Magnetic suspension rotor harmonic current inhibition method based on parallel FORC and phase lag-lead compensation

A magnetic levitation rotor and harmonic current technology, applied in the direction of electrical components, adaptive control, general control system, etc., can solve the problems that parallel multiple traps cannot be suppressed at the same time, large amount of calculation, complex design, etc.

CN106610586AActive Publication Date: 2017-05-03BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2017-05-03

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Abstract

The invention discloses a magnetic suspension rotor harmonic current inhibition method based on parallel FORC and phase lag-lead compensation, and the method comprises the steps: firstly building a magnetic suspension rotor dynamical model comprising quality imbalance and sensor harmonic; secondly employing a magnetic suspension rotor harmonic current inhibition method based on a parallel FORC structure. The structure enables internal models of a harmonic at all frequencies to be converted into a plurality of parallel units with the similar structures, and quickly improves the dynamic performances of a system. The method also employs the phase lag-lead compensation to improve the stability and dynamic performances of the system. The invention proposes a method for quickly and adaptively adjusting the controller gain for a specific harmonic signal. The method achieves the dynamic optimization of the dynamic performances and stability. The method achieves the inhibition of a harmonic component of a current of a magnetic bearing coil in a magnetic suspension rotor, and is suitable for the harmonic current inhibition of the magnetic suspension rotor system with the quality imbalance and sensor harmonic.
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Description

technical field

[0001] The present invention relates to the technical field of magnetic levitation rotor harmonic current suppression, in particular to a magnetic levitation rotor harmonic current suppression method based on parallel FORC (Fractional Order Repetitive Control, FORC) and phase lag-lead compensation, which is used to control the magnetic levitation torque gyroscope Harmonic currents in the rotor system are suppressed to provide technical support for the application of magnetic levitation control moment gyroscopes on "ultra-quiet" satellite platforms. Background technique

[0002] The magnetic bearing in the control moment gyroscope CMG (Control Moment Gyroscope, CMG) uses electromagnetic force to levitate the rotor. Because there is no contact between the bearing rotor and the stator, it has the following three advantages compared with mechanical bearings: first, the speed of the CMG flywheel can be greatly increased, the size and mass of the rotor with the sam...

Examples

Embodiment Construction

[0126] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0127] Such as figure 1 As shown, the implementation process of a magnetic levitation rotor harmonic current suppression method based on parallel FORC and phase lag-lead compensation is: firstly establish a magnetic levitation rotor dynamics model including mass unbalance and sensor harmonics; then design a parallel based The harmonic current suppression method of FORC and phase lag-lead compensation; finally, a method of fast adaptive adjustment of controller gain based on the signal energy point of view is applied to realize the dynamic optimization of system dynamic performance and steady-state performance.

[0128] Step (1) Establish a maglev rotordynamics model with mass unbalance and sensor harmonics

[0129] Schematic diagram of the structure of the magnetic levitation rotor system. figure 2 As shown, it is mainly composed of a perman...