Reachability Based Trajectory Generation Combining Global Graph Search in Task Space and Local Optimization in Configuration Space
Reachability Based Trajectory Generation Combining Global Graph Search in Task Space and Local Optimization in Configuration Space
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结合任务空间中的全局图搜索和配置空间中的局部优化的基于可达性的轨迹生成
DOI:
10.1109/iros47612.2022.9981906
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Kanehiro Fumio
中科院分区:
文献类型:
--
作者:
Kumagai Iori;Murooka Masaki;Morisawa Mitsuharu;Kanehiro Fumio
In this paper, we propose a trajectory planning framework for a robot that exploits a pre-computed database of end-effector trajectories as the guidance of optimization-based inverse kinematics. We constructed a reachable graph of a robot offline, which represents feasible end-effector paths with corresponding configurations. When performing the online trajectory planning, we applied A* search to the reachable graph to find a feasible path between input start and goal globally in the task space. Its cost function has the separated term dependent on the robot, which comes from the manipulability of configurations preserved in the reachable graph, and that is dependent on the environment. Then, we solve optimization-based inverse kinematics to generate an optimal joint trajectory while utilizing the end-effector trajectory and its corresponding configurations as the guidance to avoid local optimum. We evaluated our framework quantitatively by comparing it with existing methods to confirm that it achieved a high success rate and quality of results while suppressing its computational time. We also qualitatively proved its practicality by applying it to the material handling task in the real-world. This result shows that it improved the performance of the optimization-based inverse kinematics avoiding local optimum and applicability to the different environments of the pre-computed motion database.
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影响因子:
5.2
作者:
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通讯作者:
S. Vijayakumar
DOI:
10.1177/0278364920983353
发表时间:
2021
期刊:
The International Journal of Robotics Research
影响因子:
--
作者:
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通讯作者:
Hauser, Kris
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作者:
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影响因子:
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作者:
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通讯作者:
Wieber, Pierre-Brice
DOI:
10.1109/70.508439
发表时间:
1996-08-01
期刊:
IEEE TRANSACTIONS ON ROBOTICS AND AUTOMATION
影响因子:
--
作者:
Kavraki, LE;Svestka, P;Overmars, MH
通讯作者:
Overmars, MH