CN103969580A - Motor testing system based on permanent magnetic coupler - Google Patents
Motor testing system based on permanent magnetic coupler Download PDFInfo
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- CN103969580A CN103969580A CN201410120618.1A CN201410120618A CN103969580A CN 103969580 A CN103969580 A CN 103969580A CN 201410120618 A CN201410120618 A CN 201410120618A CN 103969580 A CN103969580 A CN 103969580A
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- motor
- permanent magnet
- magnet clutch
- testing
- rotor position
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Abstract
The invention discloses a motor testing system based on a permanent magnetic coupler. The motor testing system sequentially comprises a tested motor, a first rotor position detection device, the permanent magnetic coupler, a second rotor position detection device and a testing motor, each of the tested motor and the testing motor is accompanied by a rotating shaft, the first rotor position detection device is positioned on the rotating shaft of the tested motor, the second motor position detection device is positioned on the rotating shaft of the testing motor, and the permanent magnetic coupler comprises a driving side and a driven side which are connected with the rotating shafts of the tested motor and the testing motor respectively. The motor testing system adopts the permanent magnetic coupler, and mechanical contact connection is replaced by magnetic contactless connection, so that structure of the motor testing system is simplified, detection reliability of the motor testing system is improved, and convenience in measuring is realized.
Description
Technical field
The present invention relates to electromechanical testing field, specifically, is a kind of Motor Measuring System based on permanent magnet clutch.
Background technology
Electromechanical testing is that technical parameter, performance index and the assembly quality to motor carries out Measurement and evaluation, is the important step in design, production and the manufacture process of motor.Motor Measuring System is generally by being formed by measured motor, load, shaft coupling or torque sensor, parameter measuring apparatus, base platform etc.
At present, traditional Motor Measuring System adopts shaft coupling or torque sensor are mechanical.Because active and passive end exists mechanical attachment, the accuracy of alignment during therefore to installation has very strict requirement.If the error of centralization exceeds certain limit, will cause high-frequency mechanical vibration, thereby cause mechanical fatigue reduction of service life.According to incompletely statistics, 90% above machenical coupling is all to damage because the high-frequency mechanical vibration that the error of centralization causes causes pin or bolt fatigue failure.
Permanent magnet clutch has been realized contactless transmission by the magnetic force of permanent magnet, has eliminated rigidity or flexible direct connection between main drive shaft and driven shaft.Compared with traditional contact gear train, the error of centralization that permanent magnet clutch device tolerable is larger, allows certain desaxe, can effectively eliminate the transmission of vibrating between motor and load.Therefore a kind of exploitation of the Motor Measuring System based on permanent magnet clutch is necessary.
Summary of the invention
Goal of the invention: for the deficiency existing in current Motor Measuring System, technical matters to be solved by this invention is to provide a kind of Motor Measuring System based on permanent magnet clutch, this Motor Measuring System has solved the problem that conventional motors test macro adopts mechanical type shaft coupling mode to bring, and can realize the measurement to tested motor speed, torque and output power.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of Motor Measuring System based on permanent magnet clutch, comprise successively tested motor, the first rotor position detecting device, permanent magnet clutch, the second detecting apparatus for rotor position and testing of electric motors, described tested motor and testing of electric motors are all with rotating shaft, described the first rotor position detecting device is positioned on tested machine shaft, described the second detecting apparatus for rotor position is positioned in testing of electric motors rotating shaft, described permanent magnet clutch comprises master end and slave end, and rotating shaft is connected with testing of electric motors with tested machine shaft respectively with slave end in the master end of permanent magnet clutch.
As preferably, described the first rotor position detecting device and the second detecting apparatus for rotor position are the device that rotary transformer or photoelectric coded disk or other can obtain the motor anglec of rotation continuously.
As preferably, described permanent magnet clutch is concentric type structure or tray type structure.
Wherein, described tested motor and testing of electric motors are all fixed on base.
Wherein, also comprise measurement and control unit.
Permanent magnet clutch a kind of novel coupler that to be magnetic force by permanent magnet couple together prime mover and working machine, permanent magnet clutch has following characteristics: contactless property connects, but utilizes the interaction between permanent magnet, carries out the transmission of mechanical energy; Between active and passive end, there is not the transmission of mechanical vibration, there is good buffering vibration absorption ability; Without friction parts, need not safeguard long working life; In the time of torque overload, two half a couplers produce slippage, realize overload protection.
The permanent magnet clutch of Motor Measuring System of the present invention has following torque characteristics: T=k*Tm*sin (A/p), wherein, T is the torque that permanent magnet clutch transmits, k is the correction factor relevant with permanent magnet clutch temperature, A is the angle between permanent magnet clutch master end and slave end, the number of pole-pairs that p is permanent magnet clutch.
By suitable design, permanent magnet clutch institute transmitting torque can and master end, slave end between angle become sine relation, utilize like this detecting apparatus for rotor position to record this angle and shaft coupling rotating speed, can obtain power and torque that permanent magnet clutch transmits, in transmitting torque, realize the function of torque measurement.
The principle of work of Motor Measuring System of the present invention is: by measuring the differential seat angle between permanent magnet clutch master end and slave end, can obtain real-time driving torque and real-time Transmission power in electromechanical testing.Record the rotor angle location A1 of tested motor and the rotor angle location A2 of testing of electric motors by the first rotor position detecting device and the second detecting apparatus for rotor position; The torque of transmitting by permanent magnet clutch between two motors can adopt following formula to calculate: T=k*Tm*sin (A1/p-A2/p); Meanwhile, adopt formula P=2* π/Ts*k*Tm*sin (A1/p-A2/p), thereby calculate the power that permanent magnet clutch transmits, the torque of permanent magnet clutch transmission and power are output torque and the output power of tested motor.
Beneficial effect: than prior art, Motor Measuring System of the present invention adopts permanent magnet clutch to replace traditional machenical coupling or torque sensor, replacing mechanicalness with the contactless connection of magnetic has contact to connect, not only simplify the structure of Motor Measuring System, but also improve the detecting reliability of Motor Measuring System, it is convenient to measure, and the permanent magnet clutch in simultaneity factor also has vibration protection and overload protection function; In addition, Motor Measuring System of the present invention has been cancelled the demand to special torque measurement instrument, can calculate rotating torque and the through-put power of permanent magnet clutch by the differential seat angle of measuring between permanent magnet clutch master end and slave end, thereby reduce the instrument and equipment input cost of system.
Brief description of the drawings
Fig. 1 is the structural representation of Motor Measuring System of the present invention;
Fig. 2 is the schematic diagram of concentric type structure permanent magnet clutch in Motor Measuring System of the present invention;
Fig. 3 is the schematic diagram of tray type structure permanent magnet clutch in Motor Measuring System of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is elaborated, the present embodiment is implemented under taking technical solution of the present invention as prerequisite, has provided detailed principle of work and concrete embodiment.But protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, Motor Measuring System based on permanent magnet clutch provided by the present invention, comprise successively tested motor 1, the first rotor position detecting device 7, permanent magnet clutch 9, the second detecting apparatus for rotor position 8 and testing of electric motors 2, described tested motor 1 and testing of electric motors 2 are all with rotating shaft, described the first rotor position detecting device 7 is positioned on tested machine shaft 3, described the second detecting apparatus for rotor position 8 is positioned in testing of electric motors rotating shaft 4, described permanent magnet clutch 9 comprises master end 5 and slave end 6, the master end 5 of permanent magnet clutch 9 is connected with testing of electric motors rotating shaft 4 with tested machine shaft 3 respectively with slave end 6, tested motor 1 and testing of electric motors 2 are all fixed on base 10.
This Motor Measuring System also comprises measurement and control unit, the electric output terminal of testing of electric motors 2 is connected with a PWM combining inverter, the dutycycle of this inverter is subject to observing and controlling unit controls, can realize the step-less adjustment of output power, make the steady operation of testing of electric motors 2 in keeping from the slow-speed of revolution to high engine speed range, the first rotor position detecting device 7 of this Motor Measuring System and the second detecting apparatus for rotor position 8 are selected rotary transformer, be used for measuring the rotating speed of two motors, its output signal is after decoding chip decoding, the rotor-position signal of two motors is sent to respectively to control module.
Measure the rotor angle location A1 of tested motor 1 by the first rotor position detecting device 7, and calculate one week time T s(measurement and control unit used of rotor by measurement and control unit and can obtain rotor according to the output signal of the first rotor position detecting device 7 and the second detecting apparatus for rotor position 8 and rotate a circle time T used s), measure the rotor angle location A2 of testing of electric motors 2 by the second detecting apparatus for rotor position 8.
The rotor-position of measuring by detecting apparatus for rotor position, can obtain the angle between motor speed and permanent magnet clutch master end and slave end, and then obtains the torque and the power that between two motors, transmit by permanent magnet clutch.
In the present embodiment, permanent magnet clutch 9 is selected concentric type permanent magnet clutch as shown in Figure 2, number of pole-pairs p=3, permanent magnet clutch 9 has following torque characteristics: T=k*Tm*sin (A/p), wherein, T is the torque that permanent magnet clutch transmits, and k is the correction factor relevant with permanent magnet clutch temperature, and A is the angle between permanent magnet clutch master end and slave end; Angle between permanent magnet clutch 9 master ends 5 and slave end 6 equals rotor angle location poor of tested motor 1 and testing of electric motors 2, be A=A1-A2, the torque of therefore transmitting by permanent magnet clutch between tested motor 1 and testing of electric motors 2 equals k*Tm*sin (A1/p-A2/p), the power transmitting by permanent magnet clutch between tested motor 1 and testing of electric motors 2 equals 2*pi/Ts*k*Tm*sin (A1/p-A2/p), and the torque of transmitting by permanent magnet clutch and power are output torque and the output power of tested motor 1.
Above embodiment has stated principal character of the present invention and ultimate principle.It is emphasized that; below be only a preferred embodiment of the present invention; the present invention is not restricted to the described embodiments, and any simple modification and equivalent variations that every foundation technical spirit of the present invention is done above embodiment, all still belong in the protection domain of technical solution of the present invention.
Claims (5)
1. the Motor Measuring System based on permanent magnet clutch, it is characterized in that: comprise successively tested motor, the first rotor position detecting device, permanent magnet clutch, the second detecting apparatus for rotor position and testing of electric motors, described tested motor and testing of electric motors are all with rotating shaft, described the first rotor position detecting device is positioned on tested machine shaft, described the second detecting apparatus for rotor position is positioned in testing of electric motors rotating shaft, described permanent magnet clutch comprises master end and slave end, rotating shaft is connected with testing of electric motors with tested machine shaft respectively with slave end in the master end of permanent magnet clutch.
2. the Motor Measuring System based on permanent magnet clutch according to claim 1, is characterized in that: described the first rotor position detecting device and the second detecting apparatus for rotor position are rotary transformer or photoelectric coded disk.
3. the Motor Measuring System based on permanent magnet clutch according to claim 1 and 2, is characterized in that: described permanent magnet clutch is concentric type structure or tray type structure.
4. the Motor Measuring System based on permanent magnet clutch according to claim 3, is characterized in that: described tested motor and testing of electric motors are all fixed on base.
5. the Motor Measuring System based on permanent magnet clutch according to claim 4, is characterized in that: also comprise measurement and control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410120618.1A CN103969580A (en) | 2014-05-26 | 2014-05-26 | Motor testing system based on permanent magnetic coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410120618.1A CN103969580A (en) | 2014-05-26 | 2014-05-26 | Motor testing system based on permanent magnetic coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103969580A true CN103969580A (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410120618.1A Pending CN103969580A (en) | 2014-05-26 | 2014-05-26 | Motor testing system based on permanent magnetic coupler |
Country Status (1)
| Country | Link |
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| CN (1) | CN103969580A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104494783A (en) * | 2014-12-25 | 2015-04-08 | 华中科技大学 | System for executing mechanical and shafting vibration measurement of ship thruster model |
| CN104777425A (en) * | 2015-03-31 | 2015-07-15 | 浙江大学 | Coaxial high-speed mutual feedback test platform for permanent magnet synchronous motor |
| CN106646230A (en) * | 2016-12-22 | 2017-05-10 | 哈尔滨工业大学 | High speed motor test loading system and load power adjusting method realized by same |
| CN107621605A (en) * | 2017-09-30 | 2018-01-23 | 日本电产凯宇汽车电器（江苏）有限公司 | Motor fatigue test easy device |
| CN109188270A (en) * | 2018-08-02 | 2019-01-11 | 沈阳工程学院 | A kind of main driving magneto performance test feedback system of electric airplane |
| CN109194040A (en) * | 2018-10-30 | 2019-01-11 | 郭柯 | A kind of non-contact torque measuring device |
| CN111239603A (en) * | 2020-01-15 | 2020-06-05 | 沈阳工业大学 | Device and method for testing inductance of permanent magnet synchronous reluctance motor for electric vehicle |
| CN116952437A (en) * | 2023-09-19 | 2023-10-27 | 航天泰心科技有限公司 | Motor torque measuring device |
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| JPS6231364A (en) * | 1985-07-29 | 1987-02-10 | Yoshiro Nakamatsu | Magnetic coupler |
| JP2012052948A (en) * | 2010-09-02 | 2012-03-15 | Seiko Epson Corp | Device and method for measuring loss of electric motor |
| CN103163460A (en) * | 2013-02-05 | 2013-06-19 | 安徽中家智锐科技有限公司 | Motor twin trawling platform used for motor test |
| CN203117392U (en) * | 2013-02-05 | 2013-08-07 | 安徽中家智锐科技有限公司 | Motor back-to-back test platform for motor tests |
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2014
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| JPS6231364A (en) * | 1985-07-29 | 1987-02-10 | Yoshiro Nakamatsu | Magnetic coupler |
| JP2012052948A (en) * | 2010-09-02 | 2012-03-15 | Seiko Epson Corp | Device and method for measuring loss of electric motor |
| CN103163460A (en) * | 2013-02-05 | 2013-06-19 | 安徽中家智锐科技有限公司 | Motor twin trawling platform used for motor test |
| CN203117392U (en) * | 2013-02-05 | 2013-08-07 | 安徽中家智锐科技有限公司 | Motor back-to-back test platform for motor tests |
Non-Patent Citations (1)
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| 刘若茜等: "永磁磁性联轴器设计中的关键问题及计算机辅助设计", 《真空》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104494783A (en) * | 2014-12-25 | 2015-04-08 | 华中科技大学 | System for executing mechanical and shafting vibration measurement of ship thruster model |
| CN104777425A (en) * | 2015-03-31 | 2015-07-15 | 浙江大学 | Coaxial high-speed mutual feedback test platform for permanent magnet synchronous motor |
| CN104777425B (en) * | 2015-03-31 | 2017-08-04 | 浙江大学 | Coaxial high-speed permanent magnetic synchronous motor mutually presents test platform |
| CN106646230A (en) * | 2016-12-22 | 2017-05-10 | 哈尔滨工业大学 | High speed motor test loading system and load power adjusting method realized by same |
| CN107621605A (en) * | 2017-09-30 | 2018-01-23 | 日本电产凯宇汽车电器（江苏）有限公司 | Motor fatigue test easy device |
| CN107621605B (en) * | 2017-09-30 | 2024-02-20 | 尼得科凯宇汽车电器(江苏)有限公司 | Simple device for testing motor fatigue |
| CN109188270A (en) * | 2018-08-02 | 2019-01-11 | 沈阳工程学院 | A kind of main driving magneto performance test feedback system of electric airplane |
| CN109194040A (en) * | 2018-10-30 | 2019-01-11 | 郭柯 | A kind of non-contact torque measuring device |
| CN111239603A (en) * | 2020-01-15 | 2020-06-05 | 沈阳工业大学 | Device and method for testing inductance of permanent magnet synchronous reluctance motor for electric vehicle |
| CN111239603B (en) * | 2020-01-15 | 2022-02-08 | 沈阳工业大学 | Device and method for testing inductance of permanent magnet synchronous reluctance motor for electric vehicle |
| CN116952437A (en) * | 2023-09-19 | 2023-10-27 | 航天泰心科技有限公司 | Motor torque measuring device |
| CN116952437B (en) * | 2023-09-19 | 2023-12-15 | 航天泰心科技有限公司 | Motor torque measuring device |
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Application publication date: 20140806 |