【作者】 许晓枫；

【导师】 张树有；

【作者基本信息】 浙江大学 ， 机械设计及理论， 2006， 硕士

【摘要】 本文从研究连杆机构型式和尺度所隐含的工程语义信息入手，提出了连杆机构的工程语义分析方法及机构轨迹曲线链码化分析方法。基于轨迹曲线链码匹配技术实现了机构的反求设计。提出了构件与零件关联映射的零件建模方法，给出了零件和构件的型式映射和运动副相对位置尺寸的映射规则。获取连杆机构的拓扑结构信息及运动副的位置信息，实现了零件和构件间的位置关联映射。建立了连杆机构的三维映射模型。开发了原型系统，将研究成果应用于实际设计过程取得了良好的效果。 本文的主要工作为： 第一章详细阐述了连杆机构设计建模的主要研究内容。综述了连杆机构设计建模的研究进展，并分析了现在有研究成果所存在的不足。系统的阐述了本文的研究思路并分析了本文研究工作的意义。最后给出本文的章节结构安排。 第二章研究了连杆机构型式和尺度所隐含的工程语义信息，提出了连杆机构的工程语义分析方法。给出了连杆机构轨迹曲线生成算法，建立了连杆机构电子图谱。提出了机构轨迹曲线链码化分析方法，给出了轨迹曲线链码的定义和自动提取算法。为实现机构反求设计奠定了基础。 第三章在轨迹曲线链码化分析方法的基础上，给出了轨迹曲线链码几何变换算法，构造了链码匹配相似度函数并进行了优化。在上一章所构建的连杆机构电子图谱的基础上，实现了基于链码匹配算法的机构反求设计。 第四章提出了构件与零件关联映射的零件建模方法，实现了零件和构件间的型式映射和运动副相对位置尺寸映射。获取连杆机构的拓扑结构信息及运动副的位置信息，实现了零件和构件间的位置关联映射。建立了连杆机构的三维映射模型。 第五章应用连杆机构设计建模技术研究成果开发了计算机辅助连杆机构设计建模原型系统AutoMech。介绍了AutoMech系统的体系结构及其主要功能，结合工程实际分别给出了系统各模块的应用实例。将连杆机构设计建模技术应用于机械产品的设计开发过程，取得了良好的效果。 第六章对连杆机构设计建模方法进行总结，归纳本文的主要研究工作。对后续的研究工作提出建议并展望未来的发展方向。更多还原

【Abstract】 This thesis starts with the study on the engineering semantemes which are revealed from the pattern and dimension of a linkage mechanism. And then a linkage mechanism analyses approach based on such semantemes is presented, as well as a trajectory analyses approach based on curve encoding method. Hereby it realizes a mechanism count-design technique on the ground of a trajectory code-chains matching method. It also presents a mechanical component modeling approach via a mapping method between the corresponding mechanism elements and components. Mapping regulations are given which are capable to correctly map between the corresponding components and mechanism elements in terms of their patterns and dimensions of relative joint positions. To extract the information representing linkage mechanism topological structure and the position coordinates of every joint, it then successfully maps between components and mechanism elements respectively in terms of their positions. Hence, the three-dimensional model of a linkage mechanism is established. Prototype system has been developed which applies such research findings to the real design processes.The main works of this thesis are as follows:Chapter one firstly discuses the major research contents of linkage mechanism design and modeling in details. And then a survey on relevant research along with analyses of the shortages so far. Finally it systematically presents the clews of this thesis and analyzes the meanings of its studies. It also gives the organization structure of this thesis at last.Chapter two studies on the engineering semantemes which are revealed from the pattern and dimension of a linkage mechanism, and presents a linkage mechanism analyses approach based on such semantemes. It also presents a trajectory generation method through which it establishes an electro-atlas of linkage mechanisms. It still presents a trajectory analyses approach via curve encoding skills and puts forward a method to exact the code-chain of a trajectory automatically. Hereby everything is getting done for the mechanism counter-design.Chapter three based on the trajectory encoding analyses approach, it presents the trajectory geometrical transition algorithms and then develops a code-chains matching function which is also optimized afterwards. On the ground of the electro-atlas established in the previous chapter it successfully realizes a mechanism counter-design technique lastly.Chapter four presents a mechanical component modeling approach via a更多还原