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改进蚁群算法研究及其在车辆调度中的应用

Study on Improved Ant Colony Algorithm and Its Application in the Vehicle Scheduling

【作者】 兰世海

【导师】 李蓓智;

【作者基本信息】 东华大学 , 机械制造及其自动化, 2007, 硕士

【摘要】 随着市场经济的发展,作为“第三利润源泉”的物流对经济活动的影响日益明显,越来越引起了人们的高度重视,已成为当前“最重要的竞争领域”之一。未来的市场竞争,物流将起到举足轻重的作用。物流配送中的车辆调度优化方法和系统,是实现快速、准确和低成本物流配送的重要手段和途径,是现代物流系统必不可少的重要部分。然而,现有的物流系统大多采用人工或计算机辅助的方法进行车辆调度,因此,不仅调度时间长,而且,不可能综合多目标多约束调度需求进行科学的量化分析和优化处理。因此,研究物流配送中的车辆调度需求,建立多目标多约束环境下的车辆调度数学模型,提出有效的、对一般车辆调度问题具有一定适用性的智能优化方法,并研制车辆调度系统具有重要的理论意义和实用价值。本文的主要工作和贡献在于:1、在对智能路径优化算法进行分析对比的基础上,深入研究了基本蚁群算法的基本原理、模型、实现方法及其仿真效果,分析了基本蚁群算法的优点及其不足。2、针对基本蚁群算法存在的计算时间长、易于陷入局部最优等缺点,提出和实现了基于模式学习的动态小窗口蚁群算法(DLWACAPL)和融入遗传算法的DLWACAPL(HACAGA),并通过案例测试,证明了上述两种改进蚁群算法的有效性和适应性。3、研究了面向能力约束的车辆路径问题(CVRP)和面向时间窗的车辆路径问题(VRPTW)数学模型、求解方法以及车辆调度的多目标优化策略,包括多目标体系、数学模型和多目标的综合优化方法。4、基于本文提出的改进蚁群算法(DLWACAPL和HACAGA)进行了车辆调度系统的研制,包括车辆调度系统的主要功能设计、软硬件环境配置和关键算法的编码与实现。5、对多目标多约束车辆调度工程问题进行了测试,验证了本文提出的改进蚁群算法的有效性和适应性。

【Abstract】 ABSTRACTWith the development of market economy, it has been paid more attention that logistics, taken as the third profit resource, has obviously affected the economy activity. As the most important competitive field, it will play an important role in the future market competition. The vehicle scheduling optimization and system of logistics delivery is one of important approaches that implement fast, accurate and low-cost logistics delivery. And they are indispensable parts of modern logistics system.In current logistics system, manual or computer-aided approaches are mostly adopted. On one hand, it will cost much time, on the other hand it is hardly to synthesize multi-objective and multi-constraint scheduling demands to perform scientific quantitative analysis and optimization disposal. So it is desired for theory and practice to present effective and adaptable intelligent optimization for general vehicle scheduling problems, research on vehicle scheduling requirement in logistics delivery, establish the mathematical model of vehicle scheduling in complicated environment with multi-objective and multi-constraint. The main contributions of this thesis include:1.The theory, model, tool and simulation of basic ant colony algorithm are discussed in details by analyzing and comparing intelligent routing optimizations.2.Two novel intelligent optimizations, named Dynamic Little Window Ant Colony Algorithm based on Pattern Learning (DLWACAPL) and DLWACAPL integrated Genetic Algorithm (HACAGA), are proposed to avoid the deficiency of basic Ant Colony Algorithm which often costs long time and get into the local optimization easily. And the validations and adaptation of the two intelligent optimizations have been performed with benchmark.3.The mathematical models and approaches of two typical vehicle scheduling problems on Capacitated Vehicle Routing Problems (CVRP) and Vehicle Routing Problems with Time Windows (VRPTW) are investigated. Furthermore, the multi-objective optimization strategies on vehicle scheduling including multi-objective framework, mathematics model and multi-objective comprehensive optimization are researched.4.Vehicle scheduling system based on the improved ant colony algorithms (DLWACAPL and HACAGA) has been developed, including the design of main function models, the configuration of software and hardware as well as coding and realization of the key algorithms.5.A study of how these meta-heuristics perform is carried out on the engineering benchmark. And the experimental results have indicated the validation and adaptation of the improved ant colony algorithm proposed in this thesis.Lan Shihai (Mechanical and Electrical Engineering)Supervised by

  • 【网络出版投稿人】 东华大学
  • 【网络出版年期】2007年 05期
  • 【分类号】U116.2;F250
  • 【被引频次】7
  • 【下载频次】656
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