《基于遗传算法的PID控制器参数优化》-毕业论文（设计）.doc

基于遗传算法的PID控制器参数优化 摘 要 PID控制器现已在工程实际中得到了广泛的应用。控制器的参数优化与系统的稳态工况有很大的联系，是控制系统设计的核心内容。因此，在目前PID控制器参数优化的研究具有十分重大的工程实践意义。 课题是以Delphi为开发平台，进行基于遗传算法的PID控制器参数优化软件的设计。本设计运用遗传算法通过对PID控制器参数的编码、适应度估计、选择、交叉和变异使其在全局范围内进行筛选达到优化参数的目的。课题中优化软件的各个控制界面是通过Delphi7.0中窗体的设计完成，而控制器参数优化中所用到的的遗传算法则通过Delphi7.0内部编程来实现的。优化软件实现了对PID控制器参数的优化，并且在画图界面中绘制出了响应的输出曲线。本课题的设计完成了基于遗传算法的PID控制器参数寻优、函数图像输出、以及函数图像打印等功能。 通过计算机仿真表明，以Delphi软件为开发平台设计的基于遗传算法的PID控制器参数优化软件具有较好的寻优效果。 关键词：PID控制器，遗传算法，参数优化，软件设计 PARAMETERS OPTIMIZATION BASED ON GENETIC ALGORITHM FOR PID CONTROLLER ABSTRACT PID controller has been widely used in the engineering practice. For optimization of the controller parameters determines the system steady-state conditions, it becomes the core of control system design. Great practical significance can be found in optimization of the PID controller parameters in present. The paper used Delphi as the development platform, based on genetic algorithm to design the PID controller parameters optimization software. Use the genetic algorithm to optimize parameters is through encoding, fitness estimation, selection, crossover and mutation in the global scope to be searched to achieve the goal of optimizing the parameters. The interface of the optimization software is designed with the form of Delphi7.0, and the controller parameter optimization in the genetic algorithm used the Delphi7.0 internal programming to carry out. The optimization software also has achieved in drawing graph interface, the output response curve. The software design is completed the PID controller parameters optimization with genetic algorithm, graph output, as well as the image printing. Through computer simulation, it is showed that use the Delphi software as development platform of genetic algorithm-based PID controller parameters optimization software can achieve better results. Key words: PID Controller, Genetic Algorithm, Parameter Optimization, Software Design 目录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc232816970 1 绪 论 PAGEREF _