Magnetic suspension rotor vibration force suppression method and system based on repetitive controller and compensation

Abstract

The invention discloses a magnetic suspension rotor vibration force suppression method and system based on a repetitive controller and compensation. Firstly, a repetitive controller is adopted to suppress error interference introduced by mass imbalance and sensor interference, and then a same-frequency phase shift wave trap is adopted to compensate displacement stiffness force introduced by suppression, so that suppression of full-frequency vibration force of the magnetic suspension flywheel is realized. Compared with the existing methods, according to the invention, the fractional delay linkis adopted to improve the suppression precision of the vibration force during the sampling non-integer period; a fractional phase compensation link is adopted, so that phase compensation in a high-frequency stage is more accurate; the stability margin of the high-frequency stage is increased, meanwhile, the phase angle of the system is compensated through the variable-coefficient phase shift wavetrap, the full-frequency stability of the system is achieved, and mass imbalance and the same-frequency and frequency-doubling vibration force generated by the displacement sensor can be restrained atthe same time in a high-precision mode through the method.

Description

technical field [0001] The invention relates to the technical field of vibration control of a magnetic suspension rotor, in particular to a vibration force suppression method and system for a magnetic suspension rotor based on a repetitive controller and compensation. Background technique [0002] Because of its non-contact and non-lubricating properties, the magnetic levitation rotor system has attracted more and more attention in aerospace applications, especially in flywheels for satellite attitude control power components, especially because it can perform active vibration control. In the application process of the maglev rotor system, the vibration control of the maglev flywheel rotor is a very important task. The rotor of the maglev flywheel will have mass imbalance due to processing errors and uneven materials. The mass imbalance will cause the rotor to rotate actively at high speed. When a large unbalanced force is generated, although the rotor can be dynamically bal...

Images