Motor coordinate transformation control method and system

A technology of coordinate transformation and control system, which is applied in the direction of control system, vector control system, motor generator control, etc., and can solve problems such as shutdown due to fault reporting, insufficient data accuracy, and vibration of the motor

Inactive Publication Date: 2014-03-26
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] This application provides a control method and a control system for coordinate transformation of a motor, which solves the technical problem in the prior art that the motor is oscillating and unstable during operation due to ins...

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  • Motor coordinate transformation control method and system
  • Motor coordinate transformation control method and system

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Embodiment Construction

[0069] The embodiment of the present application provides a control method and a control system for the coordinate transformation of the motor, which solves the problem of lack of data accuracy in the prior art, which causes the motor to oscillate, become unstable, or even report a fault and shut down, resulting in out-of-control control The technical problem is to improve the precision of processing data of the single-chip microcomputer and improve the stability of the motor operation.

[0070] The technical solution in the embodiment of the present application is to solve the above problems, and the general idea is as follows:

[0071] A control method for motor coordinate transformation, comprising:

[0072] When the corresponding k and function values ​​are stored in the microcontroller of the control system, determine the current phase angle θ of the motor rotor 1 , wherein, the k is the number of parts corresponding to the phase angle θ of the motor rotor, when dividing...

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Abstract

The invention discloses a motor coordinate transformation control method and system. The method includes: when k and a function value corresponding to each other are stored in a single-chip microcomputer of the control system, a current phase angle theta1 of a motor rotor is determined, k is a number of corresponding parts of the phase angle theta of the motor rotor, and a 360-degree angle is divided into 2n equal parts; when accuracy of each part is radian, the function value is equal to sin theta increased by 2m times, k is a consecutive integer larger than or equal to 0, n and m are both integers larger than 1; the number k1 of corresponding parts of the theta1 is calculated; according to the k1, a first function value corresponding to the k1 in the single-chip microcomputer is queried; the first function value is diminished by 2m times to obtain the value of sin theta1, and motor control parameters are calculated.

Description

technical field [0001] The invention relates to the technical field of electronic control, in particular to a control method and a control system for coordinate transformation of a motor. Background technique [0002] An electric motor is a rotary electric machine that converts electrical energy into mechanical energy. It mainly includes an electromagnet winding or distributed stator winding for generating a magnetic field and a rotating armature or rotor. Under the action of the rotating magnetic field of the stator winding, a current passes through the armature squirrel-cage aluminum frame and is subjected to the action of the magnetic field to make it rotate. [0003] Magnetic synchronous brushless DC motor position sensorless vector control method, one of the key technologies is the coordinate transformation between the d / q phase and α / β, and other control procedures such as Fourier (Fourier) transformation involve sinθ Computing techniques with cosθ. Since 0≤sinθ≤1, 0...

Claims

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Application Information

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IPC IPC(8): H02P21/00H02P21/14
Inventor 钟明陈跃涂小平刘启武
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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