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A Harmonic Current Suppression Method for Magnetic Suspension Rotor Based on Multiple Phase Shift Quasi-Resonance Control

A magnetic levitation rotor and quasi-resonance control technology, which is applied to gyroscope/steering induction equipment, instruments, and gyro effects for speed measurement, etc., can solve the problem that the controller is difficult to accurately suppress harmonic signals and does not consider frequency fluctuations, etc., to achieve The effect of satisfying the phase stability condition and simplifying the discretization method

Active Publication Date: 2021-07-02
BEIHANG UNIV
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Problems solved by technology

At the same time, quasi-resonant control can also improve the robustness to unavoidable frequency fluctuations in the actual system. However, the existing repetitive algorithms applied to the maglev rotor control system do not consider the frequency fluctuations and inaccurate frequency detection. It is difficult to accurately suppress the problem of harmonic signals

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  • A Harmonic Current Suppression Method for Magnetic Suspension Rotor Based on Multiple Phase Shift Quasi-Resonance Control
  • A Harmonic Current Suppression Method for Magnetic Suspension Rotor Based on Multiple Phase Shift Quasi-Resonance Control
  • A Harmonic Current Suppression Method for Magnetic Suspension Rotor Based on Multiple Phase Shift Quasi-Resonance Control

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Embodiment Construction

[0072] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0073] Such as figure 1 As shown, the implementation process of a magnetic levitation rotor harmonic current suppression method based on multiple phase-shift quasi-resonance control MQRSC is: firstly establish a magnetic levitation rotor dynamics model including mass unbalance and sensor harmonics; then design a MQRSC-based The controller performs harmonic current suppression.

[0074] Step (1) Establish a maglev rotordynamics model with mass unbalance and sensor harmonics

[0075] A fully active magnetic bearing control system generally includes a magnetic bearing controller, a power amplifier, a radial magnet, an axial magnet, a magnetic levitation rotor, and a displacement sensor. The five degrees of freedom of the magnetic levitation rotor system are controlled by active and controllable permanent magnetic bias hybrid magnetic bearings, i...

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Abstract

The invention discloses a magnetic levitation rotor harmonic current suppression method based on multiple phase-shift quasi-resonant control MQRSC (Multiple Quasi-Resonant Control with Phase-Shift, MQRSC). Then the harmonic current suppression method of the maglev rotor based on the MQRSC controller is adopted. Among them, MQRSC is composed of multiple quasi-resonant controllers, and each quasi-resonant controller corresponds to the harmonic current component at each multiplier in the rotor system. This control method can improve the stability of the system and the dynamic performance for current suppression. The mathematical form of the quasi-resonance controller in the present invention is simple and fixed, which is very convenient in practical application. The invention can suppress the harmonic component of the magnetic bearing coil current in the magnetic suspension rotor, and is suitable for the harmonic current suppression of the magnetic suspension rotor system with mass imbalance and sensor harmonics.

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 multiple phase shift quasi-resonant control MQRSC (Multiple Quasi-Resonant Control with Phase-Shift, MQRSC), which is used for The harmonic current in the maglev control moment gyro rotor system is suppressed, which provides technical support for the application of the maglev control moment gyro on the "ultra-quiet" satellite platform. 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, compared with mechanical bearings, the CMG using magnetic suspension bearings has the following four advantages: First, there is no contact and wear between the high-speed rotor and the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C19/5776
CPCG01C19/5776
Inventor 崔培玲张国玺刘志远韩东
Owner BEIHANG UNIV
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