CN1560579A - Linear electric machine trust measuring device - Google Patents
Linear electric machine trust measuring device Download PDFInfo
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- CN1560579A CN1560579A CNA2004100121746A CN200410012174A CN1560579A CN 1560579 A CN1560579 A CN 1560579A CN A2004100121746 A CNA2004100121746 A CN A2004100121746A CN 200410012174 A CN200410012174 A CN 200410012174A CN 1560579 A CN1560579 A CN 1560579A
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- linear motor
- dynamicthrust
- push
- pull effort
- force transmission
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Abstract
The invention is pushing force measuring device for linear motor, which includes a pushing and pulling force sensor, damp load device, sliding wheel and a round sliding wheel and soft gearing part of the driven part on the damp load device, it also includes a connecting part on which there arranges a soft gearing part connecting aperture and the a fixing aperture of the sensor, one end of the senor is connected to the fixing aperture of the senor, the two ends of the soft gearing part are fixed onto the connecting apertures of the connecting part. The invention eliminates the affection to the measuring precision of the buffer inertia when the linear motor moves reciprocally. The precision of the improved motor is upgraded prominently; it approaches the real pushing force of the motor.
Description
Technical field
The present invention relates to linear motor dynamicthrust determinator.
Background technology
In the linear motor research field, the mensuration of linear motor dynamicthrust is to estimate an important parameter of linear motor characteristic, and it is very important obtaining correct dynamicthrust measurement result.
Domestic dynamicthrust to linear motor is measured and is started late.The Ye Yunyue of China Zhejiang University professor write in " principle of Linear Motor and application " book of publication in 2000, the test of linear motor dynamicthrust had just been done the simple introduction of " utilizing spring balance to carry out the dynamicthrust test ".
Japan the research of linear motor, develop and utilize aspect be in rank first.Adopted a kind of linear motor dynamicthrust method of testing (can be called the push-pull effort method of testing) of routine at present in Japan, this method of testing almost appears in all scientific papers that relate to the test of linear motor dynamicthrust.Its test philosophy is: linear motor is fixed on the testing table, is fixedly connected with at the mover two ends of linear motor by flexible force transmission parts, the push-pull effort sensor that is connected with the flexible force transmission parts and the power transmission closed hoop that constituted by the damping loads device that the flexible force transmission parts drag.Accompanying drawing 1 has provided the concrete proving installation of realizing above-mentioned push-pull effort method of testing, in this concrete proving installation with the high strength cotton rope as the flexible force transmission parts, with resistance solenoid valve (Brake) as damping loads.One end of push-pull effort sensor (Load cell) is fixed on mover one end of linear motor, the other end connects the high strength cotton rope, the high strength cotton rope is walked around the runner of resistance solenoid valve, walk around the pulley (Pulley) of testing table left end again, receive the other end of linear motor mover and form the closed hoop of a power transmission.Because of linear motor, resistance solenoid valve are fixed on the testing table, the position of therefore regulating pulley left can make annular high strength cotton rope tension; Linear motor feeds continuous current and moves reciprocatingly, the stressed numerical value that this moment, the push-pull effort sensor was reflected promptly is the dynamicthrust (output terminal of push-pull effort sensor connects an oscillograph, to observe the stressed waveform and the size of push-pull effort sensor) of linear motor; Transfer the electric current of big input resistance solenoid valve gradually, make its runner resistance increase the load that has strengthened linear motor; Along with the increase of linear motor load, the numerical value that the moment push-pull effort sensor of lacking of proper care in the linear motor operation is reflected is the dynamicthrust value of tested linear motor.
Accompanying drawing 2 shows be a tested linear motor with above-mentioned determinator, taking off the motor dynamicthrust oscillogram of transferring moment to measure.As can be seen, the dynamicthrust waveform top of measuring is rough and uneven in surface, amplitude is less from this oscillogram.
Be the mensuration precision of checking said determination device, with hand-held pressure transducer to do not apply in the motion of cotton rope tension force constant speed same tested linear motor take off the dynamicthrust of transferring moment test (with hand-held pressure transducer to movement velocity faster motor in that to take off that the dynamicthrust of transferring moment measures be very difficult).The measurement result of finding measurement result and said determination device differs greatly, and the dynamicthrust that determinator is measured is hand-held determination of pressure sensor result's about 43%.
Change in test the size of cotton rope spring tensile force, but the dynamicthrust that under different cotton rope tension force situations, records basically identical as a result.Thereby test is proof further, and the size of cotton rope spring tensile force is to the not influence (not being principal element) of mensuration of dynamicthrust.
Test also further proves, the distance between pulley and runner, and the length that also is the high strength cotton rope is to not influence of measurement result.
Test also proof (by changing different tested linear motors) said determination device is carried out the error that all can there be the same manner in dynamicthrust mensuration to various types of linear motors.
To sum up, the dynamicthrust value that the dynamicthrust value that above-mentioned determinator is measured is actual has bigger error, this error at measurment at the low thrust linear motor (as experiment model machine adopted day SLPMU-025A type linear motor of producing of Benshen's steel motor company, its dynamicthrust value is 25N) go up the more outstanding of performance, how many dynamicthrust values low thrust linear motor (25N is following) almost can not survey with above-mentioned determinator.Owing to there is bigger error at measurment, certainly will cause linear motor " wasting one's talent on a petty job " on dynamicthrust, perhaps under the certain situation of required dynamicthrust value, increase the volume of linear motor, especially small-sized linear motor meaninglessly.
Think, cause the big main cause of said determination directional error to be, determinator is under the static state of inoperative at linear motor, tension force by the tight flexible force transmission parts (high strength cotton rope) of spring has acted directly on (being that the push-pull effort sensor is to be subjected to pulling force) on the push-pull effort sensor under static state, since the buffering inertia effects that linear motor causes when moving reciprocatingly measuring accuracy, promptly said determination device dynamicthrust error at measurment mainly is by resistance solenoid valve and pulley, due to the inertia cushion effect that system the produced influence that push-pull effort sensor and cotton rope are formed.
Summary of the invention
The present invention is directed to the big problem of existing linear motor dynamicthrust determinator dynamicthrust error at measurment, provide a kind of improved, have a linear motor dynamicthrust determinator than the high assay precision.
The present invention adopts following technical scheme to realize: linear motor dynamicthrust determinator, comprise push-pull effort sensor, damping loads device, pulley and around the flexible force transmission parts that are driven the position on pulley and the damping loads device, also comprise a link that has flexible force transmission parts connecting hole and push-pull effort sensor fixed orifice on it, one end of push-pull effort sensor is fixed in the sensor fixed orifice on the link, and the two ends of flexible force transmission parts are separately fixed on the connecting hole on the link.The present invention is on the basis of above-mentioned existing determinator, increased a link, one end of push-pull effort sensor is fixed on this link, the other end is fixed on the mover of linear motor when measuring, and because the two ends of flexible force transmission parts are connected on this link, and be not connected with mover less than direct as existing determinator, make determinator under static state, the flexible force transmission parts tight tension force that forms that jumps does not act directly on the push-pull effort sensor and act on (being that the push-pull effort sensor does not stress) on the link under static state, has effectively eliminated the buffering inertia that produces when linear motor moves reciprocatingly to measuring the influence of precision.
Determinator after the improvement is measured precision and is significantly improved, near the actual dynamicthrust of motor.Accompanying drawing 6 has shown the measured dynamicthrust waveform of determinator after improving, and the change of the top of dynamicthrust waveform is smooth as can be seen, and near square wave, and amplitude significantly increases (same as relatively measured motor); Determinator dynamicthrust after evidence improves is measured precision and is brought up at least 90% from original 43%.
Description of drawings
Fig. 1 is the structural representation of existing linear motor dynamicthrust determinator;
Fig. 2 is the existing measured dynamicthrust waveform of linear motor dynamicthrust determinator;
Fig. 3 is the structural representation of linear motor dynamicthrust determinator of the present invention;
Fig. 4 is the partial enlarged drawing of Fig. 3;
Fig. 5 is a kind of concrete structure synoptic diagram of the link set up;
Fig. 6 is the measured dynamicthrust waveform of linear motor dynamicthrust determinator of the present invention;
Embodiment
Linear motor dynamicthrust determinator, comprise push-pull effort sensor 1, damping loads device 2, pulley 3 and around the flexible force transmission parts 4 that are driven the position on pulley and the damping loads device, also comprise a link 5 that has flexible force transmission parts connecting hole and push-pull effort sensor fixed orifice on it, one end of push-pull effort sensor 1 is fixed in the sensor fixed orifice on the link, and the two ends of flexible force transmission parts are separately fixed on the connecting hole on the link.
The push-pull effort sensor can be selected multiple known product for use, as U.S. P51 series SS1 type pressure transducer product, the Japanese AIKOH AEF/ANF of company series of products, Nidec SHIMPO pull and push dynamometer FGC/FGM series of products, the Hunan aerospace CZL-YB-007 of Scientific and Technical Industry Co., Ltd shaft type force cell series.The optional resistance solenoid valve of the prior art of damping loads device also can adopt a pulley and in pulley edge bicycle brake rubber block brake gear is set, and by the bicycle brake rubber block pulley is applied resistance to play the effect of linear motor damping loads.The flexible force transmission parts can still be selected high strength cotton rope of the prior art for use, also can select the rope of other material for use, as finer wire, nylon cotton rope, accurate chain etc.
During mensuration, the other end of push-pull effort sensor and the mover of linear motor are fixed, and its output can be connected with oscillograph, to show the stressing conditions of push-pull effort sensor.Linear motor, damping loads (resistance solenoid valve or have the pulley of brake rubber block) are fixed on the test board, the flexible force transmission parts are walked around the runner of pulley and resistance solenoid valve or are had the pulley of brake rubber block, the position of regulating pulley is jumped tightly the flexible force transmission parts, can begin this moment to measure.
Claims (2)
1, a kind of linear motor dynamicthrust determinator, comprise push-pull effort sensor (1), damping loads device (2), pulley (3) and around the flexible force transmission parts (4) that are driven the position on pulley and the damping loads device, it is characterized by: also comprise a link (5) that has flexible force transmission parts connecting hole and push-pull effort sensor fixed orifice on it, one end of push-pull effort sensor (1) is fixed in the sensor fixed orifice on the link, and the two ends of flexible force transmission parts are separately fixed on the connecting hole on the link.
2, linear motor dynamicthrust determinator as claimed in claim 1, it is characterized by: link (5) is a batten, flexible force transmission parts connecting hole is opened the two ends at batten, batten middle part have one with the plate that is bent downwardly of batten one, have push-pull effort sensor fixed orifice on the twisted plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410012174 CN1259555C (en) | 2004-03-05 | 2004-03-05 | Linear electric machine trust measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410012174 CN1259555C (en) | 2004-03-05 | 2004-03-05 | Linear electric machine trust measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1560579A true CN1560579A (en) | 2005-01-05 |
| CN1259555C CN1259555C (en) | 2006-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410012174 Expired - Fee Related CN1259555C (en) | 2004-03-05 | 2004-03-05 | Linear electric machine trust measuring device |
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| CN (1) | CN1259555C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101183141B (en) * | 2007-11-23 | 2010-06-02 | 哈尔滨泰富实业有限公司 | Straight line motor multifunctional dynamic test-bed |
| CN101718607B (en) * | 2009-11-05 | 2011-04-13 | 浙江大学 | Device for measuring push-pull force output by rotating hydraulic cylinder |
| CN103424222A (en) * | 2013-08-05 | 2013-12-04 | 西南交通大学 | Testing device for multidirectional dynamic force of medium and small sized linear motors |
| CN103926031A (en) * | 2014-04-24 | 2014-07-16 | 中南大学 | Thrust detection method and system for linear motor |
| CN105784232A (en) * | 2016-03-24 | 2016-07-20 | 北京航空航天大学 | Micro thrust measurement device with damping system |
-
2004
- 2004-03-05 CN CN 200410012174 patent/CN1259555C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101183141B (en) * | 2007-11-23 | 2010-06-02 | 哈尔滨泰富实业有限公司 | Straight line motor multifunctional dynamic test-bed |
| CN101718607B (en) * | 2009-11-05 | 2011-04-13 | 浙江大学 | Device for measuring push-pull force output by rotating hydraulic cylinder |
| CN103424222A (en) * | 2013-08-05 | 2013-12-04 | 西南交通大学 | Testing device for multidirectional dynamic force of medium and small sized linear motors |
| CN103424222B (en) * | 2013-08-05 | 2015-06-03 | 西南交通大学 | Testing device for multidirectional dynamic force of medium and small sized linear motors |
| CN103926031A (en) * | 2014-04-24 | 2014-07-16 | 中南大学 | Thrust detection method and system for linear motor |
| CN103926031B (en) * | 2014-04-24 | 2016-01-20 | 中南大学 | The thrust measurement method of linear electric motors and detection system |
| CN105784232A (en) * | 2016-03-24 | 2016-07-20 | 北京航空航天大学 | Micro thrust measurement device with damping system |
| CN105784232B (en) * | 2016-03-24 | 2019-05-03 | 北京航空航天大学 | A kind of device for measuring micro-thrust with damping system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1259555C (en) | 2006-06-14 |
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