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, 2003
Filed:
Mar. 28, 2002
Ibrahim Haskara, Brownstown, MI (US);
Lawrence Mianzo, Plymouth, MI (US);
Vladimir Kokotovic, Bloomfield Hills, MI (US);
Visteon Global Technologies, Inc., Dearborn, MI (US);
Abstract
Four preferred methods are disclosed for controlling an electromagnetic valve actuator having a valve head that moves between an open position and a closed position against a valve seat, an armature coupled to the valve head, and a solenoid coil near the armature. The preferred methods include: measuring the position of the armature, estimating the speed of the armature based on the measured position of the armature, computing a desired signal based on the measured position, the estimated speed, and a reference trajectory, and controlling the solenoid coil to softly seat the armature against the solenoid coil and the valve head against the valve seat based on the computed desired signal.