基于时滞时间挖掘的自适应模糊控制器的设计

发布时间：2018-09-10 21:14

【摘要】：时滞现象是一种时间上的延迟,是一种普遍存在于我们的日常生活、工业生产和科学研究中现象,其研究是当前控制界的一个热门课题之一,更是控制理论应用的一个重要领域。通过分析控制对象的输入输出特性,以数据挖掘技术为基础,进行了被控对象时滞时间及惯性参数的挖掘;同时,以挖掘参数为依据,进行了模糊控制器及自适应模糊控制器的设计。首先,进行了数据采集准备,通过对不同时滞参数的一阶时滞控制对象进行控制,并采集参数,进行了时滞控制对象的数据采集;其次,设计参照曲线并求挖掘曲线的相似度。以相似度为输入,控制对象参数为输出,设计模糊神经网络进行时滞参数及控制对象参数的挖掘;然后,运用蚁群算法,判断变时滞控制对象的时滞时间变化点,进行变时滞参数的挖掘模型的建立;运用二倍体遗传算法进行时滞系统和变时滞系统的模糊控制器的设计,其中变时滞系统时滞参数的变化以干扰处理,求其pareto最优解集;最后,通过对变时滞系统的时滞变化分析,设计了自适应模糊控制器,实现控制对象的自适应模糊控制,并以焦炉控制系统为研究对象,验证提出的自适应模糊控制器设计方法的有效性。仿真数据表明,自适应模糊控制器设计方法有效的提高了时滞系统的控制器设计效率和控制精度。
[Abstract]:The phenomenon of time delay is a kind of delay in time, it is a common phenomenon in our daily life, industrial production and scientific research, and its research is one of the hot topics in the field of control. It is also an important field in the application of control theory. By analyzing the input and output characteristics of the control object, based on the data mining technology, the time-delay time and inertia parameters of the controlled object are mined, and the mining parameters are taken as the basis. The design of fuzzy controller and adaptive fuzzy controller is carried out. First, the data acquisition preparation is carried out, the first order time-delay control object with different time-delay parameters is controlled, and the data acquisition of the time-delay control object is carried out. Secondly, the reference curve is designed and the similarity of the mining curve is obtained. Taking similarity as input and control object parameter as output, fuzzy neural network is designed to mine time-delay parameters and control object parameters. Then, ant colony algorithm is used to judge the time-delay time change point of variable time-delay control object. The fuzzy controller of time-delay system and variable time-delay system is designed by using diploid genetic algorithm, in which the variation of time-delay parameter is dealt with to deal with the disturbance, and the pareto optimal solution set is obtained. Finally, the adaptive fuzzy controller is designed to realize the adaptive fuzzy control of the control object, and the coke oven control system is taken as the research object through the analysis of the time-delay variation of the time-varying system. The effectiveness of the proposed adaptive fuzzy controller design method is verified. The simulation results show that the design method of adaptive fuzzy controller can effectively improve the design efficiency and control accuracy of the time-delay system.
【学位授予单位】：华北理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP273.4

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