Method for designing stability parameters of self-adapting filter of self-balancing system of magnetic suspension rotor

Abstract

The invention discloses a method for designing stability parameters of a self-adapting filter of a self-balancing system of a magnetic suspension rotor. The method comprises the following steps of establishing a radial rotation dynamics differential equation model of the self-balancing system of the magnetic suspension rotor with a gyroscopic effect; converting a real coefficient bivariate gyroscopic coupling system into a complex coefficient univariate equivalent system through complex transformation; calculating a closed-loop transfer function of the complex coefficient univariate equivalent system; determining a start angle range of a root locus, which meets the stability requirement of the self-balancing system, at a critical stable point of an imaginary axis; resolving a stability parameter intersection of the self-adapting filter; finally, determining the stability parameters of the self-adapting filter. While the rotor speed is estimated and tracked in real time so as to improve the self-balancing precision, the stability of the self-balancing system of the magnetic suspension rotor with the gyroscopic effect within a full speed range is ensured. The method disclosed by the invention is simpler and more convenient than other methods, and is especially suitable for practical magnetic suspension rotor systems.

Description

technical field [0001] The invention relates to a method for designing the stability parameters of an adaptive filter of a magnetic suspension rotor self-balancing system, which can be used in a magnetic suspension rotor self-balancing system with gyro effect, and can ensure the stability of the system in the full speed range while improving the self-balancing precision Especially suitable for maglev rotor systems with strong gyro effect such as maglev control moment gyroscope. Background technique [0002] Magnetic suspension bearing is a new type of high-performance bearing, which uses a controllable electromagnetic field to stably suspend the rotor at a given position. Compared with traditional mechanical ball bearings, magnetic suspension bearings have outstanding advantages such as active controllability of stiffness, no contact, no friction, and no need for lubrication. They are ideal support methods for high-precision, long-life high-speed rotor systems. Magnetic lev...

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Problems solved by technology

However, the existing invention does not consider the influence of the gyroscopic effect of the rotating rotor, and is only applicable to the slender shaft maglev rotor system with a weak gyroscopic effect

For magnetic levitation high-speed flat rotor systems such as magnetic levitation control moment gyroscopes and energy storage flywheels with strong gyroscopic effects, the existing stability control methods for single-variable self-balancing systems are no longer applicable.

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