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. 30, 2004
Filed:
Feb. 04, 2003
Hiroshi Nakamura, Fukuoka, JP;
Kabushiki Kaisha Yaskawa Denki, Kitakyushu, JP;
Abstract
A controlling device of high follow-up accuracy is provided, the prediction accuracy of which is not degraded by an FF signal when the controlled object is feedforward-controlled. The prediction controlling device has a feedforward signal generation command filter for generating a future command increment which is an increment from one sampling period to the next sampling period of a target command signal from the present to a multiple-sampling future and the feedforward signal from the future target command signal. A prediction controller receives the future command increment, the feedforward signal, and a controlled object output at the past sampling time over zero sampling, and determines the future error prediction value by using a transfer function model from the feedforward signal and the control input to the controlled object output.