CN1338617A - Virtual test system of permanent-magnet DC motor - Google Patents
Virtual test system of permanent-magnet DC motor Download PDFInfo
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- CN1338617A CN1338617A CN 00121272 CN00121272A CN1338617A CN 1338617 A CN1338617 A CN 1338617A CN 00121272 CN00121272 CN 00121272 CN 00121272 A CN00121272 A CN 00121272A CN 1338617 A CN1338617 A CN 1338617A
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Abstract
A virtual test system for permanent-magnetic DC motor is composed of a software system and a hardware system. Operating the graphic panel of computer can control the running of said virtual device to perform all test functions. Its advantages include high precision, complete test function, and convenient test.
Description
The present invention relates to a kind of permanent magnet direct current motor virtual test equipment and method of testing.
Traditional direct current motor measuring technology weak point:
1. Chang Gui testing tool and instrument function are single, can't finish the multiple test function of motor with a kind of instrument or instrument.As: survey rotating speed and will use tachometer gage, survey armature resistance and will use Wheatstone bridge, the survey armature inductance will be used inductometer, and the survey magnetic flux will be with fluxmeter etc.
2. the mechanical property, operating characteristic of measuring motor must be with ergometer or torque meters, and motor must load running.And high ergometer or torque meter structure and the testing complex of precision, the cost height.
3. some physical quantity of motor is difficult to maybe can't test with conventional testing tool and instrument, as: friction factor etc.
Purpose of the present invention:
Be in order to solve the deficiency of above-mentioned traditional test technology, a kind of virtual test system of permanent-magnet DC motor to be provided.Promptly finish multiple (kind more than 20) test function to motor with a kind of equipment; Without ergometer, motor no-load running.
Concrete test event has:
1. can measure all quiet, dynamic dynamo-electric parameter: armature resistance, armature inductance, armature moment of inertia, friction factor
2. can measure all quiet, dynamic perfromance: mechanical property, operating characteristic (speed characteristic, efficiency characteristic, torque characteristics), starting characteristic.
3. can measure some constant and Main physical amount: mechanical time constant, electrical time constant
Distance, rated speed, output rating, efficient, armature voltage, air-gap flux, air gap flux density (number of pole-pairs of known motor, conductor number and magnet steel size) are changeed in no-load speed, startup.
4. can carry out conventional fault detects and diagnosis; 1).The armature winding short circuit; 2).Open circuit armature winding; 3).Brush wear, brush pressure deficiency; 4).Magnet steel magnetic is defective etc.
Method of testing of the present invention
The first step: the motor zero load places on the support.The logical direct current of motor is rotated, and operational computations machine graphics panel " pressurization " button can apply a constant voltage earlier to motor, after add a step voltage.
Second step: operational computations machine graphics panel " collection " button.
The 3rd step: operational computations machine graphics panel " is debated knowledge " button.
The 4th step: data according to demand, operational computations machine graphics panel button is exported various data and family curve.
Advantage of the present invention is to need not ergometer, and as long as motor is in no-load running.Register face operation, easy to use, simple in structure, powerful and complete, test speed is fast, precision is high, cost is low.
The present invention is achieved in that
This permanent magnet direct current motor testing apparatus has cover software systems and a cover hardware system.The main theory that it is used is parameter identification and the theory of the commutation ripple being carried out Fourier transform.
One. replace hardware to finish many test functions with software systems
Software systems comprise: single-chip data acquisition module, single-chip microcomputer-PC communication module, data are given processing module, parameter identification module, commutation ripple Fourier transform module, motor Physical Quantity Calculation and characteristic Simulation module, fault detection and diagnosis module.Its function is that knowledge, computing and output are handled, debated to image data, thereby makes them can replace hardware to finish many test functions, and this is the key component of whole test system.
Principle and effect to each module application describes below.
1. single-chip data acquisition module: adopt the mode of interrupting to gather the stable state and the dynamic data of electric moter voltage, electric current, adopt assembly language to write.
2. single-chip microcomputer-PC communication module: the voltage of gathering, the stable state and the dynamic data of electric current are transferred to PC from single-chip microcomputer by the RSC-232 serial ports, and the communication program of single-chip microcomputer realizes that with assembly language the communication program of PC is realized with C++Builder 4.0.
3. data are given processing module: the data of gathering are carried out processing such as filtering, interpolation.
4. parameter identification module: in the parameter estimation method, use the parameter that square pulse converter technique and least square method of recursion come direct identification continuous system.Identify the parameter of motor dynamic model earlier, the Parameters Transformation with model is the dynamo-electric parameter of motor again: armature inductance and resistance.
5. commutation ripple Fourier transform module: motor steady-state current commutation ripple is carried out Fourier transform obtain motor speed, utilize the rotating speed of having obtained again and identify the parameter of coming remaining dynamo-electric calculation of parameter of motor come out (moment coefficient, friction factor, moment of inertia).
6. the Physical Quantity Calculation of motor and characteristic Simulation module:, can calculate required physical quantity by its relevant formula according to the dynamo-electric parameter of obtaining motor; Can obtain various dynamic and static characteristic characteristics by its dynamic and static model emulation.
7. fault detection and diagnosis module: owing to all have certain mapping relations between the characteristic of motor and fault and its dynamo-electric parameter, therefore can utilize artificial network and method of expert system to realize the detection and the diagnosis of its fault according to the theory of parameter identification result and relevant motor.
More than 3-7 modules by C++Builder 4.0 exploitation.
Two. hardware system has been finished the input of motor voltage, the collection of voltage, electric current and transmission
One cover hardware system comprises power drive, signal condition and data acquisition, control and analyzes three subsystems.
1. power driven system:
According to this equipment principle, at first need motor is added a constant voltage, and then add a step voltage.Adopted the two paths solution at above-mentioned two voltage native systems, and by the voltage handover module, controlled the switching of external direct supply to two-way voltage, transformation isolation module and electric current amplification module have all been adopted in every road.
2. signal condition system:
Native system has adopted electric current and voltage two paths.
At the current conversion passage, adopted current/voltage-converted module MAX472 to realize current signal is converted to voltage signal.
At the voltage transitions passage,, adopt ratio attenuation module CA3140 to realize the adjustment of voltage signal according to the range of A/D converter.
All be provided with filtration module MAX291 at two paths in addition, to filter by measuring the high-frequency signal that noise is introduced.Simulating signal is nursed one's health.
3. data acquisition, control and analytic system:
Native system has adopted electric current and voltage two paths.With the simultaneity that guarantees that voltage and current is gathered.
By the real-time collection of being responsible for data based on the data acquisition module of single-chip microcomputer, by serial ports data transmission is arrived PC then, by data analysis module and Data Control module data are analyzed and controlled.Export demonstration by data disaply moudle
Fig. 1 is the calcspar of the hardware system of the embodiment of the invention.
Fig. 2 is the calcspar of the software systems of the embodiment of the invention.
The invention will be further described below in conjunction with embodiment shown in the drawings:
Fig. 1 is the overall calcspar of hardware system of permanent magnet direct current motor virtual test equipment.It comprises power drive 1 and data acquisition 2, controls and analyze 3 three subsystems.
Direct supply in the power driven system 1 provides DC voltage, also passes through the voltage handover module to motor, controls the switching of external direct supply to two-way voltage, and transformation isolation module and electric current amplification module have all been adopted in every road.
Electric current and voltage two paths have been adopted in the signal condition system 2.Current/voltage-converted module and ratio attenuation module have been adopted respectively.All be provided with filtration module at two paths in addition, simulating signal is nursed one's health.
Electric current and voltage two paths have been adopted in data acquisition, control and the analytic system 3.
Be responsible for the real-time collection of data by single-chip microcomputer, then by serial ports data transmission to PC, by data analysis module and Data Control module data are analyzed and are controlled.Export demonstration by data disaply moudle.
In addition, signal S is transferred to power drive 1 with of the switching of control direct supply to two-way voltage.
Fig. 2 is the software systems calcspar of permanent magnet direct current motor virtual test testing of equipment principle and process.It by 4 pairs of data of single-chip data acquisition module gather, 5 pairs of data of single-chip microcomputer one PC communication module are carried out communication, data give that 6 pairs of data of processing module are carried out processing such as filtering, above-mentioned data are known and conversion through parameter identification module and debating of commutation ripple Fourier transform module 7, can obtain whole parameters of motor.Whole parameters by motor can get each physical quantity of motor and characteristic through Physical Quantity Calculation and characteristic Simulation module 8.Whole parameters by motor can detect the fault of motor and diagnose through fault detection and diagnosis module 9.
Claims (4)
1. permanent magnet direct current motor testing apparatus and method of testing is characterized in that having a cover hardware system and cover software systems.
2. press claims 1 described permanent magnet direct current motor testing apparatus and method of testing, it is characterized in that said cover software systems comprise: single-chip data acquisition module, single-chip microcomputer-PC communication module, data are given processing module, parameter identification and commutation ripple Fourier transform module, motor Physical Quantity Calculation and characteristic Simulation module, fault detection and diagnosis module.
3. press claims 1 described permanent magnet direct current motor testing apparatus and method of testing, it is characterized in that a said cover hardware system comprises power drive, signal condition and data acquisition, control and analyzes three subsystems.
4. press claims 1 described permanent magnet direct current motor testing apparatus and method of testing, it is characterized in that empty load of motor, not dynamometer machine.As long as operational computations machine graphics panel, i.e. whole test functions are finished in the operation of may command virtual unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001212729A CN1171076C (en) | 2000-08-11 | 2000-08-11 | Virtual test system of permanent-magnet DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001212729A CN1171076C (en) | 2000-08-11 | 2000-08-11 | Virtual test system of permanent-magnet DC motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1338617A true CN1338617A (en) | 2002-03-06 |
| CN1171076C CN1171076C (en) | 2004-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001212729A Expired - Fee Related CN1171076C (en) | 2000-08-11 | 2000-08-11 | Virtual test system of permanent-magnet DC motor |
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| CN (1) | CN1171076C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829910A (en) * | 2011-06-13 | 2012-12-19 | 上海电驱动有限公司 | Wide voltage energy-saving type permanent magnet motor power measuring system |
| CN105300582A (en) * | 2015-11-20 | 2016-02-03 | 成都科瑞信科技有限责任公司 | DC electric power power-measuring system based on signal linear filtering processing |
| CN105978428A (en) * | 2015-03-13 | 2016-09-28 | 光宝科技股份有限公司 | Servo motor system and control method thereof |
| CN108267692A (en) * | 2018-02-09 | 2018-07-10 | 唐山英通科技有限公司 | permanent magnet motor uncontrollable power generation test system based on L-abview and test method thereof |
-
2000
- 2000-08-11 CN CNB001212729A patent/CN1171076C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829910A (en) * | 2011-06-13 | 2012-12-19 | 上海电驱动有限公司 | Wide voltage energy-saving type permanent magnet motor power measuring system |
| CN102829910B (en) * | 2011-06-13 | 2014-12-10 | 上海电驱动股份有限公司 | Wide voltage energy-saving type permanent magnet motor power measuring system |
| CN105978428A (en) * | 2015-03-13 | 2016-09-28 | 光宝科技股份有限公司 | Servo motor system and control method thereof |
| CN105978428B (en) * | 2015-03-13 | 2019-07-26 | 光宝科技股份有限公司 | servo motor system and control method thereof |
| CN105300582A (en) * | 2015-11-20 | 2016-02-03 | 成都科瑞信科技有限责任公司 | DC electric power power-measuring system based on signal linear filtering processing |
| CN108267692A (en) * | 2018-02-09 | 2018-07-10 | 唐山英通科技有限公司 | permanent magnet motor uncontrollable power generation test system based on L-abview and test method thereof |
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| Publication number | Publication date |
|---|---|
| CN1171076C (en) | 2004-10-13 |
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Granted publication date: 20041013 Termination date: 20120811 |