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:
Oct. 31, 1989
Filed:
Mar. 27, 1987
Makoto Gotou, Nishinomiya, JP;
Shigeaki Matsubayashi, Sakai, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A control system has a detecting block for obtaining a detected signal corresponding to a controlled variable of a controlled system and a controlling block for supplying the controlled system with a control signal corresponding to the detected signal. The controlling block comprises an error block for producing an error signal corresponding to the detected signal at a detecting block, a memorizing block having a plurality of memorized values corresponding to the error signal, an output block for producing the control signal by mixing the error signal and one or more memorized values of the memorizing block and a adapting block for changing the number of a plurality of memorized values of the memorizing block according to a frequency of fluctuation of a disturbance source. The memorizing block renews the memorized values sequentially and periodically with a value corresponding to a mixed value of the error signal and a set of N memorized values, the N memorized values having been renewed at intervals of L renewing cycle periods, where each of N and L is an integer at least equal to 2.