2012-01-28 Verification day

Thao Dang

Reachability analysis for polynomial dynamical systems using the Bernstein expansion

This paper is concerned with the reachability computation problem for polynomial discrete-time dynamical systems. Such computations constitute a crucial component in algorithmic verification tools for hybrid systems and embedded software with polynomial dynamics, which have found applications in many engineering domains. We describe two methods for over-approximating the reachable sets of such systems; these methods are based on a combination of the Bernstein expansion of polynomial functions and a representation of reachable sets by template polyhedra. Using a prototype implementation, the performance of the methods was demonstrated on a number of examples of control systems and biological systems.