Modeling of multi-project scheduling for complex product development based on CPN

The modeling of multi-project scheduling is one indispensable parts of multi-project management of complex product development. The characteristics of the scheduling were analyzed. The modeling methods available did not satisfy the request of multi-project modeling. The CPN (Coloured Petri Nets)-based model was proposed. That is, on the basis of definition of CPN colors, modeling comparability, hierarchy, conflict of multi-project scheduling by the hierarchy and colors of CPN and describing the relevancy of technology, openness and iterativeness of multi-project scheduling by the guard function, arc function and bidirectional arc of CPN. The typical example and analysis method were introduced, and the result and the next work were given.