On Robustness of Event-Order of Deds
离散事件动态系统事件时序的鲁棒性

In this paper,we point out the relations between event order and several important properties of Discrete Event Dynamic Systems.We obtain a series of results on robustness of event order for the maximum algebra DEDS model.A Kharitonov like finite check criterion for robustness of event order is given for the case in which the event occurrences are affine linear function of perturbed parameters.Vertex check is shown not sufficient to determine the robustness of event order under more general circumstances by a counter example.A sufficient condition for DEDS to preserve event order under parameter perturbations is then given for the polynomial case.