A Construction Method of Decoupling Controller for Bearingless Permanent Magnet Synchronous Motor

Abstract

The invention discloses a construction method for a bearing-less permanent-magnet synchronous motor decoupling controller. Two Clark inverse transformers, two current-tracking inverters, a bearing-less permanent-magnet synchronous motor and a load thereof are integrated to form a compound controlled object, a support vector machine and integrators are used to form a support vector machine inverter, and the support vector machine inverter is connected in series before the compound controlled object, so that a pseudo-linear system consisting of two displacement subsystems and a rotational speed subsystem is composed; according to a linear system design method, the pseudo-linear system is then designed into a linear closed-loop controller, finally, the linear closed-loop controller and the support vector machine inverter are connected with each other in series, and the linear closed-loop controller, the support vector machine inverter, the two Clark inverse transformers and the two current-tracking inverters are used to form a support vector machine inverter controller. The control structure of the controller is simple, the performance of the control system is excellent, and the dynamic decoupling control of the bearing-less permanent-magnet synchronous motor between two degrees of freedom of radial suspending force and between radial suspending force and rotational speed can be realized.

Description

technical field [0001] The invention is a bearingless permanent magnet synchronous motor control system based on a support vector machine inverse, specifically a construction method of a bearingless permanent magnet synchronous motor decoupling controller, which is suitable for high-performance control of a bearingless permanent magnet synchronous motor and belongs to The technical field of electric drive control equipment. Background technique [0002] Bearingless permanent magnet synchronous motor is a new type of motor that applies bearingless technology to ordinary permanent magnet synchronous motors. On the basis of permanent magnet synchronous motors, the magnetic bearing winding (coil) that generates radial suspension force and the motor stator winding Press together to realize the bearingless motor. Bearingless permanent magnet synchronous motor not only has the advantages of high efficiency, high power factor, small size, light weight and good control performance o...

AI Technical Summary

Problems solved by technology

As a complex nonlinear system, the bearingless permanent magnet synchronous motor has significant changes in motor parameters under various working conditions, making it difficult to apply the inverse system and differential geometry methods in practice.

Although the neural network inverse method solves the thorny problem that the inverse model is difficult to obtain in the inverse system method, the neural network has local minimum problems, slow learning speed, long training time, difficulty in extracting ideal samples, and difficult optimization of the network structure. Decoupling control effect of bearingless permanent magnet synchronous motor based on neural network inverse method is not ideal

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