Research Into Jigger Dischargins System Based On Fuzzy PID Control

At present, control methods of jigger discharging mostly adopt general PID controller or basic logical controller, but their disadvantages often result in some questions, such as great discharging and dropping of refined coal, etc. Based on this, replacing the two control ways, Fuzzy PID Control is proposed to realize the auto-control of jig discharging.Firstly, the basic theory of Fuzzy PID Control is discussed in the paper. The principle of Fuzzy Control and the structure and the design of Fuzzy PID Control are introduced. Secondly, the composing of the jigger discharging system is analyzed, the T-function of every part is calculated, the model of jigger discharging system is established. Based on this, Fuzzy PID Controller applied to jigger discharging system is designed with simulation by MATLAB, analysis in detail to the control effect is processed. The research shows: Fuzzy PID Controller is independent of the system model, and it is prior to general PID in response speed and stable precision and restraint ability against the interference, especially appropriate to nonlinearity and serious hysteresis and random interference system such as jigger discharging system. Lastly, the control effect of this controller is validated again by experiment in lab.