四连杆自动对接机构设计与实现——基于Solidworks仿真

需积分: 11 2 下载量 132 浏览量 更新于2024-08-06 收藏 830KB PDF 举报
"一种考虑连杆质量的四连杆对接机构设计与实现,该机构用于模拟空间对接技术,通过Solidworks进行建模、虚拟装配和运动仿真以验证其可行性。" 文章介绍了在考虑连杆质量的条件下,如何设计并实现一个能够解决平衡问题的对接体系结构。在传统的机构学中,当不考虑连杆质量时,机构可以在某个支撑点保持静态平衡。然而,在实际应用,特别是航天领域中,连杆的质量不能忽略,这会导致机构失去平衡。为了解决这一问题,文章提出了一个四连杆对接机构,并通过添加配重的方法来保持系统的稳定。 具体来说,文章以两个质量比为2:1的物体为例,构建了一个四连杆对接机构。这种机构基于平行四边形原理,其特点是运动过程中,两个特定的对应点与支撑点始终保持共线,且两点间的距离保持恒定。这一特性使得机构在模拟空间物体对接时更为直观和准确。 在设计过程中,研究人员利用计算机辅助设计软件Solidworks进行零件建模,这有助于精确地构建每个部件的三维模型。接着,通过虚拟装配功能,将各个部件组合成完整的机构,确保它们在实际操作中的正确配合。最后,进行了运动仿真,通过模拟机构的运动轨迹和动力学行为,验证了该设计的可行性和稳定性。 此外,文章还强调了这一设计对教育的意义,因为它简化了复杂的空间对接技术,使其更易于理解和激发学习者的兴趣。对于初学者而言,这种四连杆机构提供了一个直观的平台,便于他们学习和研究机器人学和控制理论等相关领域。 关键词包括:平行四边形机构、自动对接机构和Solidworks运动仿真,表明了研究的核心内容和技术工具。文章的作者来自北京邮电大学自动化学院,他们的研究工作在深入探索对接机制的同时,也为教育实践提供了新的思路。
2019-08-29 上传
Systems Modeling Language (OMG SysML™) 1.6.pdf The purpose of this International Standard is to specify the Systems Modeling Language (SysML), a general-purpose modeling language for systems engineering. Its intent is to specify the language so that systems engineering modelers may learn to apply and use SysML; modeling tool vendors may implement and support SysML; and both can provide feedback to improve future versions. Note that a definition of “system” and “systems engineering” can be found inISO/ IEC 15288. SysML reuses a subset of UML 2.5 and provides additional extensions to address the requirements in UML for SE. SysML uses the UML 2.5 extension mechanisms as further elaborated in Clause 17 as the primary mechanism to specify the extensions to UML 2.5. This revision of SysML relies on several new features incorporated into UML 2.5. Any use of the term “UML 2” or “UML” in this specification, unless otherwise noted, will refer to UML 2.5 in general and the UML 2.5 specification in particular. Since SysML uses UML 2.5 as its foundation, systems engineers modeling with SysML and software engineers modeling with UML 2.5 will be able to collaborate on models of software-intensive systems. This will improve communication among the various stakeholders who participate in the systems development process and promote interoperability among modeling tools. It is anticipated that SysML will be customized to model domain-specific applications, such as automotive, aerospace, communication, and information systems. SysML is designed to provide simple but powerful constructs for modeling a wide range of systems engineering problems. It is particularly effective in specifying requirements, structure, behavior, allocations, and constraints on system properties to support engineering analysis. The language is intended to support multiple processes and methods such as structured, object-oriented, and others, but each methodology may impose additional constraints