Electricity: motive power systems – Positional servo systems
Patent
1992-09-23
1993-09-28
Ip, Paul
Electricity: motive power systems
Positional servo systems
318561, 318609, 318610, 3185681, 364157, 364163, F15B 900
Patent
active
052489213
ABSTRACT:
In a control device for controlling a servo motor driving a robot arm, a target position command signal is input to a first operation section, which generates a speed command value for the speed feedforward. The target position command signal is also input to a delay section. A target position command signal delayed by a time period is obtained by the delay section and supplied to a second operation section. A positional deviation between the target position command signal and a position feedback signal is calculated by the second operation section. The obtained positional deviation is input to a third operation section and generated as a speed compensation command signal. A speed command signal obtained by addition of the speed feedforward signal and the speed compensation command signal is supplied to a servo driver for driving the servo motor. As a result, the time lag in the response of a system of the controlled system after the servo driver can be compensated for and an error in the positional deviation or the speed command signal can be prevented from being increased.
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Izume Takatomo
Kato Masamichi
Yumita Kouichi
Ip Paul
Kabushiki Kaisha Toshiba
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