CAJ | 학술논문

提出一种转子多频振动的在线主动抑制方法，该方法利用电磁作动器向转子施加多个与转子振动频率相匹配的旋转电磁力，通过在线自寻优的方式确定电磁作动器的控制电流相位和幅值，使施加的多个频率成分的旋转电磁力能够削减转子的多频振动幅值，实现转子系统的多频振动在线抑制。首先建立了转子－轴承－电磁作动器系统动力学模型；提出一种转子系统多频振动的主动抑制方法，对该方法的有效性和可行性进行了理论推导；建立了电磁作动器控制电流相位和幅值的寻优模型，提出一种控制电流相位的整周寻优策略；随后搭建实验装置，进行了实验研究，理论推导和实验结果均表明该方法能够实现转子的多个频率成分振动的主动抑制。
제출일충전자다빈진동적재선주동억제방법，해방법이용전자작동기향전자시가다개여전자진동빈솔상필배적선전전자력，통과재선자심우적방식학정전자작동기적공제전류상위화폭치，사시가적다개빈솔성분적선전전자력능구삭감전자적다빈진동폭치，실현전자계통적다빈진동재선억제。수선건립료전자－축승－전자작동기계통동역학모형；제출일충전자계통다빈진동적주동억제방법，대해방법적유효성화가행성진행료이론추도；건립료전자작동기공제전류상위화폭치적심우모형，제출일충공제전류상위적정주심우책략；수후탑건실험장치，진행료실험연구，이론추도화실험결과균표명해방법능구실현전자적다개빈솔성분진동적주동억제。
An approach was proposed for the suppression of multi-frequency periodic vibration of rotor-bearing system with electromagnetic exciters through self-optimizing control.A control strategy optimizing the amplitudes and phases of the control signals was presented by using an on-line self-optimizing algorithm and applying multiple frequency control forces generated by electromagnetic exciters to reduce the vibration amplitudes of the rotor.A model of rotor-bearing system with electromagnetic exciters was established and an active vibration control scheme for controlling transverse vibration of the rotor under multi-frequency excitation was designed.A whole circle search algorithm about the phase of control current was proposed.The experiments for controlling multi-frequency vibration of the rotor were carried out on a rotor-bearing test rig.The experiment results indicate that the proposed method is effective in reducing the rotor vibration caused by multi-frequency forces.