Simulation study of EHA with four-quadrant energy regulation based on hydraulic damping valve scheme

In this paper, a design method of electro-hydrostatic actuator(EHA) with four-quadrant energy regulation based on hydraulic scheme is proposed. The energy regulation module is designed in the aiding or reverse load four-quadrant condition of EHA Then the control strategy of the new designed system is studied. By controlling the energy control module, the generator state of the motor can be shielded under aiding load operating conditions, which effectively reduces motor heating and improves the efficiency of the system. Futhermore, intensive simulation research and analysis are carried out and the results show that the effectiveness and feasibility of the based new principle system is verified and the energy.regulation can be well implemented.