Journal of the Korean Society for Precision Engineering (한국정밀공학회지)
- Volume 13 Issue 5
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- Pages.131-138
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- 1996
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- 1225-9071(pISSN)
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- 2287-8769(eISSN)
Repetitive Control of Track Following Error in a Hard Disk Drive
하드 디스크 드라이브의 반복 추종 오차 제어
Abstract
This paper suggests a servo control algorithm to reduce the repeatable tracking error which is not explicitly taken into account in the design of a conventional PID controller of a computer hard disk drive. The robust stability of the repetitive control system with multiplicative modelling error is analyzed, and the controller was implemented using a fixed point DSP(Digital Signal Processor). Experimental results show that the repetitive errors are suppressed effectively by the proposed controller.
Keywords