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最优化理论与计算机辅助设计相结合是改进产品设计方法、提高产品设计质量、缩短开发周期的必由之路。三维管线布局优化是生产实际中提出的一个考虑优化的计算机辅助设计问题。它以一种产品的计算机辅助设计为背景，研究三维管线的美观和成本问题。本文研究了三线管线布局优化问题的数学模型，提出并比较了两种解决方案；然后，根据本课题中产品的实际情况选择了一个合适的方案求出优化解。
The combination of optimization theory and computer aided design is the only way to improve product design method, improve product design quality and shorten development cycle. Three-dimensional pipeline layout optimization is a practical optimization of computer-aided design proposed by the production. It is a product of computer-aided design as the background, the study of three-dimensional pipeline aesthetic and cost issues. This paper studies the mathematical model of the three-line pipeline layout optimization problem, and proposes and compares two solutions. Then, according to the actual situation of the product in this project, we select a suitable solution to find the optimal solution.