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Motor rotation speed acquisition method, device, equipment and computer readable storage medium

A technology of motor speed and acquisition method, applied in the field of motor speed acquisition and computer readable storage medium, can solve problems such as low motor speed test accuracy, and achieve the effects of convenient and fast layout, simple test method and high calculation accuracy

Inactive Publication Date: 2017-09-05
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned technical problems, the present invention provides a method, device, equipment and computer-readable storage medium for obtaining motor speed, which solves the problem of low motor speed test accuracy due to operational errors of sensors and test personnel

Method used

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  • Motor rotation speed acquisition method, device, equipment and computer readable storage medium
  • Motor rotation speed acquisition method, device, equipment and computer readable storage medium
  • Motor rotation speed acquisition method, device, equipment and computer readable storage medium

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Embodiment Construction

[0049] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0050] Such as figure 1 As shown, the embodiment of the present invention provides a method for obtaining the motor speed, including:

[0051] Step 11, obtaining the resolver current signal output by the resolver installed on the motor of the electric vehicle, the rotor of the resolver is synchronized with the rotor of the motor;

[0052] In this embodiment, the resolver is an electromagnetic inductor, which is a small AC motor for measuring a...

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Abstract

The invention discloses a motor rotation speed acquisition method, device, equipment and a computer readable storage medium. The motor rotation speed acquisition method comprises the steps of: acquiring a rotation current signal output by a resolver mounted on a motor of an electric vehicle, wherein a rotor of the resolver is synchronized with a rotor of the motor; obtaining the motor speed according to the rotation current signal. The method utilizes an electrical signal output by the resolver to measure the speed of the motor of the electric vehicle, the test method is simple, the data acquisition is convenient and quick, and the calculation precision is high; the rotation speed and the rotation speed fluctuation of the motor can be accurately measured, and the impact of greater motor fluctuation on the full vehicle NVH performance is avoided.

Description

technical field [0001] The present invention relates to the field of electric vehicles, in particular to a method, device, equipment and computer-readable storage medium for acquiring the rotational speed of a motor. Background technique [0002] With the development of electric vehicles, the passengers have higher and higher requirements for the comfort of the vehicle, and the fluctuation of the motor speed directly affects the NVH performance of the vehicle. Now the speed fluctuation test is done by pasting the code tape on the drive shaft, using the photoelectric sensor to test the speed of the drive shaft, and then using the speed ratio of the reducer to reverse the motor speed, but this method has high requirements for the paste of the code tape. The accuracy depends on the number of high-precision photoelectric sensors and code tapes, which requires high operating requirements for sensors and testers. Contents of the invention [0003] In order to solve the above te...

Claims

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Application Information

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IPC IPC(8): G01P3/44
CPCG01P3/44
Inventor 顾梦引牛维宋克克
Owner BEIJING ELECTRIC VEHICLE