CN105003341B - A kind of engine oil flow regulating control system and control method - Google Patents
A kind of engine oil flow regulating control system and control method Download PDFInfo
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Abstract
本发明涉及飞机燃油系统结冰试验技术领域，具体涉及一种发动机供油流量调节控制系统及控制方法，以解决目前的供油流量模拟系统中，试验设备结构复杂、局限性大的问题。控制系统可以包括伺服缸、流量计、PID控制器，通过PID控制器控制伺服缸来对流量调节阀进行调节，使得试验设备结构简单，适应性更强；另外，还通过燃油系统回路中流量信息和伺服缸活塞杆的位置信息来对伺服缸进行闭环控制，使得流量调节更方便快捷且更准确。
The invention relates to the technical field of aircraft fuel system icing tests, in particular to an engine fuel supply flow regulation control system and control method to solve the problems of complex structure and large limitations of test equipment in the current fuel supply flow simulation system. The control system can include a servo cylinder, a flow meter, and a PID controller. The flow regulating valve is adjusted by controlling the servo cylinder through the PID controller, which makes the test equipment simple in structure and more adaptable; in addition, the flow information in the fuel system circuit is also used to The closed-loop control of the servo cylinder is carried out with the position information of the piston rod of the servo cylinder, which makes the flow adjustment more convenient, faster and more accurate.
Description
技术领域technical field
本发明涉及飞机燃油系统结冰试验技术领域，具体涉及一种发动机供油流量调节控制系统及控制方法。The invention relates to the technical field of aircraft fuel system icing tests, in particular to an engine fuel supply flow regulation control system and control method.
背景技术Background technique
飞机燃油系统任务是给发动机提供持续的满足压力要求的燃油；在试验室，燃油系统试验需要模拟发动机的耗油量变化，燃油系统在油箱内配有供油泵，燃油通过供油管路输送到发动机低压泵；而发动机供油流量模拟系统就是用于控制燃油系统中燃油流量的变化，从而模拟发动机低压泵入口处的压力流量变化。The task of the aircraft fuel system is to provide the engine with continuous fuel that meets the pressure requirements; in the laboratory, the fuel system test needs to simulate the fuel consumption change of the engine. The fuel system is equipped with a fuel pump in the fuel tank, and the fuel is delivered to the Engine low-pressure pump; the engine fuel supply flow simulation system is used to control the change of fuel flow in the fuel system, thereby simulating the pressure flow change at the inlet of the engine low-pressure pump.
原有的供油流量模拟系统使用电液伺服阀带动流量调节阀，从而达到对发动机供油流量变化的模拟，必须有电液伺服阀以及相应的动力液压源，最终使得试验设备结构复杂、局限性大。The original oil supply flow simulation system uses the electro-hydraulic servo valve to drive the flow regulating valve to simulate the change of the engine oil supply flow. It must have an electro-hydraulic servo valve and a corresponding power hydraulic source, which ultimately makes the structure of the test equipment complex and limited. big sex.
发明内容Contents of the invention
本发明的目的是提供一种发动机供油流量调节控制系统及控制方法，以解决目前的供油流量模拟系统中，试验设备结构复杂、局限性大的问题。The object of the present invention is to provide an engine fuel supply flow regulation control system and control method to solve the problems of complex structure and large limitations of test equipment in the current fuel supply flow simulation system.
本发明的技术方案是：Technical scheme of the present invention is:
一种发动机供油流量调节控制系统，包括：An engine oil supply flow regulation control system, comprising:
伺服缸，其活塞杆与燃油系统回路中的流量调节阀连接，用于控制所述流量调节阀的开度，还用于生成所述伺服缸活塞杆的位置信号；The servo cylinder, the piston rod of which is connected to the flow regulating valve in the fuel system circuit, is used to control the opening of the flow regulating valve, and is also used to generate the position signal of the servo cylinder piston rod;
流量计，设置在所述燃油系统回路中，用于检测得到流过所述流量调节阀的实际流量值；A flow meter, arranged in the fuel system circuit, is used to detect and obtain the actual flow value flowing through the flow regulating valve;
PID控制器，用于将试验所需的期望流量值信号转化成用于控制所述伺服缸活塞杆伸缩的作动信号，以驱动所述流量调节阀开启一个与所述期望流量值相对应的开度；The PID controller is used to convert the expected flow value signal required for the test into an actuation signal for controlling the expansion and contraction of the servo cylinder piston rod, so as to drive the flow regulating valve to open a valve corresponding to the expected flow value. opening;
所述PID控制器还用于判断所述实际流量值与所述期望流量值是否相等，并在所述实际流量值与所述期望流量值不相等时，根据所述伺服缸活塞杆的位置信号和所述流量调节阀的实际流量值信号，来控制所述伺服缸驱动所述流量调节阀，以使得所述实际流量值等于所述期望流量值；The PID controller is also used to judge whether the actual flow value is equal to the expected flow value, and when the actual flow value is not equal to the expected flow value, according to the position signal of the servo cylinder piston rod and the actual flow value signal of the flow regulating valve to control the servo cylinder to drive the flow regulating valve so that the actual flow value is equal to the expected flow value;
连接机构，所述连接机构进一步地包括：The connection mechanism, the connection mechanism further includes:
连接架，所述伺服缸的本体固定设置在所述连接架的顶部，所述流量调节阀的本体固定设置在所述连接架的底部，且位于所述伺服缸的本体的竖直下方，另外，所述伺服缸的活塞杆的轴线与所述流量调节阀的阀杆的轴线重合；A connecting frame, the body of the servo cylinder is fixedly arranged on the top of the connecting frame, the body of the flow regulating valve is fixedly arranged on the bottom of the connecting frame, and is located vertically below the body of the servo cylinder, and in addition , the axis of the piston rod of the servo cylinder coincides with the axis of the valve rod of the flow regulating valve;
连接件，一端与所述伺服缸的活塞杆端部固定连接，另一端与所述流量调节阀的阀杆的端部固定连接。One end of the connecting piece is fixedly connected to the end of the piston rod of the servo cylinder, and the other end is fixedly connected to the end of the valve rod of the flow regulating valve.
可选地，所述燃油系统包括发动机、试验油箱、散热器以及所述流量调节阀，所述试验油箱的出油端口和回油端口分别通过管路连接至所述发动机，所述散热器设置在所述试验油箱的出油端口与所述发动机之间，所述流量调节阀设置在所述试验油箱的回油端口与所述发动机之间。Optionally, the fuel system includes an engine, a test oil tank, a radiator and the flow regulating valve, the oil outlet port and the oil return port of the test oil tank are respectively connected to the engine through pipelines, and the radiator is set Between the oil outlet port of the test oil tank and the engine, the flow regulating valve is arranged between the oil return port of the test oil tank and the engine.
本发明还提供了一种根据上述任一项所述发动机供油流量调节控制系统的控制方法，包括如下步骤：The present invention also provides a control method of the engine oil supply flow regulation control system according to any one of the above, including the following steps:
步骤一、所述PID控制器将试验所需的期望流量值信号转化成用于控制伺服缸活塞杆伸缩的作动信号；Step 1. The PID controller converts the expected flow value signal required for the test into an actuation signal for controlling the expansion and contraction of the servo cylinder piston rod;
步骤二、所述伺服缸活塞杆根据所述作动信号进行伸缩，以驱动所述流量调节阀开启一个与所述期望流量值相对应的开度；Step 2, the piston rod of the servo cylinder expands and contracts according to the actuation signal, so as to drive the flow regulating valve to open an opening corresponding to the expected flow value;
步骤三、所述流量计检测得到流过所述流量调节阀的实际流量值，并将所述实际流量值传递至所述PID控制器；Step 3, the flow meter detects the actual flow value flowing through the flow regulating valve, and transmits the actual flow value to the PID controller;
同时，所述伺服缸将所述活塞杆的位置信号传递至所述PID控制器；At the same time, the servo cylinder transmits the position signal of the piston rod to the PID controller;
步骤四、所述PID控制器判断所述实际流量值与所述期望流量值是否相等，相等时进行步骤五；否则，进行步骤六；Step 4, the PID controller judges whether the actual flow value is equal to the expected flow value, and if they are equal, proceed to step 5; otherwise, proceed to step 6;
步骤五、保持所述伺服缸的活塞杆处于步骤二中的位置；Step five, keeping the piston rod of the servo cylinder at the position in step two;
步骤六、所述PID控制器根据所述伺服缸活塞杆的位置信号和所述流量调节阀的实际流量值信号，来控制所述伺服缸活塞杆驱动所述流量调节阀，以使得所述实际流量值等于所述期望流量值。Step 6. The PID controller controls the piston rod of the servo cylinder to drive the flow regulating valve according to the position signal of the piston rod of the servo cylinder and the actual flow value signal of the flow regulating valve, so that the actual The flow value is equal to the desired flow value.
本发明的有益效果：Beneficial effects of the present invention:
本发明的发动机供油流量调节控制系统及控制方法中，通过伺服缸来对流量调节阀进行调节，使得试验设备结构简单，适应性更强；另外，还通过燃油系统回路中流量信息和伺服缸活塞杆的位置信息来对伺服缸进行闭环控制，使得流量调节更方便快捷且更准确。In the engine oil supply flow adjustment control system and control method of the present invention, the flow control valve is adjusted through the servo cylinder, so that the test equipment has a simple structure and stronger adaptability; in addition, the flow information in the fuel system loop and the servo cylinder The position information of the piston rod is used to perform closed-loop control on the servo cylinder, which makes the flow adjustment more convenient, faster and more accurate.
附图说明Description of drawings
图1是本发明发动机供油流量调节控制系统的结构示意图；Fig. 1 is a schematic structural view of the engine oil supply flow regulation control system of the present invention;
图2是本发明连接架的结构示意图；Fig. 2 is the structural representation of connecting frame of the present invention;
图3是本发明连接件的结构示意图。Fig. 3 is a structural schematic diagram of the connector of the present invention.
具体实施方式detailed description
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated.
如图1和图3所示，本发明提供的一种发动机供油流量调节控制系统，用于对飞机燃油系统结冰试验的燃油系统回路中的流量调节阀进行控制。控制系统可以包括伺服缸2、流量计41、PID控制器1等。As shown in Fig. 1 and Fig. 3, the present invention provides an engine fuel supply flow regulating control system, which is used to control the flow regulating valve in the fuel system loop of the aircraft fuel system icing test. The control system may include a servo cylinder 2, a flow meter 41, a PID controller 1, and the like.
伺服缸2可以采用多种已知的伺服缸，其包括的活塞杆与燃油系统回路中的流量调节阀4连接，用于控制流量调节阀4的开度。其中，活塞杆是与流量调节阀4的阀杆连接，可以采用多种适合的连接方式，本实施例中，是通过连接机构3进行连接。伺服缸2中自带的位置反馈功能，能够生成活塞杆的位置信号，并将位置信号传递至PID控制器1。The servo cylinder 2 can adopt various known servo cylinders, the piston rod of which is connected with the flow regulating valve 4 in the fuel system circuit, and is used to control the opening of the flow regulating valve 4 . Wherein, the piston rod is connected with the valve rod of the flow regulating valve 4 , and various suitable connection methods can be adopted. In this embodiment, the connection is made through the connection mechanism 3 . The built-in position feedback function of the servo cylinder 2 can generate a position signal of the piston rod and transmit the position signal to the PID controller 1 .
具体地，连接机构3包括连接架31和连接件32。连接架31可以采用多种适合的结构，例如矩形框架、圆柱形框架等；本实施例中，如图2所示，采用矩形框架，包括四根支撑圆柱和上下底板，且上下底板上开设有圆孔；伺服缸2的本体固定设置在连接架31的顶部(上底板的上表面)；流量调节阀4的本体固定设置在连接架31的底部(下底板的下表面)，且位于伺服缸2的本体的竖直下方。进一步，伺服缸2的活塞杆的一端穿过上底板的孔伸入连接架31内部，流量调节阀4的阀杆的一端穿过下底板的孔伸入连接架31内部，并与上述活塞杆的一端通过连接件32固定连接，并且伺服缸2的活塞杆的轴线与流量调节阀4的阀杆的轴线重合。连接件32同样可以为多种适合的结构，不再赘述。Specifically, the connecting mechanism 3 includes a connecting frame 31 and a connecting piece 32 . The connecting frame 31 can adopt various suitable structures, such as a rectangular frame, a cylindrical frame, etc.; Round hole; the body of the servo cylinder 2 is fixedly arranged on the top of the connecting frame 31 (the upper surface of the upper bottom plate); the body of the flow regulating valve 4 is fixedly arranged on the bottom of the connecting frame 31 (the lower surface of the lower bottom plate), and is located in the servo cylinder 2 vertically below the body. Further, one end of the piston rod of the servo cylinder 2 passes through the hole of the upper base plate and extends into the inside of the connecting frame 31, and one end of the valve rod of the flow regulating valve 4 passes through the hole of the lower base plate and extends into the inside of the connecting frame 31, and is connected with the above-mentioned piston rod. One end of the cylinder is fixedly connected by a connecting piece 32, and the axis of the piston rod of the servo cylinder 2 coincides with the axis of the valve rod of the flow regulating valve 4. The connecting member 32 can also be of various suitable structures, which will not be repeated here.
流量计41可以采用多种已知的流量计，设置在燃油系统回路中，用于检测得到流过流量调节阀4的实际流量值，并将实际流量值信号传递至PID控制器1。The flowmeter 41 can adopt various known flowmeters and is set in the fuel system circuit for detecting the actual flow value passing through the flow regulating valve 4 and transmitting the actual flow value signal to the PID controller 1 .
PID控制器1同样可以采用多种适合的PID控制器，用于将试验所需的期望流量值信号转化成用于控制伺服缸2活塞杆伸缩的作动信号，以驱动流量调节阀4开启一个与期望流量值相对应的开度。另外，PID控制器1还可以具有流量输入端(未示出)，用于输入试验所需的期望流量值。PID controller 1 can also adopt a variety of suitable PID controllers to convert the expected flow value signal required for the test into an actuation signal for controlling the expansion and contraction of the piston rod of the servo cylinder 2, so as to drive the flow regulating valve 4 to open a The opening corresponding to the desired flow value. In addition, the PID controller 1 may also have a flow input terminal (not shown), which is used to input the expected flow value required by the test.
进一步，PID控制器1还用于判断实际流量值与期望流量值是否相等，并在实际流量值与期望流量值不相等时，根据伺服缸2活塞杆的位置信号和流量调节阀4的实际流量值信号，来控制伺服缸2驱动流量调节阀4，以使得实际流量值等于期望流量值。其中，基于PID控制器的闭环控制系统技术已经非常成熟，此处不再赘述。Further, the PID controller 1 is also used to judge whether the actual flow value is equal to the expected flow value, and when the actual flow value is not equal to the expected flow value, according to the position signal of the piston rod of the servo cylinder 2 and the actual flow rate of the flow regulating valve 4 value signal to control the servo cylinder 2 to drive the flow regulating valve 4 so that the actual flow value is equal to the expected flow value. Among them, the technology of the closed-loop control system based on the PID controller is very mature and will not be repeated here.
本发明的发动机供油流量调节控制系统中，通过伺服缸2来对流量调节阀4进行调节，使得试验设备结构简单，适应性更强。另外，本发明还能够通过燃油系统回路中流量计41测得到的流量信息和活塞杆的位置信息来对伺服缸进行闭环控制，使得流量调节更方便快捷且更准确。In the engine oil supply flow regulating control system of the present invention, the flow regulating valve 4 is adjusted through the servo cylinder 2, so that the test equipment has a simple structure and stronger adaptability. In addition, the present invention can also perform closed-loop control on the servo cylinder through the flow information measured by the flow meter 41 in the fuel system circuit and the position information of the piston rod, so that the flow adjustment is more convenient, faster and more accurate.
本发明的燃油系统包括发动机7、试验油箱5、散热器6以及所述流量调节阀4，所述试验油箱5(内设置有油泵)的出油端口和回油端口分别通过管路连接至所述发动机7，所述散热器6设置在所述试验油箱5的出油端口与所述发动机7之间，所述流量调节阀4设置在所述试验油箱5的回油端口与所述发动机7之间。其中，结冰试验需要考核燃油系统是否能够在低温工况下达到设计要求的流量、压力，因此，在供油回路增加散热器6给燃油降温。The fuel system of the present invention comprises an engine 7, a test oil tank 5, a radiator 6 and the flow regulating valve 4, and the oil outlet port and the oil return port of the test oil tank 5 (which is provided with an oil pump) are respectively connected to the The engine 7, the radiator 6 is arranged between the oil outlet port of the test oil tank 5 and the engine 7, and the flow regulating valve 4 is arranged between the oil return port of the test oil tank 5 and the engine 7 between. Among them, the icing test needs to check whether the fuel system can reach the flow rate and pressure required by the design under low temperature conditions. Therefore, a radiator 6 is added to the fuel supply circuit to cool down the fuel.
本发明还提供了一种发动机供油流量调节控制系统的控制方法，包括如下步骤：The present invention also provides a control method of the engine oil supply flow regulation control system, comprising the following steps:
步骤一、所述PID控制器1将试验所需的期望流量值信号转化成用于控制伺服缸2活塞杆伸缩的作动信号。Step 1. The PID controller 1 converts the expected flow value signal required for the test into an actuation signal for controlling the expansion and contraction of the piston rod of the servo cylinder 2 .
步骤二、所述伺服缸2活塞杆根据所述作动信号进行伸缩，以驱动所述流量调节阀4开启一个与所述期望流量值相对应的开度。Step 2: The piston rod of the servo cylinder 2 expands and contracts according to the actuation signal, so as to drive the flow regulating valve 4 to open an opening corresponding to the expected flow value.
步骤三、所述流量计41检测得到流过所述流量调节阀4的实际流量值，并将所述实际流量值传递至所述PID控制器1。Step 3: The flow meter 41 detects the actual flow value passing through the flow regulating valve 4 , and transmits the actual flow value to the PID controller 1 .
同时，所述伺服缸2将活塞杆的位置信号传递至所述PID控制器1。At the same time, the servo cylinder 2 transmits the position signal of the piston rod to the PID controller 1 .
步骤四、所述PID控制器1判断所述实际流量值与所述期望流量值是否相等，相等时进行步骤五；否则，进行步骤六。Step 4: The PID controller 1 judges whether the actual flow value is equal to the expected flow value, and if they are equal, go to step 5; otherwise, go to step 6.
步骤五、保持所述伺服缸2的活塞杆处于步骤二中的位置。Step five, keep the piston rod of the servo cylinder 2 at the position in step two.
步骤六、所述PID控制器1根据所述伺服缸2活塞杆的位置信号和所述流量调节阀4的实际流量值信号，来控制所述伺服缸2活塞杆驱动所述流量调节阀4，以使得所述实际流量值等于所述期望流量值。Step 6, the PID controller 1 controls the piston rod of the servo cylinder 2 to drive the flow regulating valve 4 according to the position signal of the piston rod of the servo cylinder 2 and the actual flow value signal of the flow regulating valve 4, so that the actual flow value is equal to the expected flow value.
同样，本发明的发动机供油流量调节控制系统的控制方法中，通过伺服缸2来对流量调节阀4进行调节，使得试验设备结构简单，适应性更强。另外，还能够通过燃油系统回路中流量计41测得到的流量信息和活塞杆的位置信息来对伺服缸进行闭环控制，使得流量调节更方便快捷且更准确。Similarly, in the control method of the engine oil supply flow regulation control system of the present invention, the flow regulating valve 4 is adjusted through the servo cylinder 2, so that the test equipment has a simple structure and stronger adaptability. In addition, the closed-loop control of the servo cylinder can be carried out through the flow information measured by the flow meter 41 in the fuel system circuit and the position information of the piston rod, so that the flow adjustment is more convenient, faster and more accurate.
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.
Claims (3)
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| CN107781838B (en) * | 2016-08-30 | 2019-08-06 | 中国飞行试验研究院 | A kind of moveable pump pressure type atomized fuel water dispensing apparatus and decreasing water distribution method |
| CN108760319B (en) * | 2018-04-23 | 2024-06-04 | 无锡鑫盛换热器科技股份有限公司 | Flow-adjustable heat exchanger |
| CN109808916B (en) * | 2019-02-28 | 2022-06-28 | 南京航空航天大学 | An integrated test device and method for the measurement of fuel water distribution and pipeline icing |
| CN112945561A (en) * | 2021-01-15 | 2021-06-11 | 北京动力机械研究所 | High enthalpy engine test bed kerosene adjusting system and adjusting method |
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