Five-freedom-of-degree magnetic levitation bearing dual contrary complementary electric excitation controller

Abstract

The invention discloses a five-freedom-of-degree magnetic levitation bearing dual contrary complementary electric excitation controller. Left and right magnetic levitation bearings, a microprocessor,a first displacement differential amplifier, a second displacement differential amplifier, a third displacement differential amplifier, a fourth displacement differential amplifier, a fifth displacement differential amplifier, an isolation driving circuit, an excitation power circuit and excitation windings are included; the left magnetic levitation bearing is provided with a first displacement sensor, a second displacement sensor, a third displacement sensor, a fourth displacement sensor and a left axial displacement sensor; the right magnetic levitation bearing is provided with a fifth displacement sensor, a sixth displacement sensor, a seventh displacement sensor, an eighth displacement sensor and a right axial displacement sensor; the output ends of the first displacement differentialamplifier, the second displacement differential amplifier, the third displacement differential amplifier, the fourth displacement differential amplifier and the fifth displacement differential amplifier are both connected with the microprocessor; the left and right magnetic levitation bearings are both provided with the excitation windings; and the microprocessor, the isolation driving circuit, the excitation power circuit and the excitation windings are sequentially connected. According to the five-freedom-of-degree magnetic levitation bearing dual-contrary complementary electric excitation controller, two-freedom-degree displacement information of a symmetrical interval serves as two input signals of one displacement differential amplifier, the way number of the analog quantity needing A / D converting is reduced by half, the A / D converting time needed within one control period is reduced by half, the control period is short, and the real-time control effect is improved easily.

Description

technical field [0001] The invention relates to a dual reverse complementary electric excitation controller for a five-degree-of-freedom magnetic suspension bearing. Background technique [0002] Bearings are an important part of the transmission system. Compared with mechanical bearings, magnetic suspension bearings have many advantages. How to ensure that magnetic suspension bearings can work safely and normally, the electric excitation controller is one of the key factors. At present, there are generally two types of applications in the application of five-degree-of-freedom electric excitation magnetic suspension bearing controllers: the first type is based on discrete devices, with a small amount of integrated logic circuits, and hardware PID controllers; the second type is based on microprocessors. It is the core component, but the data processing of each displacement is independent, there is no centralized management of information, coordinated control, etc., the contr...

AI Technical Summary

Problems solved by technology

At present, there are generally two types of applications in the application of five-degree-of-freedom electric excitation magnetic suspension bearing controllers: the first type is based on discrete devices, with a small amount of integrated logic circuits, and hardware PID controllers; the second type is based on microprocessors. It is the core component, but the data processing of each displacement is independent, there is no centralized management of information, coordinated control, etc., the control cycle is long, and the efficiency is low. The above-mentioned types of controllers have their advantages, but there are also shortcomings.

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