Patent ID: 6208497
Filing Date: 2001-03-27
Classification: F01L,F02D,G01R,H01F,H02K,H02N,H02P

Abstract:
A system for controlling an electromagnetic solenoid including an armature and one or more windings, the system comprising:a. measurement means couplable to said solenoid for obtaining a position measurement of said armature;b. means for setting a target flux associated with said solenoid as a function of said measurement; andc. means for maintaining a solenoid magnetic flux associated with operation of said solenoid near said target, said means including a circuit arrangement which detects an oscillatory slope of a current supplied to the one or more windings, which develops a ratio based on the amount of current being supplied to the one or more windings and the oscillatory slope, and which controls the amount of current with respect to the ratio.