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Synchronous motor control method and system based on composite nonlinear feedback integral sliding mode

A nonlinear feedback, integral sliding mode technology, applied in control systems, motor control, vector control systems, etc., can solve problems such as slow response speed and weak robustness

Active Publication Date: 2019-09-06
CHINA UNIV OF MINING & TECH
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  • Abstract
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Problems solved by technology

The traditional PID double closed-loop control method has a slow response speed and is not robust to parameter perturbations and external disturbances

Method used

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  • Synchronous motor control method and system based on composite nonlinear feedback integral sliding mode
  • Synchronous motor control method and system based on composite nonlinear feedback integral sliding mode
  • Synchronous motor control method and system based on composite nonlinear feedback integral sliding mode

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Embodiment Construction

[0087] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention All modifications of the valence form fall within the scope defined by the appended claims of the present application.

[0088] A synchronous motor control system based on compound nonlinear feedback integral sliding mode, such as figure 1 As shown, including compound nonlinear feedback integral sliding mode control module CNF_ISM, q-axis current error module, d-axis current error module, q-axis current control module ACQR, d-axis current control module ACDR, flux linkage rotation space angle Module, current transformer module, three-phase static symmetrical ABC coordinate system to t...

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Abstract

The invention discloses a synchronous motor control method and system based on a composite nonlinear feedback integral sliding mode. According to the synchronous motor control method and system basedon the composite nonlinear feedback integral sliding mode, a composite nonlinear feedback controller is designed for a nominal system, and an integral sliding mode controller is designed based on an exponential approach law, so that the permanent magnet synchronous motor control system based on the composite nonlinear feedback integral sliding mode is formed. In addition, the stability of the system is analyzed by using a Lyapunov stability theory. The most important characteristic is that that the design of a speed loop is carried out on a motor based on the composite nonlinear feedback integral sliding mode, so that the control system has strong robustness, can realize accurate, fast and low-overshoot tracking of a given angular velocity signal, and is suitable for the design of a servocontrol system of the permanent magnet synchronous motor.

Description

technical field [0001] The invention relates to a synchronous motor control method and system based on composite nonlinear feedback integral sliding mode, and belongs to the technical field of permanent magnet synchronous motor control. Background technique [0002] In recent years, permanent magnet synchronous motors have been widely used in servo transmission systems with fast response speed, wide speed range and high positioning accuracy due to their high power factor, small size, light weight and simple structure. However, the mathematical model of the three-phase AC permanent magnet synchronous motor is a nonlinear, high-order and strongly coupled multivariable system, and its analysis and solution are quite complicated, so it needs to be simplified and a new control method should be studied. [0003] It can be seen that the design of the permanent magnet synchronous motor servo control system plays a vital role in improving the system performance. [0004] The most co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/22H02P6/34H02P25/024H02P27/08
CPCH02P21/001H02P27/08H02P2205/01H02P2205/07H02P2209/11H02P6/34H02P21/22H02P25/024
Inventor 杨春雨车志远周林娜代伟卢铁刘金浩赵建国
Owner CHINA UNIV OF MINING & TECH
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