Secant-method based internal model position control method for permanent magnet linear synchronous motor

Abstract

The invention relates to a secant-method based internal model position control method for a permanent magnet linear synchronous motor and belongs to a novel internal model control system. The novel internal model control system comprises a kernel ridge regression internal model and a secant method controller; the kernel ridge regression internal model is high-precision linear motor nonlinear model built by the kernel ridge regression process. The inverse of the kernel ridge regression internal model is acquired through iteration solving by the secant method to serve as the controller; the output of the kernel ridge regression internal model and the real position of the motor are subjected to difference operation, the difference value is fed back to the input of the secant method controller through a filter, so that the internal model control method based on the secant method is formed to realize position control for the permanent magnet linear synchronous motor. The secant-method based internal model position control method is characterized in that, the internal model of the permanent magnet linear synchronous motor is built by the kernel ridge regression process, and the inverse of the kernel ridge regression internal model is acquired through iteration solving by the secant method to serve as the controller. By the secant-method based internal model position control method, high tracking precision of the internal model position control system of the permanent magnet linear synchronous motor, high robustness and interference resistance capacity are achieved.

Description

technical field [0001] The invention relates to a method for controlling the position of an internal mold of a permanent magnet synchronous linear motor with a chord cut method. Background technique [0002] In many industrial control fields, it is often necessary to control the controlled object to make a linear motion. However, due to the immature development of the linear drive, it has been necessary to obtain the linear motion through the mechanical conversion of the rotary motion of the rotating motor for a long time. The linear motor can be directly driven linearly without the need for an intermediate mechanical conversion mechanism and has many unique advantages. Linear motors have many advantages, such as fast response, very large thrust and very small loss, etc. In terms of high acceleration, positioning accuracy and rigidity, smooth and error-free motion can be achieved. Especially the permanent magnet synchronous linear motor, because of its small size, light wei...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a permanent magnet synchronous linear motor internal model control method to solve the matching problem of positive and negative modes in the existing internal model control system, so as to achieve the double excellence of tracking and robustness

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