Abstract
We apply specification and verification techniques based on the timed I/O automaton model of Lynch and Vaandrager to a case study in the area of automated transit. The case study models and verifies selected safety properties for automated Personal Rapid Transit (PRT) systems such as PRT 2000™, a system currently being developed at Raytheon. Due to their safety critical nature, PRT 2000™ and many other automated transit systems divide the control architecture into operation and protection subsystems. The operation system handles the normal control of vehicles. The protection system maintains safety by monitoring and possibly taking infrequent but decisive action. In this work, we present both a high-level treatment of a generic protection system and more detailed examinations of protection systems that enforce speed limits and vehicle separation.
Research supported an NSF Graduate Fellowship and the grants and contracts below.
Research supported by NSF Grant 9225124-CCR, U.S. Department of Transportation Contract DTRS95G-0001-YR.8, AFOSR-ONR Contract F49620-94-1-0199, and ARPA Contracts N00014-92-J-4033 and F19628-95-C-0118.
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Nancy Lynch and Frits Vaandrager. Forward and backward simulations — Part II: Timing-based systems. Technical Memo MIT/LCS/TM-487.C, Laboratory for Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139, April 1995. To appear in Information and Computation.
Nancy Lynch. Modelling and verification of automated transit systems, using timed automata, invariants and simulations. This volume.
Nancy Lynch, Roberto Segala, Frits Vaandrager, and H.B. Weinberg. Hybrid I/O automata. This volume.
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© 1996 Springer-Verlag Berlin Heidelberg
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Weinberg, H.B., Lynch, N., Delisle, N. (1996). Verification of automated vehicle protection systems. In: Alur, R., Henzinger, T.A., Sontag, E.D. (eds) Hybrid Systems III. HS 1995. Lecture Notes in Computer Science, vol 1066. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0020938
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DOI: https://doi.org/10.1007/BFb0020938
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