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基于模糊PID控制方法的跳汰机排料系统研究
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摘要
目前跳汰机排料的控制多采用逻辑控制或常规PID控制,但这两种控制方法的局限性容易导致大排大放,跑煤等问题,因此本文提出了用模糊PID控制来代替上述两种控制方法实现跳汰机排料的自动控制。
     文中首先论述了模糊PID控制的理论基础,介绍了模糊控制的原理及模糊PID的结构和设计。然后分析了跳汰机排料系统的组成,求出了每个环节的传递函数,建立了跳汰机排料系统模型。在此基础上设计了适用于跳汰机排料系统的模糊PID控制器,利用MATLAB进行仿真,对控制效果进行了详细的分析。仿真结果表明模糊PID控制器不依赖于系统模型,在响应速度、稳态精度及对干扰的抑制能力等方面均优于常规PID,尤其适用于象跳汰机排料系统这样的非线性、大滞后且随机干扰严重钓系统。最后通过实验室实验进一步验证了该控制器的控制效果。
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.
引文
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