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2008 SICE Annual Conference
This paper presents an improvement method of repetitive controller based on perfect tracking control (PTC) in order to reject variance repeatable runout (RRO) of hard disk drive. Authors' group proposed the repetitive PTC (RPTC) with switching mechanism. RPTC is constructed by using periodic signal generator (PSG) and PTC. The PSG works to make feedforward signal from the periodic disturbance and the PTC generates control input to cancel the periodic error in steady-state. However, we have notdoi:10.1109/sice.2008.4655097 fatcat:2ejbwcqobrcg7gxt3jzg3saauu