Patent ID: 6657411
Filing Date: 2003-12-02
Classification: G05B,H04N

Abstract:
A position controller that receives a position command signal representing a target position to move a subject and feeds back a velocity signal representing a velocity of a movement of the subject to the position command signal at a feedback gain to adjust transient response characteristics of the movement of the subject with respect to the position command signal while moving the subject in accordance with the position command signal, the position controller comprising:a test signal generator for generating a test signal of a predetermined waveform; an input switcher for switching an input to receive the test signal instead of the position command signal; a waveform reader for reading a waveform of a position signal representing a present position of the subject on the movement of the subject in response to the test signal; and a feedback gain adjuster for adjusting the feedback gain of the velocity signal so that the waveform of the position signal responsive to the test signal becomes a predetermined form, wherein the subject is a lens in a lens device for a TV camera, the lens being position-controlled by operating a motor.