MC-11 SUPPRESSING SENSITIVITY HUMP IN HDD DUAL-STAGE SERVO SYSTEMS

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概要

• 論文の詳細を見る

• In HDD single stage servo system that uses Voice Coil Motor (VCM) as the only actuator, the sensitivity hump appears unavoidably due to the Bode's Integral Theorem (BIT), resulting in amplification of disturbances at high frequency band. This paper studies the sensitivity limitation in HDD dual-stage servo system. A low relative degree micro-actuator controller and the compensation method termed "Near-Perfect Modeling" (NPM) for both poles and zeros of the micro-actuator is used to suppress the sensitivity hump to as low as possible. Experimental results show that the sensitivity hump of the dual-stage servo loop can be reduced to very close to 0 dB. As such, high frequency disturbances would not be amplified by the servo loop and the Track Mis-Registration (TMR) would be reduced.

• 一般社団法人日本機械学会の論文

著者

• Chong Tow

  A ^*(star) Data Storage Institute

• PANG Chee

  A ^*(STAR), Data Storage Institute

• WU Daowei

  School of Electrical and Electronic Engineering, Nanyang Technological University

• GUO Guoxiao

  A ^*(STAR), Data Storage Institute

• WANG Youyi

  School of Electrical and Electronic Engineering, Nanyang Technological University

• Pang Chee

  A ^*(star) Data Storage Institute

• Wang Youyi

  School Of Electrical And Electronic Engineering

• Wang Youyi

  School Of Electrical And Electronic Engineering Nanyang Technological University

• Wu Daowei

  School Of Electrical And Electronic Engineering Nanyang Technological University

• Guo Guoxiao

  A ^*(star) Data Storage Institute

関連論文

• MC-11 SUPPRESSING SENSITIVITY HUMP IN HDD DUAL-STAGE SERVO SYSTEMS
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