Electricity: motive power systems – Positional servo systems – Program- or pattern-controlled systems
Patent
1991-03-13
1993-03-16
Ip, Paul
Electricity: motive power systems
Positional servo systems
Program- or pattern-controlled systems
318573, 318569, 11212112, 3644743, G05D 300, G05B 1924
Patent
active
051947900
ABSTRACT:
A servo motor control device which performs suitable interpolation when given an external move command and for setting a target position on each coordinate axis is provided. The device comprises a revolution controller and a position detector for each axis of movement as well as a control gain controller. The revolution controller controls the number of revolutions of each of the servo motors involved using a control gain set individually for each coordinate axis and in accordance with a deviation between the current position of an object and a target position thereof. Based on control response delays which occur relative to each axis, the control gain controller changes a control gain individually set for each coordinate axis. In turn, the revolution controller controls the revolutions of each servo motor using the changed control gain. For any coordinate axis having no response delay, the control gain controller leaves a reference control gain unchanged. In this manner, the speed and number of revolutions of the servo motors are controlled so as to move the object to the target position.
REFERENCES:
patent: 4941104 (1990-07-01), Teshima et al.
Brother Kogyo Kabushiki Kaisha
Ip Paul
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