With the nonlinear and time variable characteristics of hydraulic turbine regulation system, high qualified speed adjustment system cannot be achieved with the conventional PID controller.
水轮机调节系统具有非线性和时变性的特性，传统的PID控制器无法获得高性能的调速系统。
2
Design of a fuzzy controller, to achieve a precise control of the hydraulic cylinder position by the high-speed on-off valve was based on PWM.
设计了一种模糊控制器，实现了PWM高速开关阀控液压缸位置系统的精确控制。
3
In view of the speed response requirement and the parameter time-variation of electro-hydraulic position servo system, the PID controller and the fuzzy controller are designed respectively.