The Study Of The Application Of Fuzzy PID Control In The Single Room Jigger Model

The auto -control of air-valve is a difficult problem in the jigger control project, the capability of the auto-control of air-valve affects the delamination of the coal bed directly. So, it is important to study the control of the air-valve. The jigger is in productive state. Using it process large of experimental research, it's result to affect product order of the coal washiery and to bring economic lost in certain extent, which the coal washiery can't except. So, the purpose of this thesis is to design an experimental device based on hydraulic servo control to simulate the working state of the jigger air-valve, then to provide basement of experiment, with auto-control of air-valve, with modifying of jigger system.The structure of jigger at lab is piston type. Due to the non-linear reciprocation of the experimental system and thetime variation of the load, and as the accurate dynamics model is difficult to establish, fuzzy PID control to realize this goal is proposed in this thesis.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 and structure of the single room jigger's hydraulic servo system is analyzed, the jigger working principle and the process of system are introduced, the model of single room jigger servo system is established. Based on this, Fuzzy PID Controller applied to single room jigger servo system is designed with simulation by MATLAB, analysis in detail to the control effect is processed. Lastly, the control effect of this controller is validated again by experiment in lab. Primary simulating fluctuating flow curve has painted, it provided necessary experiment sustain with improving on air-valve controlling at locale.