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A Method for Suppressing Odd Harmonic Vibration of Magnetic Suspension Rotor Based on Hybrid Odd Repeat Controller

A magnetic levitation rotor and repetitive controller technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problem of attenuation of harmonic current suppression effect of repetitive controllers, sensitivity to unconsidered changes, and dynamic performance of the control system Bad question

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

However, the repetitive control algorithms applied to the maglev rotor system are all based on the condition that the fundamental frequency of the current is constant to complete the inner membrane design, and basically do not consider the structure itself is very sensitive to the change of the fundamental frequency of the current and the problem of poor dynamic performance of the control system, resulting in When the current fundamental frequency perturbs, the harmonic current suppression effect of the repetitive controller attenuates

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  • A Method for Suppressing Odd Harmonic Vibration of Magnetic Suspension Rotor Based on Hybrid Odd Repeat Controller
  • A Method for Suppressing Odd Harmonic Vibration of Magnetic Suspension Rotor Based on Hybrid Odd Repeat Controller
  • A Method for Suppressing Odd Harmonic Vibration of Magnetic Suspension Rotor Based on Hybrid Odd Repeat Controller

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Embodiment Construction

[0069] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0070] Such as figure 1 As shown, the implementation process of an odd-order harmonic vibration suppression method for a maglev rotor system based on a hybrid odd-order repetitive controller is: firstly, a maglev rotor dynamics model containing rotor mass imbalance and sensor harmonics is established; then a Odd-order harmonic vibration suppression method for maglev rotor system based on hybrid odd-order repetitive controller;

[0071] Step (1) Build a maglev rotordynamics model with mass imbalance and sensor harmonics

[0072] The schematic diagram of the magnetic levitation rotor system is as follows: figure 2 As shown, it includes a displacement sensor 1, a radial magnetic bearing coil 2, an axial magnetic bearing coil 3, a magnetic levitation rotor inertial axis 4, a magnetic levitation rotor geometric axis 5, and a magnetic levitation r...

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Abstract

The invention discloses a method for suppressing odd-order harmonic vibration of a magnetic levitation rotor based on a hybrid odd-order repetitive controller. Firstly, the dynamics model of the maglev rotor including rotor mass unbalance and sensor harmonics is established, and secondly, the odd harmonic current suppression method of the maglev rotor based on the hybrid odd repetition controller (hereinafter referred to as HORC) is adopted. The HORC is composed of a second-order endometrial structure for odd harmonic frequency suppression and a modified resonance controller (hereinafter referred to as MRSC) in parallel. HORC can improve the harmonic suppression capability of the maglev rotor system under harmonic frequency perturbation, that is, improve the system control robustness under harmonic frequency perturbation. By suppressing the odd harmonic current component generated by the magnetic bearing coil in the magnetic levitation rotor, the suppression of the odd harmonic vibration of the magnetic levitation rotor system with rotor mass imbalance and sensor harmonics is realized.

Description

technical field [0001] The present invention relates to the technical field of harmonic vibration suppression of magnetic levitation rotors, in particular to a method for suppressing odd harmonic vibrations of a magnetic levitation rotor system based on a hybrid odd repetitive controller HORC (Hybrid Odd Repetitive Controller, HORC), which is applied to a magnetic levitation rotor system Vibration suppression provides technical support for the application of maglev control moment gyro on the "ultra-quiet" satellite platform. Background technique [0002] In the Control Moment Gyroscope (CMG), the electromagnetic force of the magnetic bearing realizes the stable suspension of the rotor. Because there is no mechanical friction between the rotor and the stator, magnetic bearings have many advantages compared with mechanical bearings: first, there is no mechanical friction between the magnetic levitation rotor and the stator, and the speed of the CMG flywheel can be greatly incr...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 崔培玲韩东张国玺刘志远许涵
Owner BEIHANG UNIV
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