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. 05, 2002
Filed:
Mar. 25, 1999
Perry Robert Czimmek, Williamsburg, VA (US);
Danny Orlen Wright, Cobb's Creek, VA (US);
Siemens Automotive Corporation, Auburn Hills, MI (US);
Abstract
A method is provided to determine a static position of an armature of an electronically controlled solenoid device . The method provides an electronically controlled solenoid device having a first stator and a first coil operatively associated with the first stator, a second stator and a second coil operatively associated with the second stator, and an armature mounted for movement between the first and second stators. The armature defines a magnetic circuit with each of the first and second stators and their associated coils. A flux of a magnetic circuit associated with each coil is ramped in a generally linear manner over a period of time. A nominal position of the armature is defined where current in both of the coils is substantially equal. A current slope of each of the coils resulting from the associated ramped flux is observed. An offset of each current slope from the nominal position is indicative of the static position of the armature.