CN101509815A - Linear electric motor mechanical characteristic test system and method - Google Patents
Linear electric motor mechanical characteristic test system and method Download PDFInfo
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- CN101509815A CN101509815A CNA2008102429247A CN200810242924A CN101509815A CN 101509815 A CN101509815 A CN 101509815A CN A2008102429247 A CNA2008102429247 A CN A2008102429247A CN 200810242924 A CN200810242924 A CN 200810242924A CN 101509815 A CN101509815 A CN 101509815A
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Abstract
A test system and a method used for testing the mechanical properties of a linear motor belong to the technical field mechanical property detection of linear motors. The system includes two parts of a data acquisition platform and a data processor, wherein the data acquisition platform includes a pressure transducer and a displacement transducer which are linked with the output end of the linear motor, as well as a data acquisition card which is connected with the pressure transducer for acquiring a pressure signal and also connected with the displacement transducer for synchronously acquiring a displacement signal. After the acquired signals are processed by the data processor, the relation curve between the speed and output force of the linear motor and relative output characteristics thereof are obtained. The system is simple in structure and highly efficient in acquiring the output force and displacement quantity of the linear motor, and directly and effectively reflects the characteristic relation between the push power and speed of the linear motor and the output characteristics thereof.
Description
Technical field
The present invention is used for test macro and the method to the linear electric motor mechanical characteristic analysis, belongs to linear motor performance detection technique field.
Background technology
Ultrasound electric machine is an inverse piezoelectric effect of utilizing piezoelectric ceramics, and electric energy is converted to elastomeric mechanical vibrational energy, and the New-type electric machine that relies on friction force to drive.As a kind of brand-new energy conversion device, advantage such as it has low speed high torque, volume is little, in light weight, power density is big, response speed is fast, micrometric displacement, the influence that is not subjected to electromagnetic field, power down self-locking, design freedom are big is before there is wide application in fields such as Aero-Space, medicine equipment, exact instrument, finishing.The development of ultrasound electric machine only has the history of two more than ten years.Early stage research emphasis concentrates on the exploitation of new construction model machine and the research of its operation mechanism.Along with ultrasound electric machine research deeply and move towards the marketization, at present, people pay close attention to stability and the controllability that ultrasound electric machine moves.The control technology of ultrasound electric machine is one of gordian technique that realizes ultrasound electric machine stable operation and effectively control.And be the prerequisite that realizes its effectively control (operation characteristic control and accurately positioning control) to the detection of its operation characteristic.Exploitation ultrasound electric machine mechanic property testing system helps the research of the test of ultrasound electric machine dynamic performance parameter, positioning control and control strategy.Document 1 (willow state, Shi Zhongdong, Muhsin.Exploitation of linear electric motors test macro and performance evaluation.Small and special electric machine, 2007,6:19-21) developed permanent magnet AC linear synchronous motor test macro.The principal character of this system is: drive feed screw nut promotion guide rail by servo electric rotating machine rectilinear motion is applied load, so the travelling speed of guide rail depends on the rotational speed of servo electric rotating machine.In test, motor is applied load in order to realize, the direction of motion of lead screw guide rails and the movement tendency of motor are to instead, since linear electric motors elementary with leading screw between directly be connected by pressure transducer, so the actual motion of electric motor primary is the same with lead screw guide rails, test macro can not be tested the travelling speed of linear electric motors, only can test the lead screw guide rails travelling speed opposite with the motor movement direction.The test mode of this system determines that it can not measure the power output and the travelling speed of motor simultaneously, and what more can not be used for analyzing motor opens, stops characteristic.The ultrasound electric machine response speed is fast, and its mechanical property is subjected to extraneous load effect big, above-mentioned test macro can not test the relation property and the mechanical property thereof of linear ultrasonic motor power output and speed.Still have nothing to do in the report of ultrasound electric machine mechanic property testing system at present, therefore need exploitation can test the test macro of linear ultrasonic motor mechanical property.
Summary of the invention:
The objective of the invention is to develop a kind of test macro that is used to test linear electric motor mechanical characteristic.
A kind of test macro that is used to test linear electric motor mechanical characteristic comprises pressure transducer and grating chi, and wherein the scale grating is fixed on the displacement chi, moves with sliding axle.Mover promotion sliding axle moves on guide rail behind the electric motor starting, and guide rail makes spring produce distortion, and pressure transducer is exerted pressure, and gathers pressure signal by data acquisition platform; Grid stroke sensor output dfisplacement pulse in the process of sliding axle motion, and by data processor synchronous acquisition displacement signal.The signal of being gathered obtains linear electric motors speed-power output relation curve and relevant mechanical property thereof through after the data processor processes.
Said structure guarantees: (1) synchronous acquisition linear electric motors are starting, are moving, are stopping the thrust constantly and the size of displacement; (2) and by PC handle the data that collect in real time, show the family curve of the power output-displacement of linear electric motors in real time; (3) power output and the displacement of simple in structure, the highly effective gathering linear electric motors of this linear electric motor mechanical characteristic test system directly reflect the characteristic relation and the output characteristics thereof of the thrust-speed of linear electric motors effectively.
Essential characteristic of the present invention is: be connected by spring between linear motor rotor and the pressure transducer, make that the operation of linear motor rotor is not interrupted, directly promote the rail plate motion by linear ultrasonic motor self, so the travelling speed of guide rail is the speed of motor; Simultaneously, along with the motion of guide rail, spring is compressed, and this moment, the tension force of spring increased, and the suffered load of motor increases synchronously.
The characteristic that opens, stops of motor shows as motor start (or shutdown) back to the interior during this period of time time-velocity characteristic of velocity-stabilization (stopping).Opening, stopping of the connected mode assurance motor of pressure transducer, spring, guide rail and electric mover is not interrupted, with the measurement that realizes opening, stop characteristic.
Description of drawings:
Fig. 1 is the structural representation of data acquisition platform.
Fig. 2 is the schematic diagram of linear electric motor mechanical characteristic test system.
Fig. 3 is the K type linear ultrasonic motor that is used to test.
Label title among the figure: 1 pressure transducer; 2 grating grooves; 3 masses; 4 displacement chis; 5 sliding axles; 6 bases; 7 pickup grooves; 8 guide rails; 9 springs; 10 linear electric motors; 11 displacement chis; 12 grating reading heads; 13 data collecting cards; 14 computers; 21. holder; 31. piezoelectric ceramic piece; 41. front end; 42. drive foot; 51 electrode slices; 61. rear end; 71. draw runner.
Embodiment:
A kind of test platform that is used to test linear electric motors power output and speed as shown in Figure 1.Its characteristics are: the test component of described platform mainly contains pressure transducer and optical grid line displacement sensor.Linear electric motors are installed on the pickup groove, and the mover of maintenance linear electric motors and axle and mass are on same straight line; The grating scale of suitable length is affixed on the displacement chi, so that be installed in the read head on the grating groove can be gathered grating in the whole startup stopped process of motor step-by-step counting; Before the electric motor starting,, keep both to contact and do not have other external force acting on both with the mover of mass near linear electric motors.After starting linear electric motors, the mover of linear electric motors promotes the spring of mass and sliding axle compression sensor front end, spring produces compression set, the kinetic energy of mover converts the elastic potential energy of spring at this moment, since the functionality and the reactivity of power, the thrust of mover by spring action on pressure transducer.The displacement chi is in the proal process of mass, the scale grating that is attached on the displacement chi produces relative displacement with the indication grating that is installed in the grating reading head on the grating groove, grating reading head output dfisplacement pulse is by the real-time synchronously magnitude of voltage of gathering displacement pulse signals and pressure transducer of data card.
The linear electric motors test principle as shown in Figure 2.By gathering pressure and displacement two paths of signals, and the two is handled on PC, according to formula
Displacement is converted to the speed amount, realizes the drafting of the performance diagram of linear electric motors power output-speed.
By the input voltage of linear synchronous motor input end and the collection pressure and the displacement two paths of signals of current signal and output terminal, and will on PC, handle, just can realize the drafting of the performance diagram of linear electric motors power output-power, and the drafting of the performance diagram of power output-efficient.
Time-velocity characteristic in a period of time behind the electric motor starting that system put down in writing can be used to analyze the starting characteristic of motor, and the motor that system put down in writing shutdown back can be used to analyze the characteristic of closing down of motor to the time-velocity characteristic in shutting down during this period of time.
Be an example that is used for the test of K type linear ultrasonic motor below.
This K type linear ultrasonic motor stator is by two the orthogonal K of formation fonts of Langevin-type transducer center line, the mover of this motor is a draw runner, the sinusoidal signal that to adopt two phase differential be pi/2 encourages two piezoelectric vibrators of stator simultaneously, excite two of stators with the mode of oscillations of phase differential pi/2s frequently, make to drive sufficient particle on the stator and do elliptic motion.
This K type linear ultrasonic motor is fixed on the pickup groove of linear electric motors test macro, mover contacts with mass, and keep the mover of motor and the mass and the sliding axle of test macro to be on the same axis, and do not have external force and act between mover and the mass.Under two sinusoidal excitation signal effects of phase differential pi/2, the slide rail of linear electric motors is done rectilinear motion, and promote mass and sliding axle moves on guide rail, and compression spring, because the functionality and the reactivity of power, pressure transducer output pressure signal, displacement chi and mass together move, grating reading head output grating pulse signal, and data collecting card is gathered two-way pressure and displacement signal simultaneously, the input PC is handled, the family curve of the power output-speed of output K type linear electric motors; When motor moved, the electric current and the voltage signal of the input end of PC synchronous acquisition motor through after the data processing, and can provide the family curve of power output-power of motor and the family curve of power output-efficient; What also can be used to analyze motor opens, stops characteristic.
Claims (7)
1, a kind of test macro that is used to test linear electric motor mechanical characteristic, it is characterized in that: comprise data acquisition platform and data processor two parts composition, wherein data acquisition platform comprises pressure transducer and displacement transducer and the data collecting card that interrelates with the linear electric motors output terminal, wherein data collecting card and above-mentioned pressure transducer link and are used to gather pressure signal, and also linking with above-mentioned displacement transducer is used for the synchronous acquisition displacement signal.
2, according to the described test macro that is used to test linear electric motor mechanical characteristic of claim 1, it is characterized in that: described data acquisition platform concrete structure is as follows:
Comprise base (6), be installed on guide rail (8) on the base, by the sliding axle on the guide rail (5) installation quality piece (3);
Displacement chi (4) posts the scale grating with fixedly connected can the sliding with it of mass on the displacement chi, described displacement chi, scale grating and the grating reading head that is installed on the base have constituted displacement transducer;
Pressure transducer (1) is installed on the base upper bracket away from mass one end, and described pressure transducer is got in touch with detected pressures information by spring assembly and described mass.
3, according to the described test macro that is used to test linear electric motor mechanical characteristic of claim 1, it is characterized in that: described base near mass one end is provided with the linear electric motors pickup groove.
4, a kind of method of testing that is used to test linear electric motor mechanical characteristic is characterized in that:
The pressure signal and the displacement signal of the output of synchronous acquisition linear electric motors;
The signal of being gathered obtains linear electric motors speed-power output relation curve and relevant output characteristics thereof through after the data processor processes.
5, the method for testing that is used to test linear electric motor mechanical characteristic according to claim 4 is characterized in that:
The pressure signal of described synchronous acquisition linear electric motors output and displacement signal rely on following concrete mode to realize: the linear motor rotor of utilization motion promotes mass and compression spring produces deformation, thereby pressure transducer is exerted pressure; Utilize the linear motor rotor of motion to promote mass and drive the scale grating that posts on the displacement chi to move, and utilize the grating reading head reading, by grating encoder output dfisplacement pulse.
6, a kind of method of testing that is used to test linear electric motor mechanical characteristic is characterized in that:
The voltage and current signal of synchronous acquisition linear electric motors input end and the pressure signal and the displacement signal of output;
The signal of being gathered obtains linear electric motors power output-power relation curve and relevant output characteristics thereof through after the data processor processes, and power output-relationship between efficiency curve and relevant output characteristics thereof.
7, a kind of method of testing that is used to test linear electric motor mechanical characteristic is characterized in that:
The voltage and current signal of synchronous acquisition linear electric motors input end and the pressure signal and the displacement signal of output;
The signal gathered is through after the data processor processes, obtains that linear electric motors are defeated to open, stop characteristic.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435944A (en) * | 2011-08-25 | 2012-05-02 | 哈尔滨工业大学 | Device and method for testing force characteristic of linear electric motor |
| CN102564666A (en) * | 2012-02-26 | 2012-07-11 | 吉林大学 | Non-driving power measuring system for travelling machinery |
| CN102707229A (en) * | 2012-05-07 | 2012-10-03 | 宁波依诺汽车电子有限公司 | Function test equipment for dimming motor |
| CN102866355A (en) * | 2012-09-25 | 2013-01-09 | 上海理工大学 | Linear motor power performance testing device used for numerical control direct feeding shaft |
| CN102998043A (en) * | 2012-12-12 | 2013-03-27 | 北方工业大学 | Device and method for monitoring dynamic thrust of linear motor in suspension state |
| CN103472394A (en) * | 2013-09-29 | 2013-12-25 | 哈尔滨工业大学 | Testing method for mechanical characteristics of alternating-current permanent magnet motors |
| CN105974310A (en) * | 2016-05-12 | 2016-09-28 | 上海理工大学 | Adjustable-load linear motor performance test bench |
| CN107314851A (en) * | 2017-07-31 | 2017-11-03 | 哈尔滨工业大学 | Linear motor thrust testing device and the method using the measurement device force oscillation |
| CN108508361A (en) * | 2018-04-09 | 2018-09-07 | 南京航空航天大学 | A kind of linear piezoelectric motor electromechanical properties test system |
| CN109031123A (en) * | 2018-09-18 | 2018-12-18 | 江苏大学 | A kind of linear type small and special electric machine performance automatic test system |
| CN109188279A (en) * | 2018-09-27 | 2019-01-11 | 珠海格力电器股份有限公司 | Linear electric motor performance testing device |
| CN109612419A (en) * | 2018-12-31 | 2019-04-12 | 武汉新源汇诚智能科技有限公司 | The detection system and its method of motor axial length deviation and diastema cun method |
| CN110275108A (en) * | 2018-03-16 | 2019-09-24 | 中国石油天然气股份有限公司 | Linear motor detection system and method |
| CN111579136A (en) * | 2020-05-22 | 2020-08-25 | 中国船舶重工集团公司第七0四研究所 | Device and method for testing efficiency of electric cylinder |
| CN114509672A (en) * | 2020-10-23 | 2022-05-17 | 襄阳中车电机技术有限公司 | Traction linear motor characteristic test device |
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2008
- 2008-12-24 CN CN2008102429247A patent/CN101509815B/en not_active Expired - Fee Related
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435944A (en) * | 2011-08-25 | 2012-05-02 | 哈尔滨工业大学 | Device and method for testing force characteristic of linear electric motor |
| CN102435944B (en) * | 2011-08-25 | 2014-01-22 | 哈尔滨工业大学 | Method for testing force characteristic of linear electric motor |
| CN102564666B (en) * | 2012-02-26 | 2015-07-15 | 吉林大学 | Non-driving power measuring system for travelling machinery |
| CN102564666A (en) * | 2012-02-26 | 2012-07-11 | 吉林大学 | Non-driving power measuring system for travelling machinery |
| CN102707229A (en) * | 2012-05-07 | 2012-10-03 | 宁波依诺汽车电子有限公司 | Function test equipment for dimming motor |
| CN102707229B (en) * | 2012-05-07 | 2015-04-15 | 宁波依诺汽车电子有限公司 | Function test equipment for dimming motor |
| CN102866355A (en) * | 2012-09-25 | 2013-01-09 | 上海理工大学 | Linear motor power performance testing device used for numerical control direct feeding shaft |
| CN102866355B (en) * | 2012-09-25 | 2014-10-29 | 上海理工大学 | Linear motor power performance testing device used for numerical control direct feeding shaft |
| CN102998043A (en) * | 2012-12-12 | 2013-03-27 | 北方工业大学 | Device and method for monitoring dynamic thrust of linear motor in suspension state |
| CN102998043B (en) * | 2012-12-12 | 2015-05-13 | 北方工业大学 | Device and method for monitoring dynamic thrust of linear motor in suspension state |
| CN103472394A (en) * | 2013-09-29 | 2013-12-25 | 哈尔滨工业大学 | Testing method for mechanical characteristics of alternating-current permanent magnet motors |
| CN103472394B (en) * | 2013-09-29 | 2015-09-09 | 哈尔滨工业大学 | AC magnetoelectric machine mechanical characteristic test method |
| CN105974310A (en) * | 2016-05-12 | 2016-09-28 | 上海理工大学 | Adjustable-load linear motor performance test bench |
| CN105974310B (en) * | 2016-05-12 | 2018-10-12 | 上海理工大学 | Tunable load linear motor performance is test bed |
| CN107314851A (en) * | 2017-07-31 | 2017-11-03 | 哈尔滨工业大学 | Linear motor thrust testing device and the method using the measurement device force oscillation |
| CN110275108A (en) * | 2018-03-16 | 2019-09-24 | 中国石油天然气股份有限公司 | Linear motor detection system and method |
| CN108508361A (en) * | 2018-04-09 | 2018-09-07 | 南京航空航天大学 | A kind of linear piezoelectric motor electromechanical properties test system |
| CN109031123A (en) * | 2018-09-18 | 2018-12-18 | 江苏大学 | A kind of linear type small and special electric machine performance automatic test system |
| CN109031123B (en) * | 2018-09-18 | 2020-08-28 | 江苏大学 | Automatic linear type micro-special motor performance testing system |
| CN109188279A (en) * | 2018-09-27 | 2019-01-11 | 珠海格力电器股份有限公司 | Linear electric motor performance testing device |
| CN109612419A (en) * | 2018-12-31 | 2019-04-12 | 武汉新源汇诚智能科技有限公司 | The detection system and its method of motor axial length deviation and diastema cun method |
| CN111579136A (en) * | 2020-05-22 | 2020-08-25 | 中国船舶重工集团公司第七0四研究所 | Device and method for testing efficiency of electric cylinder |
| CN114509672A (en) * | 2020-10-23 | 2022-05-17 | 襄阳中车电机技术有限公司 | Traction linear motor characteristic test device |
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