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Sliding mode control system and modeling method for permanent magnet synchronous motor based on singular perturbation theory

A technology of permanent magnet synchronous motor and singular perturbation theory, which is applied in motor generator control, control system, motor control, etc., can solve the problems of parameter perturbation and external disturbance, weak robustness and slow system response speed.

Active Publication Date: 2020-11-17
CHINA UNIV OF MINING & TECH
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Problems solved by technology

Although the traditional PID double closed-loop control method can make the servo system obtain a certain control accuracy, the response speed of the system is slow, and the robustness to parameter perturbation and external disturbance is not strong.

Method used

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  • Sliding mode control system and modeling method for permanent magnet synchronous motor based on singular perturbation theory
  • Sliding mode control system and modeling method for permanent magnet synchronous motor based on singular perturbation theory
  • Sliding mode control system and modeling method for permanent magnet synchronous motor based on singular perturbation theory

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Embodiment Construction

[0113] The present invention is further clarified in conjunction with the accompanying drawings and specific embodiments, and it is to be understood that these examples are intended to illustrate the invention, and those skilled in the

[0114] A permanent magnet synchronous motor sliding mode control system based on a singular test theory, such as figure 1 As shown, including angular velocity error module, tap chrome system sliding mode control law module SMC-S, fast sub-system sliding mode control law module SMC-F, magnetic chain rotation spatial angle Module, current transformer module, three-phase stationary symmetry ABC coordinate system transfer two-phase synchronous rotation orthogonal DQ coordinate system module, two-phase synchronous rotation orthogonal DQ coordinate system transfer two phase stationary orthogonal αβ coordinate system module, calculating fast ...

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Abstract

The invention discloses a sliding mode control system of a permanent magnet synchronous motor based on a singular perturbation theory and a modeling method thereof. A motor mathematical model is decomposed based on a singular perturbation theory, and design of a controller is performed for a slowly varying time subsystem and a quickly varying time subsystem in different time scales to construct acomposite controller; an Euclidean norm is considered to the design of a sliding mode controller to replace a symbol function to weaken a buffeting phenomenon so as to form a sliding mode control system of a permanent magnet synchronous motor based on a singular perturbation theory, and finally, the stability of a closed-loop system is analyzed by applying the Lyapunov stability theory. The control system has high robustness and can achieve accurate tracking for given angular speed signals.

Description

Technical field [0001] The present invention relates to a permanent magnet synchronous motor based on the sliding mode control system and method for modeling singular perturbation theory, it belongs to the field of permanent magnet synchronous motor control. Background technique [0002] Compared with the DC motor, because a three-phase AC permanent magnet synchronous motor having a high power factor, small size, light weight and simple structure, etc. have been widely used in fast response, wide speed range and the high performance servo drives accurate positioning system. However, the mathematical model of permanent magnet synchronous motor is a nonlinear, multivariable and strong coupling of the high-order system, its analysis and solving quite complex, the need to simplify its research and new control methods. [0003] Thus, the design of permanent magnet synchronous motor servo control system plays a vital role in improving the dynamic performance of the control system. [0...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/00H02P6/34
CPCH02P6/34H02P21/0007H02P2205/07
Inventor 杨春雨周林娜刘晓敏王浩宇车志远
Owner CHINA UNIV OF MINING & TECH
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