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:
Nov. 11, 2008
Filed:
Jul. 27, 2005
Seitaro Ohta, Fukuoka, JP;
Hiroshi Nakamura, Fukuoka, JP;
Seitaro Ohta, Fukuoka, JP;
Hiroshi Nakamura, Fukuoka, JP;
Kabushiki Kaisha Yaskawa Denki, Fukuoka, JP;
Abstract
An object of the invention is to provide a servo control device capable of making zero the positional deviation the positional deviation at a constant speed as well as the positional deviation at a constant acceleration or at constant acceleration and jerk, thereby providing a high-precision follow-up response. In order to solve this problem, the servo control device according to the invention includes a position controller () for generating a speed command that matches the motor output with a target position, a feed-forward controller () for adding a signal obtained by multiplying the differential of a target command by a gain and a signal obtained by multiplying the second-order differentiation of the target command by a gain and generating a speed feed-forward signal, and a speed controller () for performing I-P or PI control of the motor ().