Active vibration isolation by adaptive proportional control

摘要：

　　An active vibration isolation system that applies proportional controller incorporated with an adaptive filter to reduce the transmission of base excitations to a precision instrument is proposed in this work.The absolute vibration velocity signal acquired from an accelerator and being processed through an integrator is input to the controller as a feedback signal,and the controller output signal drives the voice coil actuator to produce a sky-hook damper force.In practice,the phase response of integrator at low frequency such as 2~5 Hz deviate from the 90 degree which is the exact phase difference between the vibration velocity and acceleration.Therefore,an adaptive filter is used to compensate the phase error in this paper.An analysis of this active vibration isolation system is presented,and model predictions are compared to experimental results.The results show that the proposed method significantly reduces transmissibility at resonance without the penalty of increased transmissibility at higher frequencies.

关键词： active vibration isolation proportional control adaptive filter sky-hook damper absolute vibration velocity voice coil actuator

作者: Yun-Hui Liu Wei-Hao Wu Chih-Liang Chu

作者单位: Dept. of Mechanical Engineering, Southern Taiwan University of Science and Technology,Tainan, Taiwan

会议类型: 国际会议

会议名称: 2012第八届精密工程测量和仪器仪表国际研讨会(ISPEMI2012)

会议地点: 成都

会议语种:英文

页码: 1-7

在线出版日期: 2012-08-08（万方平台首次上网日期，不代表论文的发表时间）