ADAPTIVE COMPENSATION OF CONTACT-INDUCED VIBRATION IN HIGH DENSITY HDD SERVO SYSTEMS USING PHASE LEAD PEAK FILTER METHOD

作者：Xu Jian Xin^*; Huang Deqing; Venkataramanan Venkatakrishnan; The Cat Tuong Huynh

来源：Asian Journal of Control, 2013, 15(6): 1638-1647.

DOI：10.1002/asjc.726

• Hard disk drive
• contact-induced vibration
• phase lead peak filter
• transfer function

In this paper, a phase lead peak filter (PLPF) design method is adopted to adaptively compensate for high frequency contact-induced vibration (CIV) in hard disk drive (HDD) servo systems. Based on the prior investigation of CIV, a baseline feedback controller is first employed to stabilize the servo loop, and then add-on peak filters are connected in parallel with the baseline controller to further suppress the vibrations in the high frequency range. The proposed CIV compensation scheme has a simple control structure, is capable of dealing with multiple vibration modes that may not be within the bandwidth of open-loop transfer function, and is robust to the change of CIV in frequency and magnitude. The performance of the proposed method in CIV compensation is validated by simulation and experiment.

• 出版日期2013-11