【作者】 赵玉清；

【导师】 杨洁明； 田慕琴；

【作者基本信息】 太原理工大学 ， 机械电子工程， 2004， 硕士

【摘要】 风阀自动控制一直是跳汰机控制的难点，而风阀控制性能的好坏直接影响着床层的分层效果，因此，对风阀控制的研究尤为重要。现场跳汰机均处于正常生产状态，用其要进行大量的实验研究，势必会影响选煤厂的正常生产秩序，将导致一定程度的经济损失，这是选煤厂所不能接受的。为此，本文设计一种基于液压伺服控制的实验室跳汰机装置，对跳汰机风阀工作状态进行模拟，从而为风阀自动控制，跳汰制度的改进提供实验上的支持。 本文所设计的实验室跳汰机采用的是活塞液压缸式结构，由于其具有非线性往复运动和负载时变等特征，难以确定其精确的动力学模型，所以提出了用模糊PID控制方法来实现对其控制。 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控制器的结构和设计。然后分析了单室跳汰液压伺服装置的组成、结构，介绍了跳汰工作原理及 太原理工大学硕士研究生学位论文系统的工作过程，建立单室跳汰伺服系统的模型。在此基础上设计了适用于单室跳汰伺服系统的模糊P功控制器，利用MATLAB进行仿真，并对控制效果进行了详细的分析。最后通过实验室实验进一步验证了该控制器的控制效果，给出了主要的模拟脉动水流曲线，为现场风阀控制改进提供了必要的实验支持。更多还原

【Abstract】 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.更多还原