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TrajectoTree: Trajectory Optimization Meets Tree Search for Planning Multi-contact Dexterous Manipulation (2109.14088v1)

Published 28 Sep 2021 in cs.RO

Abstract: Dexterous manipulation tasks often require contact switching, where fingers make and break contact with the object. We propose a method that plans trajectories for dexterous manipulation tasks involving contact switching using contact-implicit trajectory optimization (CITO) augmented with a high-level discrete contact sequence planner. We first use the high-level planner to find a sequence of finger contact switches given a desired object trajectory. With this contact sequence plan, we impose additional constraints in the CITO problem. We show that our method finds trajectories approximately 7 times faster than a general CITO baseline for a four-finger planar manipulation scenario. Furthermore, when executing the planned trajectories in a full dynamics simulator, we are able to more closely track the object pose trajectories planned by our method than those planned by the baselines.

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Authors (5)
  1. Claire Chen (14 papers)
  2. Preston Culbertson (17 papers)
  3. Marion Lepert (8 papers)
  4. Mac Schwager (88 papers)
  5. Jeannette Bohg (109 papers)
Citations (29)

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