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Method and device for measuring motor torque

A technology of motor torque and measurement method, applied in measurement devices, torque measurement, power measurement, etc., can solve problems such as inaccurate torque

Active Publication Date: 2019-11-08
深圳市智创电机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a motor torque measurement method and device to solve the problem of inaccurate torque measured by the torque measurement method and device in the prior art

Method used

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  • Method and device for measuring motor torque
  • Method and device for measuring motor torque
  • Method and device for measuring motor torque

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Embodiment Construction

[0043] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0044] In order to illustrate the technical solutions of the present invention, the following specific embodiments are used for description.

[0045] Embodiments of the present invention provide a method for measuring motor torque, such as figure 1 As shown, the motor torque measurement method includes the following steps:

[0046] Step S101. Obtain the current of each phase of the motor, and convert the current of each phase of the motor into a direct-axis current and a quadrature-axis current.

[0047] In step S101, specifically, the motor driver and the motor are conne...

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Abstract

The present invention is suitable for the technical field of motors and provides a motor torque measuring method and device. The motor torque measuring method includes the following steps: acquiring current of each phase of a motor and converting current of each phase of the motor into direct-axis current and quadrature-axis current; obtaining direct-axis torque and quadrature-axis torque based on the direct-axis current and the quadrature-axis current; obtaining resultant torque by vectorial synthesis of the direct-axis torque and the quadrature-axis torque; obtaining the rotor position andobtaining the electrical angle according to the rotor position; and obtaining effective torque of the motor according to the electrical angle and the resultant torque. The cost of the whole device islow, and the effective torque of the motor can be accurately obtained without setting up a new hardware device.

Description

technical field [0001] The invention relates to the technical field of motors, and in particular, to a method and device for measuring motor torque. Background technique [0002] At present, there are two kinds of torque test methods in the industry. One is the torque sensor test method, which adds a torque sensor between the motor and the load. This method is limited by the mechanical structure and is very expensive. Another method is the power estimation method. First, the electrical power of the motor is tested, and then the electrical power is converted into the mechanical output power according to a certain ratio. This method is directly tested, but the error is large. To sum up, in the prior art, there is a problem that the torque measured by the torque measuring method and device is inaccurate. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a motor torque measurement method and device to solve the problem of inaccurate torque m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L3/00
Inventor 熊青山
Owner 深圳市智创电机有限公司