Harmonic Suppression Method and System for Maglev Rotor Vibration with Multiple Notch Filters in Parallel

A magnetic levitation rotor and harmonic suppression technology, which is applied in the control/adjustment system, mechanical oscillation control, non-electric variable control, etc., can solve the problems of not being able to guarantee closed-loop stability and affecting closed-loop stability, and achieve superior harmonic vibration suppression effect, ensuring stability, and suppressing the effect of harmonic vibration

Active Publication Date: 2021-08-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

Multi-notch filters are usually used to suppress harmonic currents. However, multi-notch filters have the same structure and parameters, and closed-loop stability cannot be guaranteed in the entire speed range.
Since different harmonics cross over a wide speed range, when a notch filter is inserted into the baseline system, it inevitably affects the closed-loop stability

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  • Harmonic Suppression Method and System for Maglev Rotor Vibration with Multiple Notch Filters in Parallel
  • Harmonic Suppression Method and System for Maglev Rotor Vibration with Multiple Notch Filters in Parallel
  • Harmonic Suppression Method and System for Maglev Rotor Vibration with Multiple Notch Filters in Parallel

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[0104] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention All modifications of the valence form fall within the scope defined by the appended claims of the present application.

[0105] A method for suppressing vibration harmonics of a magnetic suspension rotor with multiple traps connected in parallel. The research object magnetic suspension rotor is suspended together by two radial magnetic bearings and a 3-degree-of-freedom axial magnetic bearing. The former is used to control the two radial translational movements of the rotor. A three-degree-of-freedom magnetic bearing is used for two radial rotational movements. Since translational mot...

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Abstract

The invention discloses a method and system for suppressing vibration harmonics of a magnetic levitation rotor with multiple traps connected in parallel. The signal extraction point of the device is placed at the input end of the magnetic levitation controller, and the signal insertion point of the parallel phase shift notch filter is placed at the displacement error signal. The invention is aimed at the magnetic levitation rotor, considering the influence of rotor mass imbalance and sensor vibration, and establishing a harmonic The magnetic levitation rotor dynamics model of wave disturbance effectively suppresses the different frequency disturbance components of the harmonic current at the variable speed frequency by connecting multiple traps with different phase shifts in parallel, thereby effectively suppressing the harmonic vibration and ensuring the closed-loop stability of the system at the same time. And it has reference significance to the harmonic suppression problem under the condition of variable speed of the magnetic levitation-rotor system.

Description

technical field [0001] The invention relates to a magnetic levitation rotor control system with multiple traps in different phases connected in parallel, so as to obtain superior harmonic current suppression effect in the full speed range, thereby effectively suppressing harmonic vibration. The invention belongs to the field of harmonic vibration suppression of a magnetic suspension-rotor system. Background technique [0002] Due to the advantages of non-contact, low power consumption and long life, the maglev flywheel rotor has become a hot spot in the study of satellite stability. In order to obtain ultra-high-precision satellite attitude control performance, it is very necessary to reduce the unnecessary vibration force of the maglev rotor as much as possible. Unwanted vibratory forces in electromagnetic bearing-rotor systems are mainly caused by harmonic currents, which are a common problem in magnetic levitation rotor systems and pose a potential threat to system stabi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D19/02
CPCG05D19/02
Inventor 彭聪刘晓悦江驹
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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