CN1171076C - Virtual test system of permanent-magnet DC motor - Google Patents
Virtual test system of permanent-magnet DC motor Download PDFInfo
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- CN1171076C CN1171076C CNB001212729A CN00121272A CN1171076C CN 1171076 C CN1171076 C CN 1171076C CN B001212729 A CNB001212729 A CN B001212729A CN 00121272 A CN00121272 A CN 00121272A CN 1171076 C CN1171076 C CN 1171076C
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Abstract
The present invention relates to virtual testing equipment of a direct-current permanent magnet motor, which is composed of a set of software systems and a set of hardware systems. A user can control the operation of the virtual testing equipment by operating a graphic panel of a computer to complete all testing functions. Because the techniques, such as the theory of parameter estimation, computer engineering, etc., are applied, the accuracy of the virtual testing equipment is very high, and a motor only needs to be in no-load operation. Use is very convenient, functions are very powerful and perfect, and the functions of majority of (more than twenty kinds of) instruments and meters for testing the direct-current permanent magnet motor can be replaced basically.
Description
Technical field:
The present invention relates to a kind of permanent magnet direct current motor virtual test equipment and method of testing.
Background technology:
Conventional 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, survey armature inductance and will use inductometer, the survey magnetic flux will be with fluxmeter etc.
Measuring the mechanical property of motor and operating characteristic must be with ergometer or torque meter, and motor must load running, and high ergometer or torque meter structure and the testing complex of precision, the cost height.
Some physical quantity of motor is difficult to maybe can't test with conventional testing tool and instrument, as: friction factor etc.
Summary of the 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 permanent magnet direct current motor with a kind of equipment; Without ergometer, motor no-load running.
Concrete test event has:
Can measure the product export check data: unloaded data (rotating speed, electric current), rating data (rotating speed, electric current, output power, efficient), stall data (changeing distance, electric current);
Can measure all quiet, dynamic dynamo-electric parameter: armature resistance, armature inductance, armature moment of inertia, friction factor;
Can measure all quiet, dynamic perfromance: mechanical property, characteristics of output power, efficiency characteristic, current characteristics; Some constant and Main physical amount: mechanical time constant, electric time are normal, armature voltage, air-gap flux and air gap flux density (number of pole-pairs, conductor number and the magnet steel size of input motor can obtain);
Can carry out certain fault detection and diagnosis.
Method of testing of the present invention
The first step: the motor zero load places on the support.Make the logical direct current of motor rotate operational computations machine graphics panel " input data " button
Second step: operational computations machine graphics panel " is determined " button.
The 3rd step: operational computations machine graphics panel START button.
The 4th step: data according to demand, operational computations machine graphics panel " characteristic demonstration " 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, powerful and complete, whole computer operation, and is easy to use, simple in structure, 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 serial communication module, data/pretreatment module, parameter identification module, commutation ripple Fourier transform module, motor Physical Quantity Calculation and characteristic Simulation module.Its function be to image data gather, processing, identification, computing and output, thereby make them can replace hardware to finish many test functions, this is the key component of whole test system.
Principle and effect to each module application describes below.
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.
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 RS-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.
Data preprocessing module: the data of gathering are carried out processing such as interpolation.
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.Pick out the parameter of motor dynamic model earlier, the Parameters Transformation with model is the parameter of motor again: armature inductance and resistance.Commutation ripple Fourier transform module: motor steady-state current commutation ripple is carried out Fourier transform obtain motor speed, utilize parameter that the rotating speed obtained and identification come out again remaining dynamo-electric calculation of parameter of motor come out (moment coefficient, friction factor, moment of inertia).
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 characteristics by its dynamic and static model emulation.
Owing to all have certain mapping relations between the characteristic of motor and fault and its dynamo-electric parameter, therefore can carry out certain fault detection and diagnosis according to the theory of parameter identification result and relevant motor.
Above data preprocessing module, parameter identification module, commutation ripple Fourier transform module, motor Physical Quantity Calculation and characteristic Simulation module.By C++ Builder 4.0 exploitations.
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 driving circuit, signal conditioning circuit and three modules of data acquisition circuit.
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, controlled of the switching of external direct supply two-way voltage by the voltage handover module.
The signal condition system: native system has adopted electric current and voltage two paths.At the current conversion passage, adopted the current/voltage-converted module to realize current signal is converted to voltage signal.At the voltage transitions passage,, adopt the ratio attenuation module to realize the adjustment of voltage signal according to the range of A/D converter.
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, signal condition 2, data acquisition, control and analyzes 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.
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 isolation 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, single-chip microcomputer-5 pairs of data of PC communication module are carried out communication, 6 pairs of data of data preprocessing module are carried out filtering etc. handles, above-mentioned data are through the identification and the conversion of parameter identification module and 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 (6)
1. the method for testing of a permanent magnet direct current motor, this method is as long as motor moves under zero load and can finish whole tests, it comprises cover software systems and a cover hardware system, said cover software systems comprise single-chip data acquisition, single-chip microcomputer-PC communication, the data pre-service, parameter identification and commutation ripple Fourier transform, the a plurality of modules of motor Physical Quantity Calculation and characteristic Simulation, a said cover hardware system comprises power drive, signal condition and data acquisition, control and analyze three subsystems, it is characterized in that said parameter identification module in the software is to use the parameter that square pulse converter technique and least square method of recursion pick out the motor dynamic model earlier in the parameter estimation method, the Parameters Transformation with model is the dynamo-electric parameter of motor again.
2. as the method for testing of permanent magnet direct current motor as described in claims 1, it is characterized in that said commutation ripple Fourier transform module in the software is that commutation ripple to the motor steady-state current carries out Fourier transform and obtains motor speed, utilizes the rotating speed of having obtained to calculate remaining dynamo-electric parameter of motor with the parameter that identification is come out by its relevant formula again.
3. as the method for testing of permanent magnet direct current motor as described in claims 1, the Physical Quantity Calculation and the characteristic Simulation module that it is characterized in that said motor in the software are according to the dynamo-electric parameter of obtaining motor, are calculated required physical quantity and are obtained various dynamic and static characteristics by its dynamic and static model emulation by its relevant formula again.
4. the testing apparatus of a permanent magnet direct current motor, it comprises cover software systems and a cover hardware system, said cover software systems comprise single-chip data acquisition, parameter identification and a plurality of modules such as commutation ripple Fourier transform, motor Physical Quantity Calculation and characteristic Simulation, said a plurality of software module be to the data of gathering handle, identification, computing and output, replace hardware to finish the test whole to motor; A said cover hardware system comprises power drive, signal condition and data acquisition, control and analyzes three subsystems, said three hardware modules have been finished the input of motor voltage, the collection of voltage and electric current, conditioning, conversion and transmission, it is characterized in that said parameter identification module in the software is to use the parameter that square pulse converter technique and least square method of recursion pick out the motor dynamic model earlier in the parameter estimation method, the Parameters Transformation with model is the dynamo-electric parameter of motor again.
5. as claims 4 described permanent magnet direct current motor testing apparatuss, it is characterized in that said commutation ripple Fourier transform module in the software is that commutation ripple to the motor steady-state current carries out Fourier transform and obtains motor speed, utilizes the rotating speed of having obtained to calculate remaining dynamo-electric parameter of motor with the parameter that identification is come out by its relevant formula again.
6. as claims 4 described permanent magnet direct current motor testing apparatuss, the Physical Quantity Calculation and the characteristic Simulation module that it is characterized in that said motor in the software are according to the dynamo-electric parameter of obtaining motor, are calculated required physical quantity and can be obtained various dynamic and static characteristics by its dynamic and static model emulation by its relevant formula again.
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 CN1338617A (en) | 2002-03-06 |
| CN1171076C true 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) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| TWI551007B (en) * | 2015-03-13 | 2016-09-21 | 光寶電子（廣州）有限公司 | Servo motor system and operating 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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2000
- 2000-08-11 CN CNB001212729A patent/CN1171076C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1338617A (en) | 2002-03-06 |
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Granted publication date: 20041013 Termination date: 20120811 |