DEVICE HAVING CONTROL CIRCUIT

摘要

PROBLEM TO BE SOLVED: To improve an electronic circuit for compensating the vibration of disk drive and to enhance resistance against shock. SOLUTION: A device including a control circuit having a feedforward filter (1) and a controller (3) is provided. Matching between the parameter (Pff) of the device (1) and the parameter (Pc) of the controller (3) is executed during the operation of the device.