Patent ID: 7299112
Filing Date: 2007-11-20
Classification: F16K,G05D,Y10T

Abstract:
1. A method of controlling a pressure output of an electrically controlled pressure relief valve, said method comprising: obtaining a target position of said valve; determining an actual position of said valve; generating a proportional feedback term that is proportional to a difference between said actual valve position and said target valve position; generating a valve control signal based on, at least in part, said proportional feedback term, said valve control signal indicative of a force to be applied to said electrically controlled pressure relief to move said electrically controlled pressure relief valve from said actual position toward said target position such that said force to be applied to said electrically controlled pressure relief valve simulates a spring force; and applying said force to said electrically controlled pressure relief valve in response to said valve control signal such that said electrically controlled pressure relief valve provides a linear pressure output in response to a plurality of flow inputs.