文档介绍：模糊规则的PID控制论文
宁夏理工学院毕业论文
摘要
模糊控制是以模糊集合理论、模糊语言变量以及模糊逻辑推理为基础的一种计算机控制。它处理的问题可能难以靠解析求解,需要采用复杂的数值计算方法。由于模糊逻辑的迅速推广应用,Math Works公司已经添加了模糊逻辑控制工具箱。利用MATLAB进行仿真就是比较合理的选择。而PID控制器具有结构简单、容易实现、控制效果好、鲁棒性强等特点,是迄今为止最稳定的控制方法。它所涉及的参数物理意义明确,理论分析体系完整,并为工程界所熟悉,因而在工业过程控制中得到了广泛应用。从实际需要出发,一种好的PID控制器参数整定方法,不仅可以减少操作人员的负担,还可以使系统处于最佳运行状态。因此,对PID控制器参数整定法的研究具有重要的实际意义。进行传统的模拟和数字PID控制算法,并对传统的PID控制算法进行微分项和积分项的改进,学****了几种比较普遍运用的方法,如不完全微分PID控制算法、微分先行、遇限消弱积分PID控制算法等。两者结合构成的模糊PID控制仿真研究表明模糊PID控制器具有在控制过程的前期阶段具有模糊控制器的优点,而在控制过程的后期阶段又具有PID调节器的所有优势,是一种性能优良的控制器。
关键词:模糊集合理论;PID控制;控制算法;参数整定;性能优良
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宁夏理工学院毕业论文
Abstract
Fuzzy control based on fuzzy set theory, fuzzy linguistic variables and fuzzy logic control based on puter. It may be difficult to deal with the problem solved by the resolution required the use plex numerical methods. Since the rapid popularization and application of fuzzy logic, Math Works has added a fuzzy logic control toolbox. Simulation using MATLAB is a reasonable choice. The PID controller has simple structure, easy to implement, control effect, robustness and other properties, is by far the most stable control. It involves a clear physical meaning of parameters, theoretical analysis system integrity, and engineering are familiar with, so in the industrial process control has been widely used. From the actual needs, a good tuning method of PID controller parameters can not only reduce the burden on operators, but also can make the system running at its best. Therefore, PID Controller Parameters Tuning of the study has important practical significance. The traditional analog and digital PID control algorithm, the traditional PID control algorithm and differential term and the integral term for the improvement of learning a few of the monly used methods such as PID control algorithm is not fully differential, differential first, the case of limited consumer Weak integral PID control algorithm. Combination of fuzzy PID control form simulation shows that fuzzy PID controller to contr