节点文献
多类型复杂管线系统规划布置与图形处理的关键技术研究
Research on the Key Technologies of Planning & Laying and Graphic Processing for the Multi-types & Complex Pipeline Systems
【作者】 曹斌;
【导师】 谭建荣;
【作者基本信息】 浙江大学 , 机械设计与理论, 2002, 博士
【摘要】 多类型复杂管线系统规划布置及管理是一项复杂程度很高的系统工程,不仅涉及到空间的合理规划问题,而且对CAD、信息处理以及协同技术有着很高的要求。本文从提高多类型复杂管线系统规划布置及管理质量、改善设计环境的目的出发,在理论、方法与技术上较为系统地对多类型复杂管线系统规划布置及管理技术中存在的一些关键问题进行了研究。探讨了复杂管线系统布置方案场的数学描述方法,提出了基于图形实体对象封装的多类型复杂管线系统规划信息的动态建模策略,解决了二维环境下多类型复杂管线系统空间布置信息描述与表达的抽象问题,给出了多类型复杂管线系统布置过程中布置实体的几何描述方法,研究了基于无碰路径求解的管线系统自动布置技术,设计了多类型复杂管线系统协同规划的工作模式及规划信息管理体系。本文的研究成果已成功地应用于有关科研项目,并取得了良好的效果。 第一章,首先,结合管线系统规划布置及管理技术特点,系统地介绍了当前管线系统布置、管理及其相关技术的研究现状;其次分析了多类型复杂管线系统规划布置与管理技术中存在的一些问题和不足;最后阐述了本论文的研究内容、技术路线以及研究意义。 第二章,通过定义约束元、约束集、约束关系、约束方法、约束链、约束度、关联约束子集等概念,对影响复杂管线系统规划布置的基本约束因素进行了较为全面、系统的分析;探讨了基于目标分解的复杂管线系统优化布置问题的数学描述方法,建立了面向复杂管线系统布置的广义布置方案场模型,并在此基础上设计了求解该模型的变异遗传算法。 第三章,针对低维环境下多类型复杂管线系统规划布置及管理技术中存在的信息描述能力的不足,从信息建模的角度对其进行了分析。通过引用对象概念对各种设计符号进行定义,提出了基于图形实体对象封装的动态信息建模方法,并根据多类型复杂管线系统规划布置中使用的不同功能符号的特点,分别建立了不同类型符号的封装信息模型,同时设计了面向多类型复杂管线系统规划信息管理的对象-关系模型映射机制。 第四章,针对低维环境下多类型复杂管线系统规划布置及管理技术中存在的空间信息表达抽象的问题,提出了一种基于截切面映射图的多类型复杂管线系统空间分布信息的表达方法。该方法通过管线系统设计图中的图形实体的分层处理与信息封装,首先实现了复杂管线实体的自动识别并确保了图形实体具有对应管线实体对象的完备空间信息;在此基础上,根据用户给出的任意位置截切线,构造隐式描述的截切面并与隐式描述的管线实体进行求交运算;最后通过对求交结果的坐标变换,生成能够直观反映出多类型复杂管线系统空间分布信息的截切面映射图。 第五章,通过图形实体对象的信息封装建模,首先设计了二维环境下多类型复杂管线系统布置空间与主要布置实体的几何描述方法;在此基础上,通过引用姿态空间概念对管线系统的空间规划问题进行了研究,给出了管线系统自动布置的无碰路径求解算法;最后摘 要针对多类型复杂管线系统二维布置过程中易于出现干涉现象的环节进行了分析与论述,设计了管线实体间的连接关系检查、管线实体间的空间干涉检查以及管线实体与环境物的碰撞干涉检查等算法,以此解决多类型复杂管线系统规划结果是否合理与可靠的评估问题。 第六章,为了提高多类型复杂管线系统规划布置及管理的质量与效率,在分析多类型复杂管线系统规划的工作流程和信息流程的基础上,讨论了建立多类型复杂管线系统协同规划工作模式的一般策略,并由此给出了一种基于黑板的复杂管线系统多Agent协同规划机制,设计了基于分布式环境的多类型复杂管线系统规划信息管理的基本体系结构。 城市地下管线系统网络是大规模、多类型、高复杂度管线系统应用的典范。第七章首先对城市地下管线系统的基本知识及研究现状进行了简要介绍:其次针对目前地下管线系统规划布置及管理技术中存在的规划信息铀象等问题,同时结合本文的研究成果,设计并开发了一个集地下管线规划布置、数据处理与成图功能于一体的原型系统:最后通过对一些实例的分析,简要阐述了该系统的主要模块功能。 第八章,对本论文的主要研究成果进行总结,并对该研究领域的发展前景提出作者的几点看法。
【Abstract】 The multi-types & complex pipeline system planning & planning and management is a complex system engineering, that not only refers to the rational spatial planning, but also has a high requirement to the technology of CAD, information processing and cooperation work. For upgrading the qualities of multi-types & complex pipeline system design and management, and improving its design environment, research on some key theoretical, methodological and technological problems that affect multi-types & complex pipeline system planning and management is systematically developed in this dissertation. Firstly, the mathematical modelling method of optimization design for complex pipeline system packing is discussed. Secondly, a dynamical modelling strategy for information of multi-types & complex pipeline system’ design and management is presented on the base of graphic objects’ encapsulation. Then the abstraction problems of multi-types & complex pipeline system’ spatial information description and expression in 2D design environment are solved. Following that, an automatically laying technology for pipeline system is researched. In the end, the reliability work modes supporting multi-types & complex pipeline system’s cooperative design are studied and the correspondent management system of planning information is established. These methods and technologies have been used in a multi-types & complex pipeline system’ design & management, and the expected results have been obtained.In chapter 1, the fundamental characteristics of pipeline system laying and information management are firstly analyzed, and the current research state in pipeline CAD and management technology is reviewed in the meanwhile. Then some emphasis problems and disadvantages existed in multi-types & complex pipeline system design and management are summarized. Finally the research contents, significance and technological routes of this dissertation are expanded, with which followed a brief introduction to the dissertation’s architecture.In chapter 2, by defining some concepts, such as constraint unit, constraint aggregate, constraint relation, constraint method, constraint chain, constraint degree and associate constraint sub_aggregate etc. the basic constraint factors that affect the complex pipeline system packing are fully analyzed in the first. In the following, a mathematical modelling method used for complex pipeline system’ optimization packing design is brought forth based on the optimization target decomposing, then a mode of generalized proposal field of the complex pipeline system packing design is constructed. Finally, a variant genetic algorithm for the solution of the mode mentioned above is derived.Design information modelling is an important problem in engineering design. Aimed at the shortage of information description of multi-types & complex pipeline system design and management in 2D environment, a dynamic modelling method for design and management information based on the object encapsulation is firstly presented in this chapter by defining all sort of design symbols in object. Following, the encapsulation models of different kinds of design symbols are designed distinguishingly in terms of their functional characteristics. In the end, facing the multi-types & complex pipeline system management, a mapping mechanism of object-relation mode is established.Aimed at the spatial information expressing disadvantages existed in 2D pipelines design and management, a new approach is proposed in chapter 4. By using it, the section mapping drawings of multi-types & complex pipeline system can be automatically generated through the entity crossing operation. This method composes of the following three key steps. In the first, different graphic entities are identified from the complex pipelines drawing in terms of the layer information they owned, then the correspondent information is to be encapsulated to keep the spatial data completeness of the graphic symbols. In the second, a provided virtual section is taken as the tool to ex