Patent ID: 7474948

Claim:
A method of calibrating an unique proportional solenoid of an unique member of a predesigned class of electrohydraulic control systems that is inclusive of at least one valve controlled by a proportional solenoid that provides an output response in response to an input current, said method comprising: identifying a characteristic equation of the proportional solenoid in the electrohydraulic system, said characteristic equation including a plurality of coefficients; imbedding into a control unit for said electrohydraulic control system characteristic equation the; coupling the electrohydraulic system to a test stand; applying a plurality of currents to the unique solenoid of the electrohydraulic system; measuring the output response of the unique electrohydraulic system for each of the plurality of currents; identifying unique coefficients in the characteristic equation from the output response measurements; and flashing the coefficients in a memory of the control unit.