| 摘要 |
PROBLEM TO BE SOLVED: To reduce a phase loss of a controller and achieve high positional location accuracy, while guaranteeing stability of the control system, by reducing the number of excited arm modes to a single mode and by ensuring that the frequency responses of the excited arm modes of all of the heads are in phase. SOLUTION: In a drive unit of a magnetic head 4 having microactuators 8 and a main actuator thereon, the microactuators 8 on both end arms 12 are mutually driven in the same direction, while the microactuators 8 on intermediate arms 13 are driven in the direction opposite to the drive direction of the microactuators 8 on both end arms 12. COPYRIGHT: (C)2011,JPO&INPIT
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