Abstract
This paper describes Hy-CIRCA, an architecture for verified, correct-by-construction planning and execution for hybrid systems, including nonlinear continuous dynamics. Hy-CIRCA addresses the high computational complexity of such systems by first planning at an abstract level, and then progressively refining the original plan. Hy-CIRCA integrates the dReal nonlinear SMT solver with enhanced versions of the SHOP2 HTN planner and the CIRCA Controller Synthesis Module (CSM). SHOP2 computes a high level nominal mission plan, the CIRCA CSM develops reactive controllers for the mission steps, accounting for disturbances, and dReal verifies that the plans are correct with respect to continuous dynamics. In this way, Hy-CIRCA decomposes reasoning about the plan and judiciously applies the different solvers to the problems they are best at.
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Notes
- 1.
Playbook® is a registered trademark of SIFT, LLC.
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Acknowledgments
Thanks to the anonymous reviewers, Laura Humphrey, Sicun Gao, and Soonho Kong for comments and advice. This material is based upon work supported by the U.S. Air Force (AFRL) under Contract No. FA9550-15-C-0030. Any opinions, findings and conclusions, or recommendations expressed in this material are those of the authors and do not reflect the views of the U.S. Air Force (AFRL).
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Goldman, R.P., Bryce, D., Pelican, M.J.S., Musliner, D.J., Bae, K. (2016). A Hybrid Architecture for Correct-by-Construction Hybrid Planning and Control. In: Rayadurgam, S., Tkachuk, O. (eds) NASA Formal Methods. NFM 2016. Lecture Notes in Computer Science(), vol 9690. Springer, Cham. https://doi.org/10.1007/978-3-319-40648-0_29
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DOI: https://doi.org/10.1007/978-3-319-40648-0_29
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