Kabushiki Kaisha Yaskawa Denki

Masaru Nakano

Tadashi Okubo

Yasuhiko Kaku

Wennong Zhang

A position controller for motors for increasing the position loop gain of a full-close control system without causing recurrence of vibration. The controller where a position signal representing the position of a movable table and outputted from straight-line motion position sensing means attached to a straight-line motion mechanism is used as a position feedback signal comprises differentiating means ( ) for differentiating a straight-line motion position signal and outputting a straight-line motion speed signal, subtracting means ( ) for calculating the difference between a speed command signal and the straight-line motion speed signal, integrating means ( ) for integrating a difference signal outputted form the subtracting means, proportional gain means ( ) for receiving the output signal from the integrating means, and adding means ( ) for adding the output signal form the proportional gain means to the speed command signal and outputting a new speed command Vr.

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Kitakyushu, Japan

Masaru Nakano