Aiming at the problem of mechanism and control algorithm complex which existed in the pump and valve combined electro hydrostatic actuator, the dual closedloop control system with pressure and rudder angle based on permanent magnet synchronous motor,fixdisplacement pump,accumulator and servo valves was adopted. The rudder angle error signal was added to the pressure control loop as a feedforward signal to raise the speed of response. The operating principle of the pump and valve combined electrohydrostatic 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.
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张振,李海军,曲晓燕.泵阀联合电静液作动器建模与仿真[J].机床与液压,2016,44(11):152-155. . Modeling and Simulation of Pump and Valve Combined Electrohydrostatic Actuator[J]. Machine Tool & Hydraulics,2016,44(11):152-155