双模糊控制器的设计实现

在工程实际中，很多被控对象具有时变、非线性的特点，用常规的控制方法难以进行控制或者控制效果不好，为了对这类实际系统进行有效地控制，本文基于模糊控制器的基础上，设计实现了一种双模糊控制器，根据实际系统输出信号的误差大小利用两个模糊控制器分别进行控制，以改善系统的快速性和消除误差。从仿真结果来看，和常规PID控制及普通模糊控制相比，双模糊控制器有效地减小了系统稳态误差，响应时间、超调量、稳定时间等性能均优于传统的PID控制和模糊控制。

Abstract:

 Many controlled plants hare time-variable and non-linear properties in actual， and it is hard to control by normal control methods. A new kind of double fuzzy controller was designed based on fuzzy controller. Two fuzzy controller were used separately according to actual error signal of the system output so that the system response speed was improved and the error was eliminated. Compared with normal PID controller and fuzzy controller， the results show that the double fuzzy controller can reduce steady-state error of the system， other characteristics such as speed of response， overshoot and settling time are also prior to normal PID controller and fuzzy controller.