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Method and system for controlling permanent magnet synchronous motor based on sliding mode control theory

A technology of permanent magnet synchronous motor and control method, which is applied in the direction of control system, control generator, vector control system, etc., and can solve the problems of affecting the control accuracy of the motor and slow dynamic response of the motor

Inactive Publication Date: 2016-01-20
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
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Problems solved by technology

However, the dynamic response of the traditional vector control motor is slow, and the motor parameters will change with the load of the working condition during operation, that is, parameter perturbation, load disturbance, etc., which will affect the control accuracy of the motor

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  • Method and system for controlling permanent magnet synchronous motor based on sliding mode control theory
  • Method and system for controlling permanent magnet synchronous motor based on sliding mode control theory
  • Method and system for controlling permanent magnet synchronous motor based on sliding mode control theory

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0032]The purpose of the present invention is to overcome the defects of slow dynamic response and poor control effect caused by various parameters and load interference faced by permanent magnet synchronous motors under complex working conditions, and provide a fast dynamic response and strong self-adaptive ability. , A permanent magnet synchronous motor control method with high control precisi...

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Abstract

The present invention discloses a method and a system for controlling a permanent magnet synchronous motor. Nonsingular terminal sliding mode control is introduced into a speed ring of a permanent magnet synchronous motor vector control system, a speed controller is redesigned based on a nonsingular terminal sliding mode control method, so as to obtain a relatively stable q-axis reference current, and furthermore, relatively ideal rotating speed, torque and so on can be obtained. The system of the present invention can quickly and effectively adjust various input and output parameters of the permanent magnet synchronous motor when both interference and uncertain parameters exist in the system at the same time, is quick in dynamic response speed and high in robustness, and can improve control precision and operation reliability of the permanent magnet synchronous motor.

Description

technical field [0001] The invention belongs to the technical field of permanent magnet synchronous motors, and more specifically relates to a control method and system for permanent magnet synchronous motors based on sliding mode control theory. Background technique [0002] In recent years, with the development of rare earth permanent magnet materials and power devices, permanent magnet synchronous motors (Permanent Magnet Synchronous Motor, PMSM) have received extensive attention for their high performance, high torque inertia ratio and high energy density, especially permanent magnet The decline in material prices and the improvement of magnetic properties have greatly promoted the development and application of permanent magnet synchronous motors. In recent years, the permanent magnet synchronous motor system is playing an increasingly important role in the servo system with high precision and wide speed range. Permanent magnet synchronous motor is a multivariable, str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00
Inventor 徐伟蒋亚杰穆朝絮
Owner HUAZHONG UNIV OF SCI & TECH
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