CN107991609A - A kind of linear motor force constant rapid assay methods - Google Patents
A kind of linear motor force constant rapid assay methods Download PDFInfo
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- CN107991609A CN107991609A CN201711096182.7A CN201711096182A CN107991609A CN 107991609 A CN107991609 A CN 107991609A CN 201711096182 A CN201711096182 A CN 201711096182A CN 107991609 A CN107991609 A CN 107991609A
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- Prior art keywords
- force constant
- motor force
- linear motor
- assay methods
- rapid assay
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
Abstract
The present invention relates to electronic industrial technology field, and in particular to a kind of linear motor force constant rapid assay methods.A kind of linear motor force constant rapid assay methods, comprise the following steps：（1）Connect benchmark；（2）Using the phase voltage of U, V, W three-phase of three passages difference measuring coil of oscillograph, manual pushing motor uniform motion, catches the waveform of oscillograph, and Voltage Peak peak E when wave recording is uniformpk‑pkAnd the time t of whole wave periodp, can be repeated continuously, find out the most uniform waveform of speed and recorded；(3) motor force constant K is calculatedF, and measure electromotive force and line voltage.The present invention is a kind of method faster using the method measurement linear motor force constant of measurement counter electromotive force, the advantage is that and is not required what special equipment just can be faster to obtain motor force constant.
Description
Technical field
The present invention relates to electronic industrial technology field, and in particular to a kind of linear motor force constant rapid assay methods.
Background technology
The operation principle of linear motor is similar with electric rotating machine, also different, by taking permanent magnetic linear synchronous motor as an example, forever
The travelling-magnetic-field that the excitation field of magnet (stator) produces after being powered with coil (mover) interacts, and just produces thrust, due to
Stator is usually fixed, then mover will move along a straight line along corresponding direction.
Can most react motor performance for linear motor is exactly motor force constant.Motor force constant be motor thrust with
The ratio of electric current, it has been reacted, and the electromagnetic design of motor is horizontal, represents the ability that motor provides thrust.The size of force constant and its
Even property controls motor extremely important.Motor movement will reach certain performance, and motor force constant is too small to cause driving current
Excessive, electric current crosses the heat dissipation problem that conference triggers motor, and if the excessive selection of motor force constant driver is improper can reduce control
The resolution ratio of system, so the performance to reach as needed, designs suitable motor force constant.In addition motor force constant is uniform
Property be also an important index, motor force constant is irregular to cause the different local acceleration of motion of identical electric current different,
Measurement for motor force constant, traditional method needs to build special test platform, but this method implements the cycle
It is long, heavy workload, it is also necessary to dedicated equipment.
The content of the invention
The present invention is directed to propose a kind of method by measuring inverse electromotive force quick obtaining motor force constant.
Technical program of the present invention lies in：
A kind of linear motor force constant rapid assay methods, comprise the following steps：
（1）Connect benchmark；
（2）Using the phase voltage of U, V, W three-phase of three passages difference measuring coil of oscillograph, manual pushing motor is at the uniform velocity transported
It is dynamic, the waveform of oscillograph is caught, and Voltage Peak peak E when wave recording is uniformpk-pkAnd the time of whole wave period
tp, can be repeated continuously, find out the most uniform waveform of speed and recorded；
(3) motor force constant K is calculatedF, and measure electromotive force and line voltage.
Preferably, the step（3）In motor force constant K is calculatedFFormula be：
;
Wherein, BmaxThe maximum of-magnetic field intensity, effective cutting length of the L- coils in magnetic field.
It is highly preferred that the step（3）In phase back-emf be calculated be：
Wherein,Magnetic field angle where phase coil；V- passes through speed during current point；
Line counter electromotive force is：
Define back electromotive force constant：
The relational expression for obtaining force constant and back electromotive force constant is：
。
The technical effects of the invention are that：
The present invention is a kind of method faster using the method measurement linear motor force constant of measurement counter electromotive force, its advantage exists
In being not required what special equipment just can be faster to obtain motor force constant.
Embodiment
A kind of linear motor force constant rapid assay methods, comprise the following steps：
（1）Connect benchmark；
（2）Using the phase voltage of U, V, W three-phase of three passages difference measuring coil of oscillograph, manual pushing motor is at the uniform velocity transported
It is dynamic, the waveform of oscillograph is caught, and Voltage Peak peak E when wave recording is uniformpk-pkAnd the time of whole wave period
tp, can be repeated continuously, find out the most uniform waveform of speed and recorded；
(3) motor force constant K is calculatedF, and measure electromotive force and line voltage.
Wherein, the step（3）In motor force constant K is calculatedFFormula be：
;
Wherein, BmaxThe maximum of-magnetic field intensity, effective cutting length of the L- coils in magnetic field.
The step（3）In phase back-emf be calculated be：
Wherein,Magnetic field angle where phase coil；V- passes through speed during current point；
Line counter electromotive force is：
Define back electromotive force constant：
The relational expression for obtaining force constant and back electromotive force constant is：
。
Claims (3)
- A kind of 1. linear motor force constant rapid assay methods, it is characterised in that：Comprise the following steps：（1）Connect benchmark；（2）Using the phase voltage of U, V, W three-phase of three passages difference measuring coil of oscillograph, manual pushing motor is at the uniform velocity transported It is dynamic, the waveform of oscillograph is caught, and Voltage Peak peak E when wave recording is uniformpk-pkAnd the time of whole wave period tp, can be repeated continuously, find out the most uniform waveform of speed and recorded；（3）Motor force constant K is calculatedF, and measure electromotive force and line voltage.
- 2. such as a kind of linear motor force constant rapid assay methods of claim 1, it is characterised in that：The step（3）Fall into a trap Calculation obtains motor force constant KFFormula be：;Wherein, BmaxThe maximum of-magnetic field intensity, effective cutting length of the L- coils in magnetic field.
- 3. such as a kind of linear motor force constant rapid assay methods of claim 1, it is characterised in that：The step（3）Fall into a trap Calculation obtains phase back-emf：Wherein,Magnetic field angle where phase coil；V- passes through speed during current point；Line counter electromotive force is：Define back electromotive force constant：The relational expression for obtaining force constant and back electromotive force constant is：。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711096182.7A CN107991609A (en) | 2017-11-09 | 2017-11-09 | A kind of linear motor force constant rapid assay methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711096182.7A CN107991609A (en) | 2017-11-09 | 2017-11-09 | A kind of linear motor force constant rapid assay methods |
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| Publication Number | Publication Date |
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| CN107991609A true CN107991609A (en) | 2018-05-04 |
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| CN201711096182.7A Pending CN107991609A (en) | 2017-11-09 | 2017-11-09 | A kind of linear motor force constant rapid assay methods |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001629A (en) * | 2018-07-05 | 2018-12-14 | 青岛艾普智能仪器有限公司 | A kind of counter electromotive force test method of motor |
| CN110501516A (en) * | 2018-05-16 | 2019-11-26 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Combination velocity-measuring system and method for ultrahigh speed linear motor |
| CN111413017A (en) * | 2020-03-29 | 2020-07-14 | 苏州中时医疗科技有限公司 | Method for testing tension constant of voice coil motor |
| CN115951219A (en) * | 2023-03-14 | 2023-04-11 | 深圳市大族封测科技股份有限公司 | Servo motor force constant measuring method, measuring equipment and measuring device |
-
2017
- 2017-11-09 CN CN201711096182.7A patent/CN107991609A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501516A (en) * | 2018-05-16 | 2019-11-26 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Combination velocity-measuring system and method for ultrahigh speed linear motor |
| CN109001629A (en) * | 2018-07-05 | 2018-12-14 | 青岛艾普智能仪器有限公司 | A kind of counter electromotive force test method of motor |
| CN109001629B (en) * | 2018-07-05 | 2020-10-27 | 青岛艾普智能仪器有限公司 | Counter electromotive force testing method of motor |
| CN111413017A (en) * | 2020-03-29 | 2020-07-14 | 苏州中时医疗科技有限公司 | Method for testing tension constant of voice coil motor |
| CN115951219A (en) * | 2023-03-14 | 2023-04-11 | 深圳市大族封测科技股份有限公司 | Servo motor force constant measuring method, measuring equipment and measuring device |
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Application publication date: 20180504 |