Abstract:This paper presents a unified approach to track seeking and following control of a hard disk drive (HDD) dual-stage actuator (DSA) system. Based on doubly coprime factorization (DCF) method, the DSA controller and the closedloop dynamics are expressed explicitly in terms of two design parameters. This greatly simplifies the optimization of design parameters in meeting desired specifications. We then address how to use the design parameters to deal with specific problems in the DSA, i.e., control allocation for… Show more
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