Statecharts model and heuristic scheduling of a production process

Modern factories often employ elaborate manufacturing information systems involving a computer network and various databases. In practice, it often happens that soon after a plan or schedule has been generated, an unexpected event happens that forces the decision-maker to make changes. We present a Statecharts model of a small manufacturing plant. Based on analysis of manufacturing processes in a project partner firm, we model it as discrete event system. Further we propose a heuristic rescheduling algorithm for it.