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A general framework for the manual teleoperation of kinematically redundant space-based manipulators.

机译:运动学冗余空基机械手的手动远程操作的通用框架。

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This thesis provides a general framework for the manual teleoperation of kinematically redundant space-based manipulators. It is proposed to break down the task of controlling the motion of a redundant manipulator into a sequence of manageable sub-tasks of lower dimension by imposing constraints on the motion of intermediate bodies of the manipulator. This implies that the manipulator then becomes a non-redundant kinematic chain and the operator only controls a reduced number of degrees of freedom at any time. However, by appropriately changing the imposed constraints, the operator can use the full capability of the manipulator throughout the task.; Also, by not restricting the point of teleoperation to the end effector but effectively allowing direct control of intermediate bodies of the robot, it is possible to teleoperate a redundant robot of arbitrary kinematic architecture over its entire configuration space in a predictable and natural fashion.; It is rigourously proven that this approach will always work for any kinematically redundant serial manipulator regardless of its topology, geometry and of the number of its excess degrees-of-freedom. Furthermore, a methodology is provided for the selection of task and constraint coordinates to ensure the absence of algorithmic rank-deficiencies.; Two novel algorithms are provided for the symbolic determination of the rank-deficiency locus of rectangular Jacobian matrices: the Singular Vector Algorithm and the Recursive Sub-Determinant Algorithm. These algorithms are complementary to each other: the former being more computationally efficient and the latter more robust.; The application of the methodology to sample cases of varying complexity has demonstrated its power and limitations: It has been shown to be powerful enough to generate complete sets of task/constraint coordinate pairs for realistic examples such as the Space Station Remote Manipulator System and a simplified version of the Special Purpose Dexterous Manipulator.
机译:本文为运动冗余空基机械手的手动遥操作提供了一个通用框架。提出了通过对操纵器的中间主体的运动施加约束来将控制冗余操纵器的运动的任务分解成一系列较小尺寸的可管理子任务的任务。这意味着操纵器于是变成非冗余运动学链,并且操作员在任何时候仅控制减少的自由度数。但是,通过适当地改变施加的约束,操作员可以在整个任务中使用操纵器的全部功能。而且,通过不将遥控操作的点限制在末端执行器上,而是有效地允许直接控制机器人的中间主体,可以以可预测的自然方式在任意整个运动空间上对任意运动结构的冗余机器人进行遥控操作。严格证明,这种方法将始终适用于任何运动学上冗余的串行机械手,而不管其拓扑结构,几何形状以及其超自由度的数量如何。此外,提供了一种用于选择任务和约束坐标的方法,以确保不存在算法等级缺陷。提供了两种新颖的算法用于符号确定矩形Jacobian矩阵的秩亏轨迹:奇异矢量算法和递归子行列式算法。这些算法是互补的:前者在计算上更有效,而后者则更健壮。该方法论对复杂程度不同的案例的应用证明了其强大的功能和局限性:已证明它具有强大的功能,可以为诸如太空站远程操纵器系统之类的实际示例生成简化的任务/约束坐标对对。专用敏捷机器人的版本。

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