SYSTEMS AND METHODS FOR DETECTING SOLENOID ARMATURE MOVEMENT
摘要
A method for detecting actuation of an armature associated with a solenoid includes providing a voltage potential to a solenoid coil associated with the solenoid. The method also includes measuring a current flowing through the solenoid coil. The method further includes switching the voltage potential off when the measured current reaches a predetermined maximum value. The method also includes switching the voltage potential on when the measured current reaches a predetermined minimum value. The method further includes measuring a chop period between pulses associated with the switching on and off of the voltage potential. The method also includes analyzing successive chop periods to detect armature movement and armature seating. The method further includes determining, based on the comparison of chop periods, a pull-in time of an armature associated with the solenoid.
申请公布号
WO2011084239(A3)
申请公布日期
2011.09.01
申请号
WO2010US56828
申请日期
2010.11.16
申请人
CATERPILLAR INC.;LOVE, WILLIAM, J.;SCHUMACHER, JOSEPH, W.;THOMAS, PHILIP, J.
发明人
LOVE, WILLIAM, J.;SCHUMACHER, JOSEPH, W.;THOMAS, PHILIP, J.