A motor automatic calibration method, device and controller

A technology of automatic calibration and motor temperature, applied in the estimation/correction of motor parameters, etc., can solve the problems of over-temperature danger, influence of fitting results, influence of data accuracy, etc., to avoid the effect of over-temperature

Active Publication Date: 2021-03-09
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has a huge workload and is prone to errors, so various automatic calibration methods have emerged.
[0004] In the existing automatic calibration method, the mode of curve fitting is usually adopted to obtain the best running curve, but in the process of curve fitting, since the method is to fit the whole curve, each test point is It has an impact on the fitting results of other test points. When individual test points with large deviations appear, the obtained fitting results will be greatly affected.
[0005] And in the process of automatic calibration of the motor, the temperature will affect the accuracy of the automatic calibration data and the safety of the calibration process
When the temperature is too high, the accuracy of the data will be affected, and the danger of over-temperature will also occur

Method used

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  • A motor automatic calibration method, device and controller
  • A motor automatic calibration method, device and controller
  • A motor automatic calibration method, device and controller

Examples

Experimental program
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Effect test

Embodiment 1

[0058] An embodiment of the present invention provides a motor automatic calibration method, such as figure 1 As shown, the method includes:

[0059] S1. Initialize the direct-axis current, keep the direct-axis current unchanged, generate the first input sequence, initialize the quadrature-axis current, set the step size of the quadrature-axis current, and generate the second input sequence.

[0060] S2. Send the direct-axis current of the first input sequence and the quadrature-axis current of the second input sequence to the motor, and record the corresponding first output sequence of the direct-axis voltage intensity, quadrature-axis voltage intensity and motor torque output by the motor , the second output sequence and the third output sequence.

[0061] S3. Generate an isotorque diagram according to the first input sequence, the second input sequence and the third output sequence.

[0062] S4. According to the first input sequence, the second input sequence, the first o...

Embodiment 2

[0097] A feasible embodiment of the present invention provides an automatic motor calibration device. Specifically, such as Figure 4 As shown, the motor automatic calibration device includes: an initialization sequence acquisition module, a motor control module, a data processing module and a temperature detection module.

[0098] The initialization sequence acquisition module is used to initialize the direct axis current, initialize the quadrature axis current and set the step size of the quadrature axis current, and obtain the initialized direct axis current list and the initialized quadrature axis current list;

[0099] The motor control module is used to obtain and record the motor torque, direct-axis voltage intensity and quadrature-axis voltage intensity according to the initialized direct-axis current list and the initialized quadrature-axis current list;

[0100] The data processing module is used to perform data processing on the direct axis current, quadrature axis...

Embodiment 3

[0138] An embodiment of the present invention provides a controller, which includes the above-mentioned automatic calibration device for a motor. A computer-readable storage medium is included in the controller, and at least one instruction, at least one section of program, code set or instruction set are stored in the storage medium, and the at least one instruction, the at least one section of program, the code The set or instruction set is loaded and executed by the processor to realize the above-mentioned automatic calibration method of the motor.

[0139] The controller is used to obtain the direct-axis current of the first input sequence and the quadrature-axis current of the second input sequence, and record the motor torque, the direct-axis voltage intensity and the quadrature-axis voltage intensity corresponding to the output of the first output sequence, the second Second output sequence and third output sequence.

[0140] The controller can also obtain the isotorqu...

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Abstract

The invention relates to the field of vehicle performance testing, and provides a motor automatic calibration method, device and controller. The method obtains the direct-axis voltage strength, the quadrature-axis voltage strength and the motor torque by inputting the direct-axis current and the quadrature-axis current, and according to the relationship among the motor torque, the direct-axis current and the quadrature-axis current, and the direct-axis current, the quadrature-axis Data processing is performed on the relationship between the current, the direct-axis voltage intensity and the quadrature-axis voltage intensity, and the direct-axis current and the quadrature-axis current corresponding to the given torque value at different speeds are obtained. The method performs difference between adjacent points, and when error data occurs, the error data only affects adjacent points, and other data is not affected, thereby avoiding the influence of individual abnormal points on the entire calculation. The method also has a temperature detection function before automatic calibration, avoiding the danger caused by over-temperature and the influence on data.

Description

technical field [0001] The invention relates to the field of vehicle performance testing, in particular to a motor automatic calibration method, device and controller. Background technique [0002] Permanent magnet synchronous motor (PMSM) is a new type of motor developed in recent years. It has the advantages of small rotor inertia, high efficiency, high power density and high reliability, so it is very suitable for high-performance servo systems. Permanent magnet synchronous motors are gradually replacing DC motors and induction motors. At the same time, since the permanent magnet synchronous motor does not need an excitation winding, the volume, weight and loss are significantly reduced, and the heating of the motor is avoided, thereby improving the efficiency and power factor, and having an obvious energy-saving effect. [0003] A current common motor control strategy is implemented by inputting the current speed and required torque of the motor, and looking up the tabl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P23/14
Inventor 王彤刘忠峰窦勇
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD
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