METHOD FOR IMPROVING ACCURACY OF POSITION CONTROL SYSTEM AND POSITION CONTROLLER

摘要

PROBLEM TO BE SOLVED: To improve the control accuracy of a position control system by canceling the offset of a D/A converter and an A/D converter. SOLUTION: In this position control system for controlling the position of a motor 10 by combining a position controller 1B for outputting a speed command through a D/A converter 5 with a speed controller 20 for inputting the speed command through an A/D converter 6, the inputs of the D/A converter 5 are sampled the prescribed number of times in a state that the motor 10 is stopped and averaged and added to the output of a position controller 4 arranged in the position controller 1B.