Invention Grant
US07660211B2 Servo control apparatus, servo control method, optical disc apparatus and video camera recorder 失效
伺服控制装置,伺服控制方法,光盘装置和摄像机

Servo control apparatus, servo control method, optical disc apparatus and video camera recorder
Abstract:
A servo control apparatus includes: a drive section that applies a thrust to move a driven object; a storage section that stores a control circuit output initial value; an approaching control section that moves the driven object toward a target position; an error signal detection section that detects an error signal varying according to a difference between the position of the driven object and the target position; a start position calculation section that calculates a start position of a servo control process; an arrival detection section that detects whether the driven object reaches the start position; a control circuit initial value calculation section that calculates a control circuit initial value of a control system and supplies it to a control circuit of the control system; and a servo control starting section that starts the servo control process when detecting that the driven object has reached the start position.
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