Permanent magnet synchronous motor speed regulation control method based on self-adaptive super-spiral algorithm

Abstract

The invention discloses a permanent magnet synchronous motor speed regulation control method based on a self-adaptive super-spiral algorithm, wherein a self-adaptive law is introduced into a super-spiral algorithm to form a speed loop controller, and a speed loop controller module is added to a permanent magnet synchronous motor speed regulation control system, so that the speed regulation controlof a motor is achieved. The method comprises the following steps: (1) making the current id of the d axis of a current loop equal to 0; (2) outputting the q-axis reference current through an ASTW controller by a system; (3) performing coordinate transformation on the d-axis reference current and the q-axis reference current through an FOC algorithm to obtain d-axis current and q-axis current; and(4) forming a double-closed-loop control system by adopting deviation control. According to the method, the self-adaptive law is added into the super-spiral algorithm, so that the super-spiral gain changes along with the change of disturbance; the controller can realize accurate speed regulation control without knowing the specific value of the uncertain disturbance boundary, so that unnecessarybuffeting caused by overlarge selection of the control gain due to inaccurate estimation of the boundary value is avoided; and the dynamic response speed of the system can be increased, and the disturbance rejection, the control precision and the operation reliability are improved.

Description

technical field [0001] The invention relates to the technical field of motor speed regulation control, and mainly relates to a speed regulation control method of a permanent magnet synchronous motor based on an adaptive superhelical algorithm. Background technique [0002] At present, with the development of rare earth permanent magnet materials and electric power devices, permanent magnet synchronous motors have attracted widespread attention for their high torque, high moment of inertia ratio and high energy density. However, the permanent magnet synchronous motor is a strongly coupled and multivariable nonlinear system. In practical engineering applications, its working environment is relatively complex, and there are often disturbances, such as parameter perturbation, load disturbance and other uncertainties. If Failure to deal with these nonlinear uncertain factors well will cause serious harm to the servo system with the permanent magnet synchronous motor as the core. ...

AI Technical Summary

Problems solved by technology

However, in the field of industrial control, it is very difficult to obtain disturbances, and it is often necessary to know the boundaries of disturbances in theoretical analysis and actual parameter selection. In addition, sliding mode variable structure control will produce high-frequency chattering when the system is stable. Factors restrict the application of sliding mode in engineering to a certain extent

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