Permanent magnet synchronous motor speed loop control parameter setting method based on fractional order sliding mode controller

Abstract

The invention provides a permanent magnet synchronous motor speed loop control parameter setting method based on a fractional order sliding mode controller, and mainly relates to the technical field of alternating current motor control. The permanent magnet synchronous motor speed loop control parameter setting method based on the fractional order sliding mode controller comprises the steps of constructing a fractional order sliding mode control surface and optimizing and setting the parameters of the fractional order sliding mode controller through an intelligent algorithm. The invention further designs a permanent magnet synchronous motor speed control device based on fractional order sliding mode control. According to the permanent magnet synchronous motor speed control method and device based on the fractional order sliding mode controller, the high-performance control over the motor can be achieved under the condition that load disturbance exists in the control system of the permanent magnet synchronous motor. According to the method, the fractional order sliding mode controller is used for replacing a traditional integer order sliding mode controller, and the improved particle swarm optimization algorithm is adopted for automatically optimizing and setting the parameters of the fractional order controller, so that the good anti-disturbance capacity, robustness and highercontrol precision are realized.

Description

technical field [0001] The invention mainly relates to the technical field of control of an AC motor, in particular to a method for setting control parameters of a permanent magnet synchronous motor speed loop based on a fractional-order sliding mode controller. Background technique [0002] Permanent magnet synchronous motor has obvious advantages such as simple structure, reliable operation, small size, light weight and high efficiency, so it has been widely used in the field of electric transmission. With the continuous improvement of permanent magnet materials in recent years, the application of permanent magnet synchronous motors has become more extensive. The mathematical model of permanent magnet synchronous motors is multi-coupling nonlinear, so the establishment of its mathematical model is relatively complicated, and the requirements are also higher. [0003] The sliding mode controller has discontinuous characteristics in the control process, and the system struc...

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Problems solved by technology

[0004] In order to solve the deficiencies in the prior art, the present invention provides a tuning method for the speed loop control parameters of the permanent magnet synchronous motor based on the fractional-order sliding mode controller, which solves the difficult and difficult tuning of the fractional-order sliding mode controller parameters of the permanent magnet synchronous motor. The problem of unsatisfactory tuning effect provides a better speed control method for permanent magnet synchronous motors

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