High capacity of new magnetic material can be exploited only with a fine servo-positioning of the hard disk heads. This can be achieved by means of dual stage actuation, where the secondary actuator can be realized with different technologies. In this paper, the need for a secondary actuator is proven by explicitly including the non-linear friction on the VCM bearings. The use of a MEMS-based secondary actuator is analyzed, determining the dynamic model of MEMS-based dual stage actuator system. With this detailed model, a control strategy is developed and evaluated.
|Title of host publication||International Workshop on Advanced Motion Control, AMC|
|Number of pages||6|
|Publication status||Published - 2000|
ASJC Scopus subject areas