CN107834916A - A kind of inexpensive velocity indicating device of brshless DC motor - Google Patents
A kind of inexpensive velocity indicating device of brshless DC motor Download PDFInfo
- Publication number
- CN107834916A CN107834916A CN201711172035.3A CN201711172035A CN107834916A CN 107834916 A CN107834916 A CN 107834916A CN 201711172035 A CN201711172035 A CN 201711172035A CN 107834916 A CN107834916 A CN 107834916A
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- Prior art keywords
- resistance
- motor
- brshless
- parallel
- inexpensive
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- 230000005611 electricity Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
- H02P6/17—Circuit arrangements for detecting position and for generating speed information
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
- H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2203/00—Indexing scheme relating to controlling arrangements characterised by the means for detecting the position of the rotor
- H02P2203/09—Motor speed determination based on the current and/or voltage without using a tachogenerator or a physical encoder
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a kind of inexpensive velocity indicating device of brshless DC motor, the instruction device is connected with each other by dc source, three resistance R1, R2 and R3, triode, the PWM wave producers of brshless DC motor and voltmeter forms successively.Wherein, the resistance R3 connects with the triode, the resistance R2 is connected in parallel on the resistance R3 and the transistor emitter both ends, the resistance R1 connects with described resistance R2, R3, the voltmeter is connected in parallel on the resistance R1 both ends, the dc source is connected in parallel on the resistance R1 and the transistor emitter both ends, and the brshless DC motor PWM wave producers output connects the transistor base.Disclosed device of the present invention solves the high Cost Problems brought by sensor to the Rotating speed measring of brshless DC motor, and the rotating speed instruction of brshless DC motor is realized under very low cost.
Description
Technical field
The invention belongs to brshless DC motor technical field, and in particular to a kind of inexpensive rotating speed of brshless DC motor refers to
Showing device.
Background technology
Brshless DC motor is widely used in recent years, and it has control simple, efficiency high, good speed adjustment features, defeated
Go out the features such as torque is big.In robot, space flight and aviation, precision electronic device and equipment etc. to motor performance, control accuracy requirement
Higher occasion and field, the application and research of brshless DC motor receive extensive attention.As brshless DC motor should
Continuous development, Control System Design of the people to motor requires more and more higher, in order to realize velocity close-loop control, it is necessary to survey
Go out motor speed size.
Detection motor speed method have a lot, according to detection used by operation principle be commonly divided into three kinds：Simulation
Formula, synchronous mode and counter.Brshless DC motor is divided into two classes again：The brshless DC motor of position sensor and without position pass
The brshless DC motor of sensor.Due to capacity all very littles of most brshless DC motors, it should not typically install on axle and such as test the speed
The speed measuring device such as motor or photoelectric coded disk, for this, researcher proposes many methods to obtain brshless DC motor indirectly
Rotary speed information, but various schemes all have advantage and disadvantage, are not to be applied to all motors, it is therefore necessary to brushless direct-current
The detection method of motor speed carries out induction and conclusion, finds a kind of new safety without sensor, the rotating speed inspection of reliable low cost
Survey method.
The content of the invention
It is an object of the invention to solve at least the above, and provide the advantages of at least will be described later.
It is contemplated that using extra speed probe for the instruction of brshless DC motor rotating speed, cost is higher to ask
A kind of topic, there is provided inexpensive velocity indicating device avoided using additional sensors.
In order to realize according to object of the present invention and further advantage, there is provided a kind of low cost of brshless DC motor
Velocity indicating device, including：Dc source, three resistance R1, R2 and R3, triode, brshless DC motor PWM wave producers with
And voltmeter；Wherein, the resistance R3 connects with the transistor collector, and the resistance R2 is connected in parallel on the resistance R3 and institute
The both ends of transistor emitter are stated, the resistance R2, resistance R3 are connected in parallel on described resistance R1 one end, and the voltmeter is connected in parallel on institute
Resistance R1 both ends are stated, the dc source is connected in parallel on the resistance R1 and the transistor emitter both ends, described brushless straight
Flow the output of motor PWM wave producer and connect the transistor base.
Preferably, the brshless DC motor PWM wave producers select the PWM ripples for carrying out speed governing to brshless DC motor to send out
Raw device, the i.e. instruction device share a PWM ripple, the electricity that the resistance R3 is connected with triode with the brshless DC motor
Resistance equivalence value associates with the brshless DC motor tachometer value.
The present invention comprises at least following beneficial effect：
1st, the inexpensive velocity indicating device for the brshless DC motor that the present invention uses, simple in construction, cost is low, practicality
By force；
2nd, in the case of without using extra speed probe, dexterously tach signal and resistance terminal voltage signal are connected
System, greatly reduce the cost of rotating speed instruction.
Further advantage, target and the feature of the present invention embodies part by following explanation, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Brief description of the drawings
Fig. 1 is the structural representation of the inexpensive velocity indicating device of the brshless DC motor of the specific embodiment of the invention；
Fig. 2 is the voltage instruction signal of the inexpensive velocity indicating device of the brshless DC motor of the specific embodiment of the invention
Figure；
Fig. 3 is the rotating speed instruction signal of the inexpensive velocity indicating device of the brshless DC motor of the specific embodiment of the invention
Figure.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text
Word can be implemented according to this.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of individual other elements or its combination.
The present invention provides a kind of inexpensive velocity indicating device of brshless DC motor, and as Figure 1-3, Fig. 1 is this reality
The structural representation of the inexpensive velocity indicating device of the brshless DC motor of example is applied, as shown in figure 1, the instruction device is wrapped successively
Include dc source 1, resistance R1, resistance R2 and resistance R3, triode 2, brshless DC motor PWM wave producers 3 and voltmeter 4；
Wherein, the resistance R3 connects with the colelctor electrode of the triode 2, and the resistance R2 is connected in parallel on the resistance R3 and three pole
The both ends of the emitter stage of pipe 2, the resistance R2, resistance R3 are connected in parallel on described resistance R1 one end, and the voltmeter 4 is connected in parallel on the electricity
R1 both ends are hindered, the dc source 1 is connected in parallel on the resistance R1 and the emitter stage of triode 2 both ends, the brushless direct-current
The output of motor PWM wave producer 3 connects the base stage of triode 2.
The inexpensive velocity indicating device of the brshless DC motor of the present embodiment, simple in construction, cost is low, practical.
In the case of without using extra speed probe, dexterously tach signal is associated with resistance terminal voltage signal, dropped significantly
The cost of low rotating speed instruction.
Further, the brshless DC motor PWM wave producers 3 directly carry out speed governing to brshless DC motor
PWM wave producers, the i.e. instruction device share a PWM ripple, the electricity that resistance R3 is connected with triode 2 with brshless DC motor
Resistance equivalence value associates with brshless DC motor tachometer value.
Carried out with reference to the indicating section of the inexpensive velocity indicating device of Fig. 2-3 pairs of brshless DC motors further detailed
Thin explanation.
Fig. 3 is that the rotating speed of the inexpensive velocity indicating device of the brshless DC motor of the present embodiment indicates schematic diagram, such as Fig. 2
Shown, voltmeter range arrives 5V for 0, and the rotating speed of corresponding brshless DC motor is 0 to 100 turns per minute.When voltage list index refers to
During to 0, the rotating speed of corresponding brshless DC motor is 0；When voltage list index points to 1, the rotating speed of corresponding brshless DC motor is
20 turns per minute, by that analogy, when voltage list index points to 5, the rotating speed of corresponding brshless DC motor is 100 turns per minute.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, it is of the invention and unlimited
In specific details and shown here as the legend with description.
Claims (2)
- A kind of 1. inexpensive velocity indicating device of brshless DC motor, it is characterised in that including：Dc source, three resistance R1, R2 and R3, triode, brshless DC motor PWM wave producers and voltmeter；Wherein, the resistance R3 and three pole Pipe collector is connected, and the resistance R2 is connected in parallel on the resistance R3 and the transistor emitter both ends, the resistance R2, electricity Resistance R3 is connected in parallel on described resistance R1 one end, and the voltmeter is connected in parallel on the resistance R1 both ends, and the dc source is connected in parallel on institute Resistance R1 and the transistor emitter both ends are stated, the brshless DC motor PWM wave producers output connects three pole Pipe base stage.
- 2. the inexpensive velocity indicating device of brshless DC motor as claimed in claim 1, it is characterised in that described brushless straight Flow motor PWM wave producer and select the PWM wave producers that speed governing is carried out to brshless DC motor, the i.e. instruction device and the nothing Brushless motor shares a PWM ripple, the equivalent resistance that the resistance R3 is connected with triode and the brushless dc Machine tachometer value associates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711172035.3A CN107834916A (en) | 2017-11-22 | 2017-11-22 | A kind of inexpensive velocity indicating device of brshless DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711172035.3A CN107834916A (en) | 2017-11-22 | 2017-11-22 | A kind of inexpensive velocity indicating device of brshless DC motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107834916A true CN107834916A (en) | 2018-03-23 |
Family
ID=61652261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711172035.3A Withdrawn CN107834916A (en) | 2017-11-22 | 2017-11-22 | A kind of inexpensive velocity indicating device of brshless DC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107834916A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110611461A (en) * | 2019-10-17 | 2019-12-24 | 江苏科技大学 | Brushless DC Motor Speed Indicating Device and Indicating Method |
| CN111830327A (en) * | 2020-08-10 | 2020-10-27 | 深圳大漠大智控技术有限公司 | Device and method for measuring phase resistance of brushless DC motor |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856078A (en) * | 1988-03-23 | 1989-08-08 | Zenith Electronics Corporation | DC fan speed control |
| WO1993019381A1 (en) * | 1992-03-18 | 1993-09-30 | Lake Shore Cryotronics, Inc. | Method and apparatus for measuring ac susceptibility and dc magnetization of a sample |
| CN1490191A (en) * | 2003-08-15 | 2004-04-21 | 南京金陵紫光系统工程有限公司 | Assembled instrument step motor controller of vehicle and control mode thereof |
| US20050256670A1 (en) * | 2004-05-11 | 2005-11-17 | Standard Microsystems Corporation | Method and apparatus to achieve accurate fan tachometer readings for fans with different speeds |
| CN101098116A (en) * | 2006-06-30 | 2008-01-02 | 比亚迪股份有限公司 | A method for analog stepless speed regulation of DC brushless motor |
| CN101895246A (en) * | 2010-06-08 | 2010-11-24 | 上海新进半导体制造有限公司 | Control pulse generating circuit and regulating system and method of direct current brushless motor speed |
| CN101915895A (en) * | 2010-07-13 | 2010-12-15 | 杭州电子科技大学 | Dynamic Potential Detection Circuit of DC Motor |
| CN102412771A (en) * | 2010-09-21 | 2012-04-11 | 台达电子工业股份有限公司 | Single-phase DC brushless motor controller and method for controlling motor speed and rotation direction thereof |
| CN105242062A (en) * | 2015-10-10 | 2016-01-13 | 广东威创视讯科技股份有限公司 | Fan rotating speed detection apparatus |
| CN105553355A (en) * | 2016-02-18 | 2016-05-04 | 江苏科技大学 | Current limiting value adjustment device and method for brushless direct current motor for driving electric motor car |
-
2017
- 2017-11-22 CN CN201711172035.3A patent/CN107834916A/en not_active Withdrawn
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4856078A (en) * | 1988-03-23 | 1989-08-08 | Zenith Electronics Corporation | DC fan speed control |
| WO1993019381A1 (en) * | 1992-03-18 | 1993-09-30 | Lake Shore Cryotronics, Inc. | Method and apparatus for measuring ac susceptibility and dc magnetization of a sample |
| CN1490191A (en) * | 2003-08-15 | 2004-04-21 | 南京金陵紫光系统工程有限公司 | Assembled instrument step motor controller of vehicle and control mode thereof |
| US20050256670A1 (en) * | 2004-05-11 | 2005-11-17 | Standard Microsystems Corporation | Method and apparatus to achieve accurate fan tachometer readings for fans with different speeds |
| CN101098116A (en) * | 2006-06-30 | 2008-01-02 | 比亚迪股份有限公司 | A method for analog stepless speed regulation of DC brushless motor |
| CN101895246A (en) * | 2010-06-08 | 2010-11-24 | 上海新进半导体制造有限公司 | Control pulse generating circuit and regulating system and method of direct current brushless motor speed |
| CN101915895A (en) * | 2010-07-13 | 2010-12-15 | 杭州电子科技大学 | Dynamic Potential Detection Circuit of DC Motor |
| CN102412771A (en) * | 2010-09-21 | 2012-04-11 | 台达电子工业股份有限公司 | Single-phase DC brushless motor controller and method for controlling motor speed and rotation direction thereof |
| CN105242062A (en) * | 2015-10-10 | 2016-01-13 | 广东威创视讯科技股份有限公司 | Fan rotating speed detection apparatus |
| CN105553355A (en) * | 2016-02-18 | 2016-05-04 | 江苏科技大学 | Current limiting value adjustment device and method for brushless direct current motor for driving electric motor car |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110611461A (en) * | 2019-10-17 | 2019-12-24 | 江苏科技大学 | Brushless DC Motor Speed Indicating Device and Indicating Method |
| CN111830327A (en) * | 2020-08-10 | 2020-10-27 | 深圳大漠大智控技术有限公司 | Device and method for measuring phase resistance of brushless DC motor |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180323 |
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| WW01 | Invention patent application withdrawn after publication |