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Motor cogging torque test method and device, electronic equipment and medium

A test method and technology of cogging torque, applied in measuring devices, torque measurement, instruments, etc., can solve the problems of high price, less equipment, and high requirements for testing equipment, and achieve accurate cogging torque, low cost, The effect of meeting the requirements of precision

Inactive Publication Date: 2021-01-22
GUANGDONG BOZHILIN ROBOT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many cogging torque testing methods, and the following problems generally exist: 1. The market has a great demand for cogging testing, but because the cogging torque coefficient itself is extremely small, the requirements for testing equipment are high, resulting in the real test of cogging. Less equipment, more expensive
2. Most of the cogging torque test equipment are relatively independent and single test equipment. The average price of the test bench is 100,000-200,000, and each motor is charged 4,000-6,000 RMB per test. The market price remains high

Method used

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  • Motor cogging torque test method and device, electronic equipment and medium
  • Motor cogging torque test method and device, electronic equipment and medium
  • Motor cogging torque test method and device, electronic equipment and medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] This embodiment provides a method for testing the cogging torque of the motor. The cogging torque of the motor is obtained by measuring the total torque of the motor and performing analysis and calculation.

[0046] Cogging torque is one of the unique problems of permanent magnet motors, and it is a key issue that must be considered and solved in the design and manufacture of high-performance permanent magnet motors. It is in the state that the armature winding is not energized, because there is a gap between the tooth slots, the magnetic permeability and the permanent magnet are different after the gas is magnetized, and the magnetic field generated by the permanent magnet and the cogging action of the armature core are generated in the circumferential direction. torque. It is actually the tangential force between the permanent magnet and the armature teeth, so that the rotor of the permanent magnet motor has a tendency to align with the stator along a certain directio...

Embodiment 2

[0074] This embodiment provides a motor cogging torque testing device, which is used to implement the motor cogging torque testing method of the above-mentioned first embodiment, has corresponding functional modules and beneficial effects for executing the method, and can be composed of software and / or hardware. It is integrated in the upper computer of the general motor test system.

[0075] The motor cogging torque testing device comprises:

[0076] An acquisition module, configured to acquire the total torque of the horizontally placed motor under test;

[0077] A processing module, configured to determine the external force torque in a first processing manner and determine the static friction torque in a second processing manner based on the total torque;

[0078] The removal module is used to remove external force torque and static friction torque from the total torque according to a preset mechanical model to obtain cogging torque.

Embodiment 3

[0080] This embodiment provides an electronic device, including:

[0081] one or more processors;

[0082] memory for storing one or more programs;

[0083] When the one or more programs are executed by the one or more processors, the one or more processors are made to implement the above motor cogging torque testing method.

[0084] The number of processors in the electronic device can be one or more, and the processors and memory in the device can be connected through a bus or other methods. As a computer-readable storage medium, the memory can be used to store software programs and computer executable programs. And modules, such as program instructions / modules corresponding to the motor cogging torque testing method in the embodiment of the present invention.

[0085] The processor executes various functional applications and data processing of the electronic device by running the software programs, instructions and modules stored in the memory, that is, realizes the abov...

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PUM

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Abstract

The invention discloses a motor cogging torque test method and system. The motor cogging torque test method comprises the following steps: acquiring the total torque of a transversely arranged testedmotor; based on the total torque, determining an external force torque in a first processing mode, and determining a static friction force torque in a second processing mode; and according to a presetmechanical model, removing the external force torque and the static friction force torque from the total torque, thus obtaining the cogging torque. According to the invention, a universal motor testsystem is adopted to carry out cogging torque test on the transversely arranged motor, and according to the stress composition of the tested motor, the external force torque and the static friction force torque are calculated and separated from a total torque waveform to obtain the cogging torque; compared with a professional cogging torque test board, the universal motor test system adopted by the invention is low in cost, the cogging torque obtained through test is relatively precise, and the requirement of common motor test for precision can be met.

Description

technical field [0001] Embodiments of the present invention relate to permanent magnet motor testing technology, in particular to a motor cogging torque testing method, device, electronic equipment and media. Background technique [0002] Cogging torque is one of the core parameters of permanent magnet motors, and it is a key issue that must be considered and solved in the design and manufacture of high-performance permanent magnet motors. Because it causes motor vibration and noise, accurate measurement of cogging torque has always been a necessary test item in the motor industry. [0003] The common motor index test system in the industry only tests the general index of the motor, such as speed, torque fluctuation, etc. There are many cogging torque testing methods, and the following problems generally exist: 1. The market has a great demand for cogging testing, but because the cogging torque coefficient itself is extremely small, the requirements for testing equipment ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L3/00
CPCG01L3/00
Inventor 王荣华曹敬杨雄叶帅方绍军梁德成邹勇杨国石洪燎
Owner GUANGDONG BOZHILIN ROBOT CO LTD