Mathematical Model for a Proportional Control Valve of a Hydraulic System

A mathematical model for a proportional control valve in a hydraulic system is represented in this paper. Three proportional directional control valves are used in the hydraulic system. The mathematical model of the system is derived starting from the general basic equations of motion and flow rate taken into account, the V –notch spool shape of the proportional valve. The mathematical model proceeds with a general practical case for asymmetric hydraulic cylinder.