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:
Jul. 25, 2017
Filed:
Apr. 21, 2016
Kabushiki Kaisha Yaskawa Denki, Kitakyushu-shi, JP;
Yasufumi Yoshiura, Kitakyushu, JP;
Yasuhiko Kaku, Kitakyushu, JP;
KABUSHIKI KAISHA YASKAWA DENKI, Kitakyushu-shi, JP;
Abstract
[Problem] To enhance a speed loop gain even in a three-inertia mechanical resonance system. [Solution] A motor control apparatus () for controlling a motor, includes: a speed estimator () configured to estimate and output an equivalent rigid body speed of the motor, based on a torque command that is input to a motor model (); a first feedback gain (K) configured to obtain a first differential speed between a motor speed and the equivalent rigid body speed; a torque command generation unit () configured to generate the torque command, based on a speed deviation between a speed command and a second differential speed between the motor speed and the output of the first feedback gain (K); and a stabilizing compensator () configured to obtain the first differential speed in parallel with the first feedback gain (K), to change frequency characteristics of the first differential speed and to add the frequency characteristics to an output of the first feedback gain (K).