CAJ | 학술논문

为全转速范围内消除磁悬浮转子不平衡质量产生的不平衡振动力，提出基于相移陷波器的不平衡振动全频自适应控制方法。直接以构造的轴承力作为相移带通滤波器输入，将滤波器输出反馈至控制系统构成相移陷波器，达到消除振动力目的。该过程无需考虑功放低通特性对同频成分影响；通过对系统灵敏度函数理论分析，在不同转速下自适应调节相移角，实现全转速范围内系统稳定。结果表明，该方法能在全频范围内有效地消除同频轴承力。
위전전속범위내소제자현부전자불평형질양산생적불평형진동력，제출기우상이함파기적불평형진동전빈자괄응공제방법。직접이구조적축승력작위상이대통려파기수입，장려파기수출반궤지공제계통구성상이함파기，체도소제진동력목적。해과정무수고필공방저통특성대동빈성분영향；통과대계통령민도함수이론분석，재불동전속하자괄응조절상이각，실현전전속범위내계통은정。결과표명，해방법능재전빈범위내유효지소제동빈축승력。
The mass unbalance of high-speed magnetically suspended rotor causes unbalance force,which induces synchronous vibration.To suppress the vibration effectively within the operating speed range,a method based on a phase-shift notch filter was proposed.The control strategy of the method is that the magnetic bearing force was calculated and taken as the input of the phase-shift band-pass filter and the output of the filter was fed back to the original system,in which the low-pass characteristic of power amplifier doesn't need to be considered.Meanwhile,based on the theoretical analysis on the sensitivity function of the overall control system,a stable system in the rotating speed range was achieved based on the adaptive adjustment of phase shift in the band-pass filter with respect to rotor speed.The experimental results show the effectiveness of the proposed approach,which can reduce the synchronous magnetic bearing force within the whole frequency range.