Abstract: The design of an electrohydraulic proportional speed regulating system, using avariable vane pump, is described. The author made a state variable feedback controller with output integrator. With this controller the poles of the system are placed in the pro-determined positions. Thus the system dynamic behaviour is much improved, which lays foundation for the output integrator to secure for a zero steady state error.

Key words: 电液调速器, 磨床, 状态变量