Aiming at the problem of mechanism and control algorithm complex which existed in the pump and valve combined electro hydrostatic actuator, the dual closedloop control system with pressure and rudder angle based on permanent magnet synchronous motor，fixdisplacement pump，accumulator and servo valves was adopted. The rudder angle error signal was added to the pressure control loop as a feedforward signal to raise the speed of response. The operating principle of the pump and valve combined electrohydrostatic actuator was described, and the model of each module was created and simuated with analysis. Simulation results show that the control system is simple and better in comprehensive indicator comparing with the existing control scheme, and it can be used widely in the future aircraft hydraulic system.