毕业设计（论文）-基于遗传算法的齿轮减速器模型优化设计.doc

毕业设计(论文)
基于遗传算法的齿轮减速器模型优化设计
OPTIMAL DESIGN FOR GEAR REDUCER BASED ON IC ALGORITHM
学生姓名
学院名称
专业名称
机械设计制造及其自动化
指导教师
摘要
齿轮减速器是原动机和工作机之间的减速传动装置,它广泛应用于日常生活和生产中,但传统设计中仍存在着体积过大、效率过低的问题,因此有必要对齿轮减速器进行优化设计。针对一级齿轮减速器,选取合理的设计变量,以减速器体积最小为目标建立优化设计的数学模型,并根据齿宽系数、模数、齿轮的应力和轴的弯曲强度等约束条件来确定约束函数。采用遗传算法对模型进行优化,经过实数交叉、高斯变异和可行性规则选择反复循环得出优化后的参数,经过机械校核得出优化出的参数是满足约束条件,实现了齿轮减速器体积最小的优化目标。
关键词减速器;遗传算法;优化设计;
Abstract
Gear reducer is the transmission device for speed deceleration, connecting prime motor and working machine,which has been widely used in our daily life and there still exist some problems in traditional design and manufacture, such as over-large volume and low efficiency. Therefore it is necessary to optimize the design of gear reducer. After selecting reasonable design variables to the gear reducer model, optimum mathematical model is set up aiming at the least volume. And the constraint functions are acquired based on constraint condition, such as tooth width coefficient, stress conditions of gears, bending strength of shaft, etc. Then, ic algorithm is adopted to optimize the model, after repeated cycle of arithmetic crossover and Gaussian mutation, selection based on feasible parameters of the gear reducer is obtained realizing the objective of the least optimized mechanical calculation, parameters of optimization are under certain constraints and finally realize the goal of minimum volume.
Keywords Gear Reducer ic Algorithm Optimal Design
目录
摘要 I
Abstract II
1 绪论 1
1
减速器国内外的现状和发展 1
齿轮减速器的介绍 2
齿轮减速器的分类 2
齿轮减速器的结构 2
齿轮减速器的工作原理 3
3
4
2 齿轮减速器数学模型的建立 5
齿轮减速器的数学模型 5
建立一级齿轮减速器的数学模型 5
确定约束函数 6
3 遗传算法程序设计 12
智能算法选择 12
智能算法种类 12
遗传算法介绍 12
遗传算法程序实现 13
遗传算法中的参数 13
遗传算法的伪代码 14
编码和解码 14
交叉 15
变异 16
选择 18
约束的处理 19
4 机械设计与校核 22
齿轮的设计与校核 22
优化结果 22
大齿轮的强度的校核