公开(公告)号：US07440821B1

公开(公告)日：2008-10-21

申请号：US10751312

申请日：2004-01-02

申请人： Joseph J. Schottler ,  John C. Stafney

发明人： Joseph J. Schottler ,  John C. Stafney

IPC分类号： G05D7/00 ,  G05D11/00

CPC分类号： H02M3/156 ,  H02M2001/0009 ,  H02M2003/1555

摘要： A method of yielding the average current in a PWM driven coil for an electrohydraulic valve. The method includes transmitting a feedback signal into a Finite Impulse Response filter to take multiple signal samples in order to calculate and average value of current within one cycle. This average value is transmitted to an algorithm that generates a pulse width signal that drives the coil of the electrohydraulic valve in the next system cycle.

摘要翻译： 一种在电动液压阀的PWM驱动线圈中产生平均电流的方法。 该方法包括将反馈信号发送到有限脉冲响应滤波器中以采取多个信号样本，以便在一个周期内计算和平均电流值。 该平均值被传送到在下一个系统周期中产生驱动电动液压阀的线圈的脉冲宽度信号的算法。