviation angle of the magnetic field controller are monitored at each preset time point when the temperature of the test site is raised each time, and they are recorded as α _i ^j , θ _i ^j , respectively, i represents the i-th increase in the temperature of the test site, i=1,2,...,k, j represents the j-th preset time point, j=1,2,...,m. The present invention further increases the accuracy of the sensitivity coefficient analysis of the magnetic field controller under the temperature variable by analyzing the influence of temperature increase and decrease on the sensitivity of the magnetic field controller.

It should be noted that the above-mentioned multiple equal increases in the temperature of the test site are determined according to the working environment of the magnetic field controller. For example, in a poorly ventilated environment, the highest test temperature is 75 degrees Celsius.

(32) The maximum magnetic field intensity and the minimum magnetic field intensity of the magnetic field controller at each test site temperature adjustment are selected and recorded as α _i ^max and α _i ^min respectively. The analytical formula is: The magnetic field intensity change rate αx _i of the magnetic field controller at each increase in the test site temperature is obtained, where α _standard represents the reference magnetic field intensity of the magnetic field controller, m represents the number of preset time points, and ε represents the correction coefficient of the deviation between the maximum magnetic field intensity and the minimum magnetic field intensity of the magnetic field controller. For example, ε is 3.6. When analyzing the sensitivity coefficient of the magnetic field controller under environmental variables, the present invention not only analyzes its average magnetic field intensity, but also comprehensively calculates it by analyzing the maximum magnetic field intensity and the minimum magnetic field intensity of the magnetic field controller, thereby increasing the objectivity and comprehensiveness of the sensitivity coefficient under the environmental variables of the magnetic field controller.

(33) Through analytical formula The magnetic field direction deviation rate _θxi of the magnetic field controller at each test site temperature increase is obtained. The magnetic field deviation rate refers to the angle change between the magnetic field generated by the magnetic field controller and its standard magnetic field direction.

(34) Similarly, the magnetic field intensity change rate of the magnetic field controller at each lowering of the test site temperature and the magnetic field direction deviation rate of the magnetic field controller at each lowering of the test site temperature are analyzed and recorded as αx' _i θx' _i respectively, and the formula is used The sensitivity coefficient β1 of the magnetic field controller under the temperature variable is calculated, e represents a natural constant, ε1, ε2, ε3, and ε4 represent the correction coefficient of the magnetic field intensity change rate of the magnetic field controller at the increased test site temperature, the correction coefficient of the magnetic field intensity change rate of the magnetic field controller at the decreased test site temperature, the correction coefficient of the magnetic field direction deviation rate of the magnetic field controller at the increased test site temperature, and the correction coefficient of the magnetic field direction deviation rate of the magnetic field controller at the decreased test site temperature, respectively. For example, ε1, ε2, ε3, and ε4 are 0.35, 0.25, 0.25, and 0.15, respectively. The operation mode of lowering and raising the working environment is the same. For example, the lowest test temperature of the magnetic field controller is -10 degrees Celsius.

The analysis method of the sensitivity coefficient of the magnetic field controller under the humidity variable is the same as that of the magnetic field controller under the temperature variable, which will not be described in detail here. The sensitivity coefficient β2 of the magnetic field controller under the humidity variable is obtained by analysis. The sensitivity coefficient of the magnetic field controller under the humidity variable is analyzed by increasing the humidity and decreasing the humidity to increase the accuracy of the analysis.

The sensitivity coefficient of the magnetic field controller under the environmental variable is analyzed by substituting the sensitivity coefficient of the magnetic field controller under the temperature variable and the sensitivity coefficient of the magnetic field controller under the humidity variable into the formula: Then the sensitivity coefficient β of the magnetic field controller under the environmental variables is obtained.

(4) Magnetic field strength variable test: By changing the magnetic field strength of the magnetic field controller, the magnetic field strength responsiveness, accuracy and stability of the magnetic field controller are monitored and analyzed, and then the sensitivity coefficient of the magnetic field controller under the magnetic field strength variable is obtained. The magnetic field strength responsiveness of the magnetic field controller can reflect the response of the magnetic field controller, the accuracy of the magnetic field controller can reflect the deviation of the magnetic field strength adjustment of the magnetic field controller, and the stability of the magnetic field controller can reflect the fluctuation of the magnetic field after the magnetic field controller strength is adjusted. Through the above analysis, the comprehensiveness and accuracy of the analysis of the magnetic field controller under the magnetic field strength variable can be increased.

The analysis method for monitoring and analyzing the magnetic field intensity responsiveness, accuracy and stability of the magnetic field controller is as follows: (41) the magnetic field intensity of the magnetic field controller is adjusted multiple times, and the magnetic field intensity reaction time after each magnetic field intensity adjustment by the magnetic field controller is recorded as T _h , and the magnetic field intensity value after each magnetic field intensity adjustment by the magnetic field controller is recorded as α ^adjustment _h , where h represents the number of the hth magnetic field intensity adjustment of the magnetic field controller, h = 1, 2, ..., n. It can be understood that the magnetic field intensity after each adjustment of the magnetic field controller can be randomly adjusted or adjusted in equal amounts.

(42) After each magnetic field controller adjusts the magnetic field strength, it monitors the current magnetic field strength at each set time point, which is recorded as α1 _h ^p , where p represents the pth set time point, p = 1, 2, ..., q, and is analyzed by the formula: The accuracy θ1 _h after each magnetic field controller adjusts the magnetic field strength is obtained, where q represents the number of set time points.

(43) After each magnetic field controller adjusts the magnetic field strength, the maximum and minimum values of the current magnetic field strength at each set time point are screened, and the following analysis is performed: The stability θ2 _h after each magnetic field controller performs magnetic field intensity adjustment is obtained. α1 _h ^max and α1 _h ^min respectively represent the maximum value and the minimum value of the current magnetic field intensity after the h-th magnetic field controller performs magnetic field intensity adjustment.

(44) Through analytical formula: The reaction degree θ3 _h after each magnetic field controller adjusts the magnetic field strength is obtained, _Th ^recommended represents the standard reaction time of the magnetic field strength after the h-th magnetic field controller adjusts the magnetic field strength, _Th ^recommended represents the reference time for the h-th magnetic field controller to adjust the magnetic field strength, the above values are stored in the sensitivity test database, and because the values of the magnetic field strength adjustment of the magnetic field controller each time will have deviations, the corresponding reference time of the magnetic field strength adjustment will be different.

The analysis method of the sensitivity coefficient of the magnetic field controller under the magnetic field strength variable is: substitute the accuracy of the magnetic field controller after adjusting the magnetic field strength, the stability of the magnetic field controller after adjusting the magnetic field strength, and the responsiveness of the magnetic field controller after adjusting the magnetic field strength into the formula The sensitivity coefficient θ of the magnetic field controller under the magnetic field strength variable is obtained, γ1, γ2, and γ3 respectively represent the proportional coefficient of the accuracy after the magnetic field controller adjusts the magnetic field strength, the proportional coefficient of the stability after the magnetic field controller adjusts the magnetic field strength, and the proportional coefficient of the responsiveness after the magnetic field controller adjusts the magnetic field strength, γ1+γ2+γ3=1. The present invention adjusts the magnetic field strength of the magnetic field controller multiple times, and each time after the magnetic field strength of the magnetic field controller is adjusted, the adjusted magnetic field strength is monitored at multiple set time points. The above monitoring method can increase the accuracy of the magnetic field controller under the magnetic field strength variable test.

(5) Comprehensive sensitivity analysis of magnetic field controller control: The comprehensive sensitivity of the magnetic field controller is obtained by summarizing and analyzing the sensitivity coefficient of the magnetic field controller under the operating state, the sensitivity coefficient under environmental variables, and the sensitivity coefficient under magnetic field strength variables.

Referring to FIG. 2 , the comprehensive sensitivity of the magnetic field controller is analyzed by substituting the sensitivity coefficient of the magnetic field controller under the operating state, the sensitivity coefficient under the environmental variables, and the sensitivity coefficient under the magnetic field strength variables into the formula: The comprehensive sensitivity ω of the magnetic field controller is calculated, and e represents a natural constant. The present invention analyzes the influence of the magnetic field controller itself under the reference temperature, reference humidity, and reference magnetic field strength, and combines the above influence with the environmental variable test and the magnetic field strength variable test to analyze the sensitivity of the magnetic field controller, thereby increasing the accuracy of the sensitivity analysis of the magnetic field controller.

Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention and they are still within the scope of protection of the present invention.

Claims (9)

1. A method for analyzing and evaluating the control sensitivity of a magnetic field controller by simulation experiment, characterized in that it comprises the following steps: (1) Setting the reference state of the magnetic field controller: Obtain the recommended temperature and humidity of the magnetic field controller stored in the sensitivity test database, and obtain the rated magnetic field strength of the magnetic field controller, adjust the ambient temperature and humidity of the test site to the recommended temperature and humidity of the magnetic field controller, and use the recommended temperature, recommended humidity and rated magnetic field strength of the magnetic field controller as the reference temperature, reference humidity and reference magnetic field strength of the magnetic field controller respectively; (2) Magnetic field controller operation test: obtain the operating parameters of the magnetic field controller under the reference temperature, reference humidity, and reference magnetic field strength conditions, and analyze the sensitivity coefficient of the magnetic field controller under the operating conditions through the operating parameters of the magnetic field controller, which is recorded as λ; the operating parameters include power supply noise, mechanical vibration, and magnetic field drift; (3) Environmental variable test: By changing the temperature and humidity of the test site environment and monitoring the magnetic field strength and magnetic field stability of the magnetic field controller, the sensitivity coefficient of the magnetic field controller under environmental variables is obtained, which is recorded as β; (4) Magnetic field strength variable test: By changing the magnetic field strength of the magnetic field controller, the magnetic field strength responsiveness, accuracy and stability of the magnetic field controller are monitored and analyzed, and then the sensitivity coefficient of the magnetic field controller under the magnetic field strength variable is obtained; (5) Comprehensive sensitivity analysis of magnetic field controller control: The comprehensive sensitivity of the magnetic field controller is obtained by summarizing and analyzing the sensitivity coefficient of the magnetic field controller under the operating state, the sensitivity coefficient under environmental variables, and the sensitivity coefficient under magnetic field strength variables. 2. According to claim 1, a magnetic field controller control sensitivity simulation experiment analysis and evaluation method is characterized in that the steps of the sensitivity coefficient of the magnetic field controller in the operating state are as follows: (21) The decibel value of the power supply noise during the operation of the magnetic field controller is monitored by the analytical formula: The power supply noise is calculated and recorded as λ1; (22) The mechanical vibration generated during the operation of the magnetic field controller is monitored, and the vibration amplitudes of each time during the operation of the magnetic field controller are superimposed and the average vibration amplitude during the operation of the magnetic field controller is obtained by average calculation, which is recorded as the average vibration amplitude of the magnetic field controller. The analytical formula is: The mechanical vibration degree is calculated and recorded as λ2; (23) The magnetic field generated by the magnetic field controller is monitored and the area covered by the magnetic field is obtained by analysis. The standard coverage area _Sb is read from the sensitivity test database during the operation of the magnetic field controller, and the area of the overlapped area between the two is recorded as the overlapped area _Spiao . The analytical formula is: The magnetic field drift is calculated and recorded as λ3; (24) By reading the power supply noise, mechanical vibration, and magnetic field drift of the magnetic field controller, they are substituted into the analytical formula: The sensitivity coefficient λ of the magnetic field controller in the operating state is calculated, and e represents a natural constant. 3. According to the simulation experiment analysis and evaluation method of the control sensitivity of a magnetic field controller described in claim 1, it is characterized in that the magnetic field stability of the magnetic field controller includes the magnetic field intensity change rate and the magnetic field direction deviation rate; the sensitivity coefficient of the magnetic field controller under the environmental variables includes the sensitivity coefficient of the magnetic field controller under the temperature variable and the sensitivity coefficient of the magnetic field controller under the humidity variable. 4. According to claim 3, a magnetic field controller control sensitivity simulation experiment analysis and evaluation method is characterized in that the sensitivity coefficient of the magnetic field controller under temperature variables is analyzed in the following manner: (31) The temperature of the test site is raised by multiple equal amounts, and the magnetic field strength and magnetic field direction deviation angle of the magnetic field controller are monitored at each preset time point when the temperature of the test site is raised each time, and they are recorded as α _i ^j , θ _i ^j , respectively, where i represents the i-th time the temperature of the test site is raised, i=1,2,…,k, and j represents the j-th preset time point, j=1,2,…,m; (32) The maximum magnetic field intensity and the minimum magnetic field intensity of the magnetic field controller at each test site temperature adjustment are selected and recorded as α _i ^max and α _i ^min respectively. The analytical formula is: The magnetic field intensity change rate αx _i of the magnetic field controller at each increase in the test site temperature is obtained, where α _standard represents the reference magnetic field intensity of the magnetic field controller, m represents the number of preset time points, and ε represents the correction coefficient of the deviation between the maximum magnetic field intensity and the minimum magnetic field intensity of the magnetic field controller; (33) Through analytical formula Obtain the magnetic field direction deviation rate _θxi of the magnetic field controller at each increase in the test site temperature; (34) Similarly, the magnetic field intensity change rate of the magnetic field controller at each lowering of the test site temperature and the magnetic field direction deviation rate of the magnetic field controller at each lowering of the test site temperature are analyzed and recorded as αx' _i θx' _i respectively, and the formula is used The sensitivity coefficient β1 of the magnetic field controller under temperature variable is calculated, e represents a natural constant, ε1, ε2, ε3, and ε4 represent the correction coefficient of the magnetic field intensity change rate of the magnetic field controller when the test site temperature is increased, the correction coefficient of the magnetic field intensity change rate of the magnetic field controller when the test site temperature is decreased, the correction coefficient of the magnetic field direction offset rate of the magnetic field controller when the test site temperature is increased, and the correction coefficient of the magnetic field direction offset rate of the magnetic field controller when the test site temperature is decreased, respectively. 5. According to claim 4, a magnetic field controller control sensitivity simulation experiment analysis and evaluation method is characterized in that the analysis method of the sensitivity coefficient of the magnetic field controller under the humidity variable is the same as the analysis method of the sensitivity coefficient of the magnetic field controller under the temperature variable, and then the sensitivity coefficient β2 of the magnetic field controller under the humidity variable is obtained by analysis. 6. According to claim 5, a magnetic field controller control sensitivity simulation experiment analysis and evaluation method is characterized in that the sensitivity coefficient of the magnetic field controller under the environmental variable is analyzed by substituting the sensitivity coefficient of the magnetic field controller under the temperature variable and the sensitivity coefficient of the magnetic field controller under the humidity variable into the formula: Then the sensitivity coefficient β of the magnetic field controller under the environmental variables is obtained. 7. According to claim 1, a magnetic field controller control sensitivity simulation experiment analysis and evaluation method is characterized in that the analysis method for monitoring and analyzing the magnetic field intensity responsiveness, accuracy and stability of the magnetic field controller is: (41) The magnetic field strength of the magnetic field controller is adjusted multiple times, and the magnetic field strength reaction time after each magnetic field strength adjustment by the magnetic field controller is recorded as T _h , and the magnetic field strength value after each magnetic field strength adjustment by the magnetic field controller is recorded as α ^adjustment _h , where h represents the number of the hth magnetic field strength adjustment of the magnetic field controller, and h=1, 2, ..., n; (42) After each magnetic field controller adjusts the magnetic field strength, it monitors the current magnetic field strength at each set time point, which is recorded as α1 _h ^p , where p represents the pth set time point, p = 1, 2, …, q, and is analyzed by the formula: Get the accuracy of each magnetic field controller after adjusting the magnetic field strength q represents the number of set time points; (43) After each magnetic field controller adjusts the magnetic field strength, the maximum and minimum values of the current magnetic field strength at each set time point are screened, and the following analysis is performed: Get the stability of each magnetic field controller after adjusting the magnetic field strength α1 _h ^max and α1 _h ^min respectively represent the maximum and minimum values of the current magnetic field intensity after the magnetic field controller adjusts the magnetic field intensity for the hth time; (44) Through analytical formula: Get the reaction degree after each magnetic field controller adjusts the magnetic field strength T _h ^recommended represents the standard response time of the magnetic field strength after the magnetic field controller performs magnetic field strength adjustment for the hth time. 8. According to the method for analyzing and evaluating the sensitivity of a magnetic field controller according to claim 7, the sensitivity coefficient of the magnetic field controller under the magnetic field strength variable is analyzed by substituting the accuracy of the magnetic field controller after adjusting the magnetic field strength, the stability of the magnetic field controller after adjusting the magnetic field strength, and the responsiveness of the magnetic field controller after adjusting the magnetic field strength into the formula Get the sensitivity coefficient of the magnetic field controller under the magnetic field strength variable γ1, γ2, and γ3 respectively represent the proportional coefficient of accuracy after the magnetic field controller adjusts the magnetic field strength, the proportional coefficient of stability after the magnetic field controller adjusts the magnetic field strength, and the proportional coefficient of responsiveness after the magnetic field controller adjusts the magnetic field strength, γ1+γ2+γ3=1. 9. A method for analyzing and evaluating the control sensitivity of a magnetic field controller according to claim 8, characterized in that the comprehensive sensitivity of the magnetic field controller is analyzed by substituting the sensitivity coefficient of the magnetic field controller under the operating state, the sensitivity coefficient under the environmental variables, and the sensitivity coefficient under the magnetic field intensity variables into the formula: The comprehensive sensitivity ω of the magnetic field controller is calculated, and e represents a natural constant.