Hybrid Differential Dynamic Programming for Planar Manipulation Primitives
Author(s)
Doshi, Neel; Hogan, Francois R.; Rodriguez Garcia, Alberto
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We present a hybrid differential dynamic programming (DDP) algorithm for closed-loop execution of manipulation primitives with frictional contact switches. Planning and control of these primitives is challenging as they are hybrid, under-actuated, and stochastic. We address this by developing hybrid DDP both to plan finite horizon trajectories with a few contact switches and to create linear stabilizing controllers. We evaluate the performance and computational cost of our framework in ablations studies for two primitives: planar pushing and planar pivoting. We find that generating pose-to-pose closed-loop trajectories from most configurations requires only a couple (one to two) hybrid switches and can be done in reasonable time (one to five seconds). We further demonstrate that our controller stabilizes these hybrid trajectories on a real pushing system. A video describing our work can be found at https://youtu.be/YGSe4cUfq6Q.
Date issued
2020Department
Massachusetts Institute of Technology. Department of Mechanical EngineeringJournal
2020 IEEE International Conference on Robotics and Automation (ICRA)
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Doshi, Neel, Hogan, Francois R and Rodriguez, Alberto. 2020. "Hybrid Differential Dynamic Programming for Planar Manipulation Primitives." 2020 IEEE International Conference on Robotics and Automation (ICRA).
Version: Original manuscript