Control method and system of magnetic suspension bearing system and relative assemblies

Abstract

This application discloses a control method of a magnetic suspension bearing system. The method comprises the following steps of when the rotor of a magnetic suspension bearing is stationary, controlling a first coil to output an electromagnetic force corresponding to the target position by a first current command value, so as to adjust the rotor to the target position; and when the rotor rotates,controlling the first coil and a second coil to output electromagnetic force corresponding to the target position by a second current command value, so as to adjust the rotor to the target position,wherein the first coil and the second coil have opposite effects. In practical applications, by adopting the solution of the application, since a single coil is used to control the magnetic bearing system when the rotor is stationary, and the stability interval is large, a protective bearing with a large inner diameter can be selected to increase the operating space of the rotor, thereby improvingthe operation performance of the magnetic bearing system. The application also discloses a control system, device of the magnetic suspension bearing system and a computer-readable storage medium, which have the above-mentioned beneficial effects.

Description

technical field [0001] The present application relates to the field of magnetic suspension bearings, in particular to a control method, system and related components of a magnetic suspension bearing system. Background technique [0002] Magnetic levitation bearing is a device that uses the principle of magnetic field to generate suction when it passes through different media, and indirectly controls the magnitude of the magnetic field force through the stator coil current, so that the rotor is suspended in a fixed position. Since the electromagnetic force of the magnetic suspension bearing is proportional to the square of the stator current and inversely proportional to the size of the air gap, the magnetic suspension bearing control system is a strongly nonlinear system; in addition, since the direction of the electromagnetic force has nothing to do with the direction of the stator coil current, the magnetic suspension The bearing usually adopts the current differential con...

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Problems solved by technology

In general, the magnetic suspension bearing system generally adopts differential coil control, but the magnetic suspension bearing system controlled by the differential coil has a small stable range when the rotor is stationary, so it is necessary to use a small inner diameter protective bearing, but the small inner diameter protective bearing will limit the operating space of the rotor. The rotor may not be able to rotate around the main axis of inertia, affecting the operation performance of the magnetic suspension bearing system

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