Patent ID: 8463566
Filing Date: 2013-06-11
Classification: F16D,H01F

Abstract:
1. A method of estimating force output of a solenoid assembly having a solenoid coil and a corresponding armature upon which the solenoid coil exerts a magnetic solenoid force, the method comprising: providing the solenoid coil and the corresponding armature; measuring a plurality of calibration data points of magnetic solenoid force resulting in a plurality of measured calibration force values; measuring a plurality of calibration data points of current being drawn by the solenoid coil resulting in a plurality of measured calibration current values; measuring a plurality of calibration data points of voltage being supplied to the solenoid coil resulting in a plurality of measured calibration voltage values; estimating a plurality of model parameters of the solenoid coil based on the measured calibration voltage and current values resulting in a plurality of estimated model parameters; measuring a plurality of data points of current being drawn by the solenoid coil resulting in a plurality of measured current values; measuring a plurality of data points of voltage being supplied to the solenoid coil resulting in a plurality of measured voltage values; and estimating the magnetic solenoid force exerted upon the corresponding armature based on the pluralities of measured voltage and current values, resulting in an estimated force value.