Constructing method for robust controller for radial position of bearingless asynchronous motor

Abstract

The invention discloses a constructing method for an internal model controller of a generalized support vector machine inverter for a radial position of a bearingless asynchronous motor. A complex controlled object is constructed by a Park inverse transformer, a Clark inverse transformer, a current tracking inverter and a controlled radial position system of the bearingless asynchronous motor as a whole; the generalized support vector machine inverter of the complex controlled object is constructed by a support vector machine and four linear links; then the generalized support vector machine inverter is arranged in front of the complex controlled object to form a generalized pseudo-linear system; and the generalized pseudo-linear system is decoupled into two single-input and single-output second-order displacement linear subsystems in a linearizing manner, then an internal model controller is constructed by introducing an internal model control method aiming at the two second-order linear subsystems; and finally the internal model controller of the generalized support vector machine inverter for the radial position of the bearingless asynchronous motor is constructed by the internal model controller and the generalized support vector machine inverter. The constructing method has the advantages that the design is simple, control parameters can be adjusted conveniently, and the control performance is excellent.

Description

technical field [0001] The invention is a construction method of a generalized inverse internal model controller of a bearingless asynchronous motor radial position support vector machine, which belongs to the field of high-speed electric transmission, and improves beneficial conditions for realizing the high-performance control of a bearingless asynchronous motor, and is suitable for high speed and high precision Machine tool direct drive spindle, centrifugal pump, electromechanical battery, etc. Background technique [0002] Bearingless asynchronous motors can meet the requirements of modern military and industrial fields for high-speed / ultra-high-speed, friction-free, lubrication-free, and maintenance-free high-performance special transmission systems. Magnetic levitation motor has a very broad application prospect. [0003] PID controller is a very mature control algorithm, which is widely used in actual industrial motor drive control. When the structure and parameters...

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Problems solved by technology

However, this algorithm is based on the estimation of various states of the motor when using a linear model, and the bearingless asynchronous motor is a nonlinear coupling system with multiple inputs and multiple outputs, so the conventional PID control algorithm will not be able to achieve an ideal control effect.

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