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湖南 文理 变速箱 箱体 加工 工艺 工装 设计 CAD

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湖南文理变速箱箱体加工工艺及工装设计(带CAD图）,湖南,文理,变速箱,箱体,加工,工艺,工装,设计,CAD

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中文摘要及关键词摘 要：本毕业论文对遗传算法进行了初步研究，并设计了一套基于实数编码的遗传算法优化程序。根据简单遗传算法的基本原理，用MATLAB语言编写程序。为了提高程序的有效性和通用性，对算法做了适当改进。通过Ackley函数测试了遗传算法程序的全局收敛性，有效解决了传统优化方法极易陷入局部最优解的难题。同时，通过典型实例，验证了该程序运行的稳定性和可靠性。本程序通用性较好，适用于求解有约束优化问题和无约束优化问题，对目标函数的适应性强。最后，用所设计的程序对实现特定函数的曲柄摇杆机构和具有急回特性的冲压机构进行了优化设计。关键词：遗传算法，程序设计，优化设计英文摘要及关键词Abstract：The pilot study on Genetic Algorithm (GA) was made in this paper, and a program of GA, decoded in real numbers, was designed. According to the basic theories of Simple Genetic Algorithms (SGA), this program was designed with MATLAB language. In order to enhance its validity and universality, some improvement on SGA was made properly. Through Ackley function, the ability of Genetic Algorithm program to search global optimum was tested. It can effectively overcome the difficulty that the traditional optimal methods easily fall into local convergence. Meanwhile, through classic examples, the stability and reliability of the program were proved. This program is available for wide range, and it is fit for non-restraint and restraint optimal questions. Additionally, its adaptability to objective function is stronger. At the end of this paper, two practical optimal design problems, a crank rocker mechanism of realizing specific function and a pressing mechanism with fast back character, were given. Keywords: Gene