球磨机智能控制及DCS的应用研究

发布时间：2018-06-17 00:25

本文选题：球磨机 + 解耦控制　；参考：《辽宁工业大学》2016年硕士论文

【摘要】：球磨机是一种在电力行业被广泛应用的粉碎设备,由于它所具有的优点一直沿用至今。但是在生产过程的发展中,它的不足和缺点也被暴露出来,其系统参数的相互影响、耦合性强以及时滞都制约其生产和发展。因此,结合球磨机制粉系统的控制特点,运用先进的控制理论以及计算机技术对此系统进行优化研究是非常有必要的,具有一定的理论意义和应用价值。本论文对中储式球磨机制粉系统的国内外发展展开综述,分析了该系统目前的发展状况和市场前景。对特定的球磨机制粉系统的三输入(给煤量、热风量、再循环风量)和三输出(入口负压、出口温度、进出口压差),分析它们之间的耦合性。由于计算复杂,根据选取的数学模型分离为两个矩阵,形成一个双输入双输出系统和一个单回路系统。针对双入双出系统,采用模糊解耦控制方案,设计了模糊控制器和解耦控制网络,来实现对球磨机的控制。引入遗传算法对其模糊控制规则表进行优化,根据适者生存的原理,进一步优化了控制器的控制策略。优化后的模糊控制器经Matlab仿真,优化的控制系统与传统的PID控制系统、原模糊控制系统相比,具有更好的控制特性以及抗干扰性。本文介绍了浙大中控JX-300XP系统,结合本设计对系统进行硬件组态和监控画面设计。在工业条件允许的情况下,该控制方案将取得良好的控制效果和生产效益。
[Abstract]:Ball mill is widely used in power industry, because of its advantages, it has been used up to now. However, in the development of production process, its shortcomings and shortcomings are also exposed. The interaction of system parameters, strong coupling and time delay restrict its production and development. Therefore, it is necessary to optimize the system with advanced control theory and computer technology combined with the control characteristics of pulverizing system of ball mill, which has certain theoretical significance and application value. In this paper, the domestic and international development of the ball mill pulverizing system is reviewed, and the present development and market prospect of the system are analyzed. The coupling between three inputs (coal supply, hot air, recirculating air) and three output (inlet negative pressure, outlet temperature, inlet and outlet pressure difference) of a specific ball mill pulverizing system is analyzed. Because of the complexity of calculation, the selected mathematical model is separated into two matrices to form a double-input double-output system and a single-loop system. The fuzzy controller and decoupling control network are designed to control the ball mill with fuzzy decoupling control scheme. Genetic algorithm is introduced to optimize the fuzzy control rule table. According to the principle of survival of the fittest, the control strategy of the controller is further optimized. The optimized fuzzy controller is simulated by Matlab. Compared with the traditional pid control system and the original fuzzy control system, the optimized fuzzy controller has better control characteristics and anti-interference. This paper introduces the JX-300 XP system of Zhejiang University, and designs the hardware configuration and monitor picture of the system. In the case of industrial conditions, the control scheme will achieve good control effect and production efficiency.
【学位授予单位】：辽宁工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TD453

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