CN102645634B - Vehicle driving motor test stand data acquisition system based on LabVIEW - Google Patents

Vehicle driving motor test stand data acquisition system based on LabVIEW Download PDF

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CN102645634B
CN102645634B CN201210125218.0A CN201210125218A CN102645634B CN 102645634 B CN102645634 B CN 102645634B CN 201210125218 A CN201210125218 A CN 201210125218A CN 102645634 B CN102645634 B CN 102645634B
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module
test
data
data acquisition
bed
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CN102645634A (en
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宋强
吕晨光
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北京理工大学
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Abstract

The invention relates to a vehicle driving motor test stand data acquisition system based on LabVIEW, which is used for acquiring data in a vehicle driving motor test stand. The data acquisition system comprises the test stand and a data acquisition system. The test stand is used for realizing test for a vehicle driving motor, and the data acquisition system matches with the test stand and consists of a sensor, a data acquirer and a computer with a LabView development platform. The vehicle driving motor test stand data acquisition system can guarantee that stored test data cannot be lost when acquired at a high speed and waveforms are displayed in real time, callback and frequency-domain of data of the waveforms are realized after a test, and a test report in a fixed format is generated. In addition, the vehicle driving motor test stand data acquisition system can be used for evaluating performances of an electric vehicle with hybrid energy sources and optimizing a control strategy of a hybrid energy resource management system, is used as a meter display board and the like of the electric vehicle with the hybrid energy sources and a pure electric vehicle, and is a currently available electric vehicle data acquisition system with complete functions.

Description

A kind of automobile drive motor test-bed data acquisition system (DAS) based on LabVIEW

Technical field

The present invention relates to automobile drive motor system reliability correlative technology field, exactly relate to a kind of automobile drive motor test-bed data acquisition system (DAS) based on LabVIEW.

Background technology

Since entering 21 century, the energy and environment are increasing on the impact of human lives, social development, and Development of EV has become countries in the world government development auto industry, improved the inevitable choice of national economy whole competitiveness.Automobile drive motor is the core component of electric automobile, and its performance has determined the quality of electric automobile.But at present for evaluating the bench test of driving motor for electric automobile performance, also have that sampling rate is not high, synchronism is bad, the incomplete problem of function, and for the electric automobile using various power accumulators as power source, the signal demands such as electric current during its work, voltage, temperature and SOC remain in safe perform region, so can reflect accurately in real time that the survey instrument of its numerical value seems particularly important; Therefore, be necessary to develop one can accurate evaluation automobile drive motor performance data acquisition system (DAS).In brief, the raising of data acquisition technology is significant for accurate evaluation automobile drive motor performance.

Traditional measuring method is along with the increase of measurand and need the quantity of information of analyzing stored to increase to seem loaded down with trivial details or unable to do what one wishes, be not suitable for the measurement to the composite electric automobile of multi power source.One of founding of LabVIEW (laboratory virtual instrument the integration environment) Shi You American National instrument company (National Instruments, NI) powerful and instrument and analysis software application development tool flexibly.LabVIEW is a universal programming system, it not only can complete general mathematical operation and logical operation and input/output function, it is also with special built-in function and developing instrument for data acquisition and instrument control, especially also with professional mathematical analysis routine package, substantially can meet complicated engineering calculation and analyze requirement.

2002, Zhejiang University applied for the patent of invention " integrated vibration signal complete period equal phase high speed synchronous data collection system " that application number is 02145406.X.This patent comprises: the modulate circuit being connected with sensor, another termination analog to digital conversion circuit of modulate circuit, through push-up storage, connect isa bus, output termination key signal treatment circuit, after frequency multiplication, connect mould/number conversion circuit, read-write control circuit is connected with the storer of mould/number conversion circuit and first in first out respectively.This invention is integrated in modulate circuit, key signal treatment circuit, A/D change-over circuit on a circuit board, forms the module of a telotism, stability and the reliability of the operation of raising system.

2006, Tongji University has applied for the patent of invention " vehicle data acquisition system for automobile automatic speed transmission " that application number is 200610027035.X, this patent is passed through conversion interface circuit by the output signal of electrical control unit of automatic transmission of automobile, input to analog input mouth and the digital input port of data collecting card, industrial computer is controlled data collecting card and is carried out collection and the storage of data, adopt and insert the wire harness signal lead-out mode of surveying formula, avoided the destruction to original-pack wire harness, acquisition system has the feature of real-time.

2008, Biyadi Co Ltd applied for the utility model patent that application number is 200820212359.5 " a kind of high-speed data acquistion system ", this patent comprises the AD conversion unit of carrying out data interaction, logic control element, high-speed interface unit and host computer, described AD conversion unit is converted to digital signal by the simulating signal collecting, and digital data transmission is processed to logic control element, after processing, be transferred to high-speed interface unit, through high-speed interface unit, data layout is carried out after standard, finally be sent to host computer, finally completed data acquisition at a high speed.

2009, Shanghai University Of Engineering Science has applied for that application number is 200920210952.0 utility model patents " a kind of vehicle data acquisition systems ", this patent comprises vehicle-mounted data treating apparatus, vehicle power, driver's physiologic information harvester, vehicle information collecting device and traffic environment information collecting device, and described vehicle power, driver's physiologic information harvester, vehicle information collecting device and traffic environment information collecting device are all connected with vehicle-mounted data treating apparatus.This patent, can alternate analysis and exploitation driver safety management and screening, driver's active safe driving device and road safety design and assessment in conjunction with the vehicle-mounted image data of vehicle, view data and driver dynamic physiology electrocardiogram (ECG) data.

2011, SanXia University applied for the utility model patent that application number is 201120000288.4 " a kind of Test Data Acquisition System ", and the vasculum in this patent comprises a plurality of capture cards, converter and stabilized voltage supply, and vasculum outside is provided with a plurality of sockets; Output end of stabilized voltage supply mouth is connected with the binding post of socket, and sensor is connected with socket, and capture card port is connected with socket; Then the first parallel connection of a plurality of capture cards is connected in series with converter, and converter is connected with computing machine by Serial Port Line.This patent, in Real-time Collection test figure, strengthens the usable range of acquisition system, reduces costs simultaneously.

2010, South China Science & Engineering University has applied for the utility model patent that application number is 201020563826.6 " the electric automobile data acquisition system (DAS) based on LabVIEW ", and this patent comprises sensor, filtering circuit, the data acquisition unit connecting in turn and has the computing machine of LabVIEW development platform.This system can realize battery current, voltage, temperature, dump energy, super capacitor electric current, voltage, dump energy, the signal of motor speed, temperature automatically gathers, analyzes, shows and stores, can and optimize the control strategy of compound energy management system for the performance of evaluating combined energy electric vehicle, as the instrument display board of compound energy electric automobile and pure electric automobile etc., be the electric automobile data acquisition system (DAS) that current function is more complete.

2011, the utility model patent " a kind of vehicle carried data collecting system " that scientific and technological Trade Co., Ltd. has applied for that application number is 201120042346.x extensively converges in Zhuzhou, this patent comprises: LPC2388 chip, GPS locating module and GPRS communication module, wherein: described GPS locating module is all connected with described LPC2388 chip with GPRS communication module.System communicates by GPRS communication network and Surveillance center, and GPRS communication network is to take packet-switch technology as basis, adopts the efficient data network of IP data network protocol, so can make to carry out between this system and Surveillance center real-time Data Transmission.

Although above-mentioned patent application document or patent document have related to the test-bed data acquisition system (DAS) based on virtual technology more or less, are all the data acquisition system (DAS)s of carrying out for single mechanical organ or electronic component; And do not relate to the exploitation of data acquisition system (DAS) of the test-bed of the automobile drive motor jointly being formed by mechanical part and electronic unit that need to gather mass data; According to the applicant understood, for the data acquisition system (DAS) of the test-bed of the automobile drive motor being combined by mechanical part and electronic unit, study both at home and abroad less, the data acquisition system (DAS) of the test-bed of perfect automobile drive motor without comparison also at present.

Summary of the invention

For solving the problems of the technologies described above, the present invention proposes a kind of automobile drive motor test-bed data acquisition system (DAS) based on LabVIEW.

The present invention proposes a kind of automobile drive motor bench test data acquisition system (DAS) based on LabVIEW.Wherein this system can realize by the data base administration of measured motor information, before test, system is carried out to on-line proving, synchronous acquisition to the three-phase alternating voltage/electric current of the DC bus-bar voltage/electric current of electric machine controller input end and output terminal in test, in the time of can guaranteeing high speed acquisition, store test figure and do not lose several phenomenons real-time display waveform, after test, adjust back Wave data and carry out frequency-domain analysis and generation test report.

Specifically, the invention provides a kind of automobile drive motor test-bed data acquisition system (DAS) based on LabVIEW, for the test-bed at automobile drive motor, carry out data acquisition, wherein automobile drive motor test-bed comprises: rectifier transformer, power supply box, tested motor and electric machine controller, electric dynamometer and Dynamometer Control device and torque meter, wherein power supply box is respectively electric machine controller by rectifier transformer and electric dynamometer is inputted required operating voltage, electric dynamometer is connected with tested motor coaxle, for tested motor provides controlled load, according to the rotational speed and torque of setting operating conditions dynamometer machine and tested motor, data acquisition system (DAS) comprises at least one voltage sensor, at least one current sensor, signal condition module, PXI bus data acquisition module and the computing machine with LabVIEW development platform, wherein said voltage sensor and/or current sensor detect voltage and/or the electric current of electric machine controller in test-bed, signal condition module gathers simulating signal and the torque simulating signal in torque meter in described voltage sensor and/or current sensor and converts it to the digital signal that data acquisition module can be identified, PXI bus data acquisition module sends the digital signal of uploading in the computing machine with LabVIEW development platform, the computing machine wherein with LabVIEW development platform is processed the digital signal of uploading, it is characterized in that: in described computing machine, there is data management module, demarcating module, synchronization module, waveform callback module, frequency-domain analysis module and test report module, wherein data management module for the data that bus data acquisition module is uploaded to computing machine add, deletion, modification and query manipulation, demarcating module and data management module carry out data interaction, for the mode by fitting a straight line, the data after operating are demarcated to avoid occurring the several phenomenons of losing of test figure, synchronization module and demarcating module carry out data interaction, for setting the public clock signal of a plurality of equipment, so that a plurality of device synchronization image data, waveform callback module and synchronization module carry out data interaction, for the one or more waveforms that carry out in gathered data being adjusted back to also outer showing to user according to user's input selection, frequency-domain analysis module and synchronization module carry out data interaction, for the data that gather being carried out to time domain and/or frequency-domain analysis on time domain and frequency domain, test report module and frequency-domain analysis module are carried out data interaction, for the result of test is shown outward to user with the output format of fixing, above-mentioned each module of its Computer is by external user trigger action.

Wherein said voltage sensor and/or current sensor detect the DC bus-bar voltage/electric current of electric machine controller input end and the three-phase alternating voltage/electric current of electric machine controller output terminal.

Wherein the equation of linear regression of the linear fit in demarcating module is:

y=k×x+b

The tested value of x-wherein, y-match value, k-calibration coefficient, b-demarcates constant;

And calibration coefficient k=(declared working condition calibration value-odd-job condition calibration value)/(declared working condition measured value-odd-job condition measured value);

Demarcate constant b=odd-job condition calibration value-calibration coefficient * odd-job condition measured value;

Wherein the calibration value under above-mentioned declared working condition and the calibration value under odd-job condition draw in advance by bench test;

Wherein waveform callback module can also be amplified or translation for the waveform of playback being carried out to part.

Wherein frequency-domain analysis module can also be for carrying out power spectral-density analysis to test figure.

Compared with prior art, beneficial effect of the present invention shows: the automobile drive motor test-bed data acquisition system (DAS) in the present invention is considered actual motion environment and the operating mode of automobile drive motor, and by the modular structure providing in LabVIEW, management, storage and the outer aobvious module of data have systematically been designed, effectively reduce test period, reduce experimentation cost, shorten the research and development of products cycle.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme in embodiments of the invention, below the accompanying drawing of required use during following embodiment is described is briefly described.

Fig. 1 is the system diagram according to testboard bay of the present invention;

Fig. 2 is the functions of modules block diagram in the data acquisition system (DAS) according to the present invention;

Fig. 3 and 4 is the schematic diagram of the data management module in the data acquisition system (DAS) according to the present invention.

Embodiment

Accompanying drawing below in conjunction with the technical scheme in the embodiment of the present invention, is clearly and completely described, and those of ordinary skills, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.

As shown in Figure 1, its embodiment is as follows for the system diagram of the automobile drive motor test-bed in the present invention:

A kind of automobile drive motor test-bed data acquisition system (DAS) based on LabVIEW, for the test-bed at automobile drive motor, carry out data acquisition, wherein automobile drive motor test-bed comprises: rectifier transformer, power supply box, tested motor and electric machine controller, electric dynamometer and Dynamometer Control device and torque meter, wherein power supply box is respectively electric machine controller by rectifier transformer and electric dynamometer is inputted required operating voltage, electric dynamometer is connected with tested motor coaxle, for tested motor provides controlled load, according to the rotational speed and torque of setting operating conditions dynamometer machine and tested motor, data acquisition system (DAS) comprises at least one voltage sensor, at least one current sensor, signal condition module, PXI bus data acquisition module and the computing machine with LabVIEW development platform, wherein said voltage sensor and/or current sensor detect voltage and/or the electric current of electric machine controller in test-bed, signal condition module gathers simulating signal and the torque simulating signal in torque meter in described voltage sensor and/or current sensor and converts it to the digital signal that data acquisition module can be identified, PXI bus data acquisition module sends the digital signal of uploading in the computing machine with LabVIEW development platform, the computing machine wherein with LabVIEW development platform is processed the digital signal of uploading.

In described computing machine, there is data management module, demarcating module, synchronization module, waveform callback module, frequency-domain analysis module and test report module; Wherein the function of above-mentioned each functional module is illustrated by accompanying drawing 2.Before test-bed of the present invention is tested automobile drive motor, first system is carried out to online demarcation to avoid the impact on test accuracy of initial value in sensor and functional module.After demarcation completes, test-bed starts to carry out bench test and data acquisition system (DAS) starts the data in acquisition test.Specifically, be that the three-phase alternating voltage/electric current of the DC bus-bar voltage/electric current of electric machine controller input end and output terminal is carried out to synchronous acquisition.Then the data that collect are uploaded to the computing machine based on LabVIEW by bus data acquisition module.In its Computer, have data are processed and outer aobvious functional module, during with assurance high speed acquisition, store test figure and do not lose several phenomenons real-time display waveform, and can carry out readjustment and frequency-domain analysis and generate test report Wave data after test.Wherein specifically, the data management module in computing machine for the data that bus data acquisition module is uploaded to computing machine add, deletion, modification and query manipulation; Demarcating module and data management module carry out data interaction, for the mode by fitting a straight line, the data after operating are demarcated to avoid occurring the several phenomenons of losing of test figure; Synchronization module and demarcating module carry out data interaction, for setting the public clock signal of a plurality of equipment, so that a plurality of device synchronization image data; Waveform callback module and synchronization module carry out data interaction, for the one or more waveforms that carry out in gathered data being adjusted back to also outer showing to user according to user's input selection; Frequency-domain analysis module and synchronization module carry out data interaction, for the data that gather being carried out to time domain and/or frequency-domain analysis on time domain and frequency domain; Test report module and frequency-domain analysis module are carried out data interaction, for the result of test is shown outward to user with the output format of fixing; Above-mentioned each module of its Computer is by the trigger action of external user.

The principle of work of each functional module will at length be provided below.

A. data management module

According to automobile motor test needs, select the Access database design database of Microsoft company, its E-R graph of a relation is as shown in Figure 3.In LabVIEW, use LabSQL Release 1.1, by realizing the operation to database at this series of Calling VI.Its realization flow as shown in Figure 4.Data management module for the data that bus data acquisition module is uploaded to computing machine add, deletion, modification and query manipulation;

B. demarcating module

Adopt steady-state optimization scaling method, with the point of limited number, by least square method, carry out linear fit, thereby obtain the approximate continuity function expression of this law of scatering.Adopt the equation of linear regression of fitting a straight line to be:

y=k×x+b????????????(1-1)

In formula: the tested value y-of x-match value k-calibration coefficient b-demarcates constant

To obtain best k and b according to the data of measuring, be located under same x the deviation d of k*x+b on measurement point y and straight line and be:

d 1=y 1-b-k*x 1????????(1-2)

d 2=y 2-b-k*x 2????????(1-3)

d n=y n-b-k*x n????????(1-4)

Order

D = Σ d i 2 = Σ 1 n [ y i - b - k i ] 2 - - - ( 1 - 5 )

B and k are asked respectively to partial derivative, make second-order partial differential coefficient be greater than zero, single order partial derivative equals zero and obtains calibration coefficient k hour of deviation D and demarcate constant b, gets in this article odd-job condition and declared working condition to calculate, and two parameters can be simplified to computing formula below:

Calibration coefficient (k)=(declared working condition calibration value-odd-job condition calibration value)/(declared working condition measured value-odd-job condition measured value);

Demarcate constant (b)=odd-job condition calibration value-calibration coefficient * odd-job condition measured value;

In this article, demarcating module and data management module carry out data interaction, for the mode by fitting a straight line, the data after operating are demarcated to avoid occurring the several phenomenons of losing of test figure; It needs to be noted, the data interaction between functional module should be understood to data interaction in logic, and is not limited to physical connection.It should be noted that in addition, the communication mode between each functional module can be taked multiple, and protection scope of the present invention should not be limited to the data interactive mode of certain particular type.

C. synchronization module

Adopt SSI to realize synchronous acquisition herein, main equipment and share a clock signal from equipment, during collection, allow from equipment first in running status, because the clock of this device channels comes from main equipment, therefore although in running status but can not obtain data at once, when effective clock appears in main equipment, this clock signal shares to Slave passage, and both start synchronous acquisition.Synchronization module and demarcating module carry out data interaction, for setting the public clock signal of a plurality of equipment, so that a plurality of device synchronization image data;

D. waveform callback module

Data acquisition system (DAS) herein comprises the waveform callback module with waveform callback function, for actual needs, can select the wave shape playback of a certain parameter, also can select the wave shape playback of many reference amounts, can carry out various operations to the waveform of playback, as part amplification, translation etc. simultaneously.Waveform callback module and synchronization module carry out data interaction, for the one or more waveforms that carry out in gathered data being adjusted back to also outer showing to user according to user's input selection;

E. frequency-domain analysis module

Data acquisition system (DAS) herein comprises the frequency-domain analysis module with frequency-domain analysis function, frequency-domain analysis module and synchronization module carry out data interaction, for on time domain and frequency domain, the data of uploading being carried out to time domain and/or frequency-domain analysis, can also be for test figure be carried out to power spectral-density analysis for actual needs frequency-domain analysis module.

F. test report module

Data acquisition system (DAS) herein comprises having the test report module that generates test report function, by ActiveX, two set of applications is combined, and makes the word program that can call in LabVIEW program, generates the test report with set form.Test report module and frequency-domain analysis module are carried out data interaction, for the structure of test is shown to user outward with the output format of fixing.

Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to the present invention by the definite scope of patent protection of submitted to claims.

Claims (4)

1. the automobile drive motor test-bed data acquisition system (DAS) based on LabVIEW, for the test-bed at automobile drive motor, carry out data acquisition, wherein automobile drive motor test-bed comprises: rectifier transformer, power supply box, tested motor and electric machine controller, electric dynamometer and Dynamometer Control device and torque meter, wherein power supply box is respectively electric machine controller by rectifier transformer and electric dynamometer is inputted required operating voltage, electric dynamometer is connected with tested motor coaxle, for tested motor provides controlled load, according to the rotational speed and torque of setting operating conditions dynamometer machine and tested motor, data acquisition system (DAS) comprises at least one voltage sensor, at least one current sensor, signal condition module, PXI bus data acquisition module and the computing machine with LabVIEW development platform, wherein said voltage sensor and/or current sensor detect voltage and/or the electric current of electric machine controller in test-bed, signal condition module gathers simulating signal and the torque simulating signal in torque meter in described voltage sensor and/or current sensor and converts it to the digital signal that data acquisition module can be identified, PXI bus data acquisition module sends the digital signal of uploading in the computing machine with LabVIEW development platform, the computing machine wherein with LabVIEW development platform is processed the digital signal of uploading, it is characterized in that: in described computing machine, there is data management module, demarcating module, synchronization module, waveform callback module, frequency-domain analysis module and test report module, wherein data management module for the data that bus data acquisition module is uploaded to computing machine add, deletion, modification and query manipulation, demarcating module and data management module carry out data interaction, for the mode by fitting a straight line, the data after operating are demarcated to avoid occurring the several phenomenons of losing of test figure, synchronization module and demarcating module carry out data interaction, for setting the public clock signal of a plurality of equipment, so that a plurality of device synchronization image data, waveform callback module and synchronization module carry out data interaction, for the one or more waveforms that carry out in gathered data being adjusted back to also outer showing to user according to user's input selection, frequency-domain analysis module and synchronization module carry out data interaction, for the data that gather being carried out to time domain and/or frequency-domain analysis on time domain and frequency domain, test report module and frequency-domain analysis module are carried out data interaction, for the result of test is shown outward to user with the output format of fixing, above-mentioned each module of its Computer is by external user trigger action, wherein the equation of linear regression of the linear fit in demarcating module is:
y=k×x+b
The tested value of x-wherein, y-match value, k-calibration coefficient, b-demarcates constant;
And calibration coefficient k=(declared working condition calibration value-odd-job condition calibration value)/(declared working condition measured value-odd-job condition measured value);
Demarcate constant b=odd-job condition calibration value-calibration coefficient * odd-job condition measured value; Wherein the calibration value under above-mentioned declared working condition and the calibration value under odd-job condition draw in advance by bench test.
2. test-bed data acquisition system (DAS) as claimed in claim 1, wherein said voltage sensor and/or current sensor detect the DC bus-bar voltage/electric current of electric machine controller input end and the three-phase alternating voltage/electric current of electric machine controller output terminal.
3. test-bed data acquisition system (DAS) as claimed in claim 1 or 2, wherein waveform callback module can also be amplified or translation for the waveform of playback being carried out to part.
4. test-bed data acquisition system (DAS) as claimed in claim 1 or 2, wherein frequency-domain analysis module can also be for carrying out power spectral-density analysis to test figure.
CN201210125218.0A 2012-04-25 2012-04-25 Vehicle driving motor test stand data acquisition system based on LabVIEW CN102645634B (en)

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CN103823181B (en) * 2012-11-19 2016-06-01 珠海格力电器股份有限公司 A kind of motor unit quality detecting system and method
CN103076484B (en) * 2012-12-27 2015-12-02 三一重工股份有限公司 electrical test system and method
CN103115784A (en) * 2013-01-25 2013-05-22 北京理工大学 Active suspension bench test measurement and control system based on LabVIEW platform
CN103344273B (en) * 2013-06-08 2016-04-06 中国东方电气集团有限公司 A kind of full electric vehicle motor driver TT&C system and investigating method thereof
CN104122431A (en) * 2014-07-15 2014-10-29 哈尔滨工程大学 Current and voltage sensor integrated box and motor parameter real-time acquisition apparatus and method with same
CN104297686A (en) * 2014-11-19 2015-01-21 芜湖杰诺瑞汽车电器系统有限公司 Electromobile motor data monitoring system based on LabVIEW
RU2591213C1 (en) * 2014-12-29 2016-07-20 Федеральное государственное унитарное предприятие "Крыловский государственный научный центр" Device for testing high-power frequency-controlled propulsion electric drive of electric propulsion system under bench conditions
CN105067031A (en) * 2015-07-21 2015-11-18 同济大学 Multichannel numerical control machine tool energy consumption data acquisition bench
CN108226774A (en) * 2016-12-09 2018-06-29 上海大郡动力控制技术有限公司 The automatic calibration system and method for Over Electric Motor with PMSM
CN107462281B (en) * 2017-08-09 2020-03-03 杭州电子科技大学 Rotating speed and torque integrated soft detection circuit based on armature voltage and current signals
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CN109001624A (en) * 2018-05-03 2018-12-14 开沃新能源汽车集团有限公司 A kind of driving motor of pure electric automobile rack automatic calibration method and its device

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