The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 18, 2008
Filed:
Mar. 24, 2005
Yasufumi Yoshiura, Fukuoka, JP;
Yasuhiko Kaku, Fukuoka, JP;
Keisei Inoki, Fukuoka, JP;
Wennong Zhang, Fukuoka, JP;
Yasufumi Yoshiura, Fukuoka, JP;
Yasuhiko Kaku, Fukuoka, JP;
Keisei Inoki, Fukuoka, JP;
Wennong Zhang, Fukuoka, JP;
Kabushiki Kaisha Yaskawa Denki, Fukuoka, JP;
Abstract
It is an object of the invention to provide a motor control apparatus capable of ensuring a control function even for a large inertia moment ratio. In a motor control apparatus including a position detecting portion (B) of a motor () for driving a mechanism a moment of inertia of which is unknown, a speed calculating portion (C), a position control portion () for outputting a speed reference by inputting a difference between a position reference and a position of the motor, a speed control portion () for inputting a difference between the speed reference and a speed of the motor, a torque control portion () for controlling a torque of the motor from a torque reference, and an inertia variation restraining portion () for outputting the torque reference by predicting a disturbance of the motor from the torque reference and the speed of the motor, the motor control apparatus further includes a phase compensating portion () for inputting the speed reference and inputting a speed advancing a phase to the speed control portion as a new speed reference, regards the torque of the motor generated by a deviation in a set value with regard to an actual moment of inertia as a disturbance and compensates for the disturbance by the inertia variation restraining portion () and the phase compensating portion ().