Patent ID: 7035034
Filing Date: 2006-04-25
Classification: G11B

Abstract:
1. A control device comprising: an actuator; a servo control unit coupled to the actuator; a switch having a first terminal and a second terminal, wherein the first terminal of the switch is coupled to the actuator; a correction signal generation unit having an output coupled to the second terminal of the switch; and a correction signal control unit coupled to the switch for controlling the switch; and wherein the correction signal generation unit comprises: a first linear acceleration sensor; and a second linear acceleration sensor; and wherein the servo control unit, the correction signal generation unit, and the correction signal control unit are configured to cooperatively perform the following operations: interrupting sampling in the servo control unit; determining whether a condition to perform an error recovery process is established; and if not, resuming servo sampling; and if so, calculating an optimum gain k determining whether k and if not, resuming servo sampling; and if so, determining whether the effect of supplying a correction signal to a servo loop exceeds a refererence value S and if not, resuming servo sampling; and if so, setting the gain of the first linear acceleration sensor at the optimum gain k supplying the correction signal to the servo loop; and resuming servo sampling.