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Harmonic current inhibition method for magnetic suspension rotor based on frequency-domain LMS (Least Mean Square) algorithm of variable block length

A LMS algorithm, the technology of magnetic suspension rotor, applied in non-electric variable control, mechanical oscillation control, control/regulation system and other directions, can solve the problems of low precision and slow convergence speed

Active Publication Date: 2015-12-16
BEIHANG UNIV
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Problems solved by technology

The existing frequency-domain LMS algorithm has a slow convergence speed and low precision for harmonic current suppression

Method used

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  • Harmonic current inhibition method for magnetic suspension rotor based on frequency-domain LMS (Least Mean Square) algorithm of variable block length
  • Harmonic current inhibition method for magnetic suspension rotor based on frequency-domain LMS (Least Mean Square) algorithm of variable block length
  • Harmonic current inhibition method for magnetic suspension rotor based on frequency-domain LMS (Least Mean Square) algorithm of variable block length

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Embodiment Construction

[0067] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0068] Such as figure 1 As shown, the implementation process of a maglev rotor harmonic current suppression method based on variable block long-frequency domain LMS algorithm is: firstly establish a maglev rotor dynamics model including mass unbalance and sensor harmonics, and then design a maglev rotor based on variable block Harmonic current suppression method for long frequency domain LMS algorithm.

[0069] (1) Establish a maglev rotor dynamics model with mass unbalance and sensor harmonics

[0070] According to the number of active control degrees of freedom of the magnetic bearing supporting the rotor, the magnetic suspension control torque gyroscope can be divided into fully active magnetic suspension control torque gyroscope and active and passive magnetic suspension control torque gyroscope. Such as figure 2 As shown, the active an...

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Abstract

The invention discloses a harmonic current inhibition method for a magnetic suspension rotor based on a frequency-domain LMS algorithm of variable block length. Aimed at a magnetically suspended control moment gyro, a dynamics model of the magnetic suspension rotor with mass imbalance and sensor harmonic waves is established, the harmonic current inhibition method based on the frequency-domain LMS algorithm of variable block length is designed, the block length can be adjusted adaptively according to errors, and the convergence performance is improved. The method can be used to inhibit the harmonic component in current of a magnetic bearing coil in the magnetic suspension rotor, and is suitable for inhibiting the harmonic current of a magnetic suspension sub system with mass imbalance and the sensor harmonic waves.

Description

technical field [0001] The invention relates to the technical field of magnetic suspension rotor harmonic current suppression, in particular to a magnetic suspension rotor harmonic current suppression method based on variable block long-frequency domain LMS (LeastMeanSquare, LMS) algorithm, which is used for the magnetic suspension control torque gyro rotor system Harmonic currents are suppressed to provide technical support for the application of magnetic levitation control torque gyroscopes on "ultra-quiet" satellite platforms. Background technique [0002] With the continuous deepening of my country's aerospace industry, the requirements for pointing accuracy and stability of satellite platforms are getting higher and higher. The magnetic levitation control moment gyro is supported by magnetic bearings, which has the advantages of no friction, long life, and controllable active vibration. It is one of the ideal actuators for realizing "ultra-quiet" satellite platforms. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D19/02
Inventor 崔培玲崔健房建成张大川李胜
Owner BEIHANG UNIV
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