Research on the Nonlinear Characteristic of Flow in the Electro-Hydraulic Servo Pump Control System

In an electro-hydraulic servo system, the system flow is used as intermediate variable to control output displacement/force/speed of actuator, and it plays role a medium for energy transmission conversion. Therefore, essence state actuator. The purpose this paper study non-linear characteristics pump pave way high-performance system. Based on partition idea, divided into dead zone, load saturation zone. We establish mathematical model hydraulic analyze effect nonlinear motor positive displacement characteristics. focus effects shear internal leakage, pressure difference oil compression, rotation friction, torque reserve rate output, under different working conditions. provide theoretical basis high-precision strategy