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机械毕业设计 论文

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LW01-123@黄金分割法的参数优化设计,机械毕业设计 论文

内容简介：

摘 要 黄金分割法被广泛应用于各个领域，因此研究黄金分割法意义重大，本文主要研究影响黄金分割法对计算结果精度的因素。本文首先介绍误差的一些基本概念和黄金分割法的理论，然后通过 c语言程序来分析黄金分割法的误差，通过编写不同算法的黄金分割法 c语言程序，比较其结果及其计算过程，从而找出误差产生的原因。在这里介绍了产生误差的四种因素：算法、 e、区间和 N。通过用比较法比较两种算法，观察计算结果及过程，比较算法公式，从而得出两种算法的优劣； e的选择，通过不同 e和 N 有效数字的选择，观察计算过程及结果，针对目标函数，选 择最佳的 e 和 N 的数值；通过对区间变化的分析，找出原因。通过以上的分析计算，从而提高计算的精度，减少误差。 关键字： 黄金分割法，误差，精度，算法 nts Abstract The golden section method is widely used in various fields, the golden section method research of great significance, the paper studies the impact of golden section method of calculation accuracy factor. This paper first introduces some basic concepts of error and the theory of golden section method, and then through c language program to analyze the error of golden section method, through the preparation of different golden section method algorithm c language program, compared to the results of the calculation process and thus to find cause of the error. Here errors introduced four factors: algorithm, e, interval, and N. Comparative Law By comparing two algorithms, to observe the process of calculating the results and compare the algorithm formula, so as to arrive at the merits of two algorithms; e choice of e and N through the different choice of effective figures to observe the process and results of the calculation for the objective function, select the best value of e and N; through the change of interval analysis, to determine the cause. Analysis of the above calculation, thereby enhancing the accuracy of the calculation to reduce t