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Common-frequency vibration torque inhabitation control method based on cross decoupling wave-trapping method

A technology of vibration torque and suppression control, which is applied in the direction of adaptive control, general control system, control/regulation system, etc., and can solve the problem that positive and negative sequences cannot be extracted.

Active Publication Date: 2018-03-16
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

That is to say, the positive and negative sequences cannot be directly extracted by this real coefficient notch filter

Method used

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  • Common-frequency vibration torque inhabitation control method based on cross decoupling wave-trapping method
  • Common-frequency vibration torque inhabitation control method based on cross decoupling wave-trapping method
  • Common-frequency vibration torque inhabitation control method based on cross decoupling wave-trapping method

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Embodiment Construction

[0082] The present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation steps.

[0083] In the magnetic levitation flywheel system, the two-degree-of-freedom radial magnetic bearing is used to control the radial translation of the rotor, and the three-degree-of-freedom axial magnetic bearing is used to control the axial translation and radial torsional movement of the rotor. Among them, the two-degree-of-freedom radial magnetic bearing and the three-degree-of-freedom axial magnetic bearing are decoupled from each other. Due to the unbalanced mass, the geometrical axis of the rotor and the inertial axis do not coincide, thus causing the same frequency vibration torque in the radial torsional direction. The dynamic problem in this direction is a double-input and double-output coupling system.

[0084] The following study how to suppress the coupled vibration torque at the same frequency in the radial torsional dire...

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Abstract

The invention discloses a common-frequency vibration torque inhabitation control method based on a cross decoupling wave-trapping method. Firstly, a double-input double-output coupling control systemin the magnetic levitation rotor torsion direction is converted into a single-input single-output complex coefficient system through complex coefficient replacement, then a real number field common-frequency wave trap is popularized and applied to the complex coefficient system, the stability of the system is analyzed, and finally a common-frequency vibration torque controller under a complex field is converted to an achievement form under a real number field. Compared with a transitional real coefficient wave trap system, the operation complexity of the real coefficient wave trap system is simplified by adopting the method, and stability and robustness analysis of the coupling control system are facilitated.

Description

technical field [0001] The invention belongs to the technical field of active vibration control of a magnetic bearing system, and in particular relates to a same-frequency vibration torque suppression control method based on a cross-decoupling notch method. Background technique [0002] In the maglev flywheel system, the vibration at the same frequency is mainly caused by the mass imbalance of the rotor. The static imbalance of the mass of the rotor leads to the deviation of the center of mass and the geometric center of the rotor, and causes the vibration force at the same frequency; the dynamic imbalance of the mass of the rotor causes the inertial axis It does not coincide with the geometric axis, thus causing the same frequency vibration torque in the radial torsional direction. [0003] The two-axis dynamics in the radial translation direction of the maglev flywheel rotor are decoupled from each other, and the vibration force in the radial translation direction is handl...

Claims

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Application Information

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IPC IPC(8): G05B13/04
Inventor 彭聪蔡凯文邓智泉
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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