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Adaptive Compensation of Contact‐Induced Vibration in High Density HDD Servo Systems Using Phase Lead Peak Filter Method
Author(s) -
Xu JianXin,
Huang Deqing,
Venkataramanan Venkatakrishnan,
Huynh The Cat Tuong
Publication year - 2013
Publication title -
asian journal of control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.769
H-Index - 53
eISSN - 1934-6093
pISSN - 1561-8625
DOI - 10.1002/asjc.726
Subject(s) - control theory (sociology) , transfer function , vibration , servomechanism , compensation (psychology) , servo , bandwidth (computing) , filter (signal processing) , controller (irrigation) , engineering , closed loop transfer function , computer science , control engineering , acoustics , physics , agronomy , control (management) , artificial intelligence , mechanical engineering , psychology , telecommunications , electrical engineering , psychoanalysis , biology
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.