Feedback-dissipative Hamiltonian adaptive control system for radial hybrid magnetic bearings

Abstract

The invention discloses a radial mixed magnetic bearing feedback dissipation Hamiltonian adaptive control system. Displacement deviation, load torque and expected rotary speed are jointly input to a stable balance point calculation module; the output of the stable balance point calculation module is connected with a feedback dissipation Hamiltonian speed controller, a 2 / 3 conversion module, a PWMinverter, a current tracking type inverter and a radial mixed magnetic bearing in series in sequence; the output of the feedback dissipation Hamiltonian speed controller is a feedback controlled quantity; the output of the PWM inverter is connected with the feedback dissipation Hamiltonian speed controller through the 2 / 3 conversion module; the feedback dissipation Hamiltonian speed controller isconnected with a flux linkage adaptive updating law module; the target function of the system is established into a Hamiltonian function; based on a dynamic closed-loop system under the target function and by combination of a proper feedback control law, the flux linkage change value can be estimated quickly, quick and stable system rotary speed realization can be achieved, and requirement of thecontrol precision degree is satisfied.

Description

technical field [0001] The invention belongs to the field of magnetic suspension bearings without friction and non-mechanical contact, in particular to a control system for regulating and controlling the bearing. Background technique [0002] As a new type of bearing, magnetic bearing, combined with flywheel energy storage technology, eliminates the mechanical friction between flywheel and bearing, and has excellent characteristics such as low power consumption and ultra-high-speed operation. Among them, the radial hybrid magnetic bearing is a hybrid magnetic bearing that can realize the control of two degrees of freedom in the radial direction at the same time. Compared with the active magnetic bearing, it has the advantages of high precision, excellent stiffness performance, adjustable suspension force, etc.; The flux is generated by the control coil, and the bias flux is generated by the permanent magnet, so it has the advantages of low cost, long life, and good vibration...

AI Technical Summary

Problems solved by technology

The factors considered in this method are not comprehensive. Although it can suppress the gyroscopic effect of the system to a certain extent and improve the robust performance of the system, the implementation steps are too cumbersome, the design is complicated, the amount of calculation is large, and it is affected by hardware conditions, so it is not easy to implement in engineering.

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