Boundedness properties of timed continuous Petri nets with interval firing rates

This paper presents the concepts of d-upper boundedness and weakly δ-conservativeness for general Timed Continuous Petri nets. The analysis is extended to the case when the exact values of the firing rates of the transitions are uncertain, but the intervals of their values are known (the firing rates are constant, between prescribed minimal and maximal values). The example of a manufacturing system is included in order to illustrate these concepts.