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:
Jan. 03, 1989
Filed:
Apr. 24, 1987
Shigeki Morii, Kanonshin, JP;
Keiichi Katayama, Kanonshin, JP;
Mitsubishi Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A control system for a magnetic type bearing is fed back a signal from a position sensor with respect to a floating member to effect control such as phase compensation so that the magnetic type bearing is actively employed. In order to change unstabilizing force produced by the magnetic type bearing in a specified frequency range to stabilizing force, a first signal obtained by causing the signal from the position sensor to pass through a first filter having a cut-off frequency range corresponding to a predetermined frequency range in which stabilization is to be attained and a second signal obtained by causing a signal having an opposite polarity to that of the signal from the position sensor to pass through a second filter having a passing frequency range which is substantially identical with the predetermined frequency range are added to each other and the addition signal is fed back to an electromagnet.