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Path planning for a redundant robot manipulator using sparse demonstration data

机译:使用稀疏演示数据的冗余机器人操纵器的路径规划

摘要

The ability to plan and execute of movements to accomplish tasks is a fundamental requirement for all types of robot, whether in industrial or in research applications. This Master Thesis addresses path planning for redundant robot platforms. The research targets two major goals. The first is to bypass the need for an explicit representation of a robot's environment, which is strained with sophisticated computations as well as required expert knowledge. This bypass allows for a considerably more flexible use of a robot, being able to adapt its path planning data to an arbitrary new environment within minutes. The second goal is to provide a real-time capable path planning method, that utilizes the advantages of redundant robot platforms and handles the increased complexity of such systems. These goals are achieved by introducing kinesthetic teaching into path planning, which has already proven to be a successful improvement for single task methods dealing with redundancy resolution.The thesis proposes an approach utilizing a topological neural network algorithm to construct an internal representation of a robot's workspace based on inputdata obtained from physical guidance of the robot by a user. In order to create feasible and safe movements, information from both configuration space of the robot and task space are employed. The algorithm is extended byheuristics to improve its results for the intended scenario. This modified network construction algorithm constructs a navigation graph similar to classical approaches with explicit modeling. It can be processed by means of conventional search algorithms from graph theory to generate paths between two arbitrary points in the workspace.
机译:计划和执行完成任务的动作的能力是所有类型的机器人的基本要求,无论是在工业应用中还是在研究应用中。本硕士论文致力于冗余机器人平台的路径规划。该研究的目标是两个主要目标。第一个是绕过对机器人环境的显式表示的需求,而复杂的计算和所需的专业知识使该环境变得捉襟见肘。通过这种旁路,可以更加灵活地使用机器人,从而能够在数分钟内将其路径规划数据适应任意新环境。第二个目标是提供一种实时的路径规划方法,该方法利用了冗余机器人平台的优势并处理了此类系统日益增加的复杂性。通过将运动学教学引入路径规划中来实现这些目标,这已被证明是处理冗余解决方案的单任务方法的成功改进。本文提出了一种利用拓扑神经网络算法构造机器人工作空间的内部表示的方法。基于用户从机器人的物理指导获得的输入数据。为了创建可行且安全的运动,采用了来自机器人的配置空间和任务空间的信息。通过启发式算法对该算法进行了扩展,以改善预期方案的结果。这种改进的网络构造算法使用显式建模来构造类似于经典方法的导航图。可以通过图论的常规搜索算法对其进行处理,以在工作空间中的两个任意点之间生成路径。

著录项

  • 作者

    Seidel Daniel;

  • 作者单位
  • 年度 2014
  • 总页数
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类

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