The simulation results show that the tracking error of middle-convex and varying ellipse piston linear servodrivesystem can be reduced effectively by this method.
仿真结果表明，采用这种控制策略可以十分有效地减小中凸变椭圆活塞直线伺服驱动系统的跟踪误差。
2
DC servosystem is the drive unit of vibration stimulation system. As the core of servo system, undoubtedly controller plays an important role to the whole system performance.
A high precision and high performance servo-drivesystem needs a rotating speed estimation algorithm which has high accuracy, fast response and high resolution in a wide range.