Controller

Details Controller Controller

2007-03-06

2007-03-06

Masih, Karen (Department: 2837)

Electricity: motive power systems

Constant motor current, load and/or torque control

C318S651000, C318S006000, C318S007000, C318S434000, C318S560000, C318S561000

Reexamination Certificate

active

11287336

ABSTRACT:
Disclosed is a controller for restraining vibration of a driven element driven by a servomotor. The driven element driven by the servomotor is provided with acceleration detecting means. A correction value is obtained by multiplying a detected acceleration value detected by the acceleration detecting means by a coefficient. Correction is made by subtracting the correction value from a velocity command, and velocity feedback control is executed in a velocity control processing section to obtain a current command. Further, the servomotor is driven by current control processing, whereupon the driven element is moved. If the detected acceleration value is increased by vibration of the driven element, the velocity command is corrected to restrain the vibration, so that the vibration of the driven element can be restrained. Processing time can be shortened to restrain the vibration of the driven element by executing the correction of the velocity command based on the detected acceleration value for each velocity control period.

REFERENCES:
patent: 2002/0135928 (2002-09-01), Aikawa et al.
patent: 2005/0094309 (2005-05-01), Lee
patent: 2005/0162111 (2005-07-01), Tsutsui
patent: 6-91482 (1994-04-01), None

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