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:
May. 30, 2006
Filed:
Jun. 02, 2003
Toshio Fuwa, Nissin, JP;
Toshio Fuwa, Nissin, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A control apparatus for an electromagnetically driven valve is provided which is applied to an electromagnetically driven valve in which a movable portion including an armature and a valve element is driven using an electromagnetic force generated by an electromagnet. This control apparatus includes a controller. This controller performs feedback control such that a value of a current which is actually supplied to the electromagnet becomes substantially equal to a value of a desired attracting current when displacing the movable portion by supplying an attracting current to the electromagnet. Further, the controller variably sets a feedback gain used in feedback control of the attracting current, based on a distance between the electromagnet and the armature.