Motor resolver initial rotor position calibration method and device, electronic equipment and medium

Abstract

The invention provides a motor resolver initial rotor position calibration method and device, electronic equipment and a medium, and the method comprises the steps: obtaining a rotor estimation position through a pulsating high-frequency voltage injection method, and obtaining the real position of a rotor according to the estimation position of the rotor and the motor mutual inductance deviation; and according to the real position of the rotor and the rotor resolver position obtained through measurement, obtaining the initial rotor position of the resolver zero position. Through the configuration, the motor resolver initial rotor position calibration method provided by the invention can perform calibration under the condition that the motor is static, namely an automobile is not supported, so that the whole identification process is quicker, more continuous, simpler and more convenient, and the calibration efficiency is improved; furthermore, the motor mutual inductance deviation is used for compensation, the rotor position information can be extracted more accurately, rotor position dynamic estimation errors are effectively reduced, and the precision of rotary transformer zero initial angle calibration is remarkably improved.

Description

technical field [0001] The invention relates to the field of permanent magnet synchronous motor control, in particular to a method, device, electronic equipment and medium for calibrating the initial rotor position of a motor resolver. Background technique [0002] Permanent Magnet Synchronous Motor (PMSM, Permanent Magnet Synchronous Motor) has the advantages of small size, simple structure, high power density, high efficiency and energy saving, and strong output torque capability. has been widely used. The high-performance control of permanent magnet synchronous motor depends on accurate rotor position information. Therefore, the initial rotor position calibration of permanent magnet synchronous motor resolver is an important part of motor control. However, due to production and processing errors, the initial rotor position of each motor's resolver may not be consistent. Therefore, it is necessary to recalibrate the initial (zero) rotor position of the motor resolver when...

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a method, device, electronic equipment and storage medium for the calibration of the initial rotor position of a motor resolver in order to solve the problem of low precision in the identification of the motor rotor angle by the traditional pulse-vibration high-frequency voltage injection method in the prior art , to improve the identification accuracy of the motor rotor position

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