Modeling of VCM-DDV and control simulation

作者：Wu S^*; Kang R; Yu J; Jiao Z

来源：Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(3): 342-345.

• AMESim
• Direct drive valve
• Linear quadratic regulator
• Nonlinear compensator
• Simulink
• Voice coil motor

The characteristic of a new type voice coil motor-direct drive valve (VCM-DDV) was investigated based on the co-simulation environment of AMESim and Simulink. By using AMESim the VCM-DDV nonlinear model and hydraulic environment have been set up. By using Simulink the digital controller mode has been set up. A strategy of divide the VCM-DDV model into linear part and nonlinear part was proposed. Regards the nonlinear part as a disturbance factor when derive the linear state space model, the disturbance as one of states in space state vector has been set up. A full state observer was designed to estimate the spool position, velocity and the disturbance. Then a linear quadratic regulator (LQR) state feedback control algorithm with a nonlinear compensator was applied. The simulation result demonstrates this control algorithm improve steady precision and dynamic performances both.