| 摘要 |
PURPOSE:To minimize the disturbance of characteristics of a servo loop which is caused by the external impacts given to an electronic equipment, by supplying the external impact detecting signal to the servo loop as a feedforward servo signal. CONSTITUTION:A servo circuit contains a means 8 to be controlled and consisting of a movable part to be provided to an electronic equipment 1, a servo loop 9 which applies the feedback servo to the means 8, and an external impact detecting means 3. The external impact detecting signal received from the means 3 is supplied to the loop 9 as a feedforward servo signal 10a. Thus the disturbance of the servo characteristics can be deleted with high responsiveness and therefore the follow-up performance of a servo system can be improved.
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