Pallets B Raw Material

We concentrate on a family of discrete event systems obtained from a simple modular design principle that include in a controlled way primitives to deal with concurrency, decisions, synchronization, blocking , and bulk movements of jobs. Due to the functional complexity of such systems, reliable throughput approximation algorithms must be deeply supported on a structure based decomposition technique. We present a decomposition technique and a xed-point search iterative process based on response time preservation of subsystems. An extensive battery of numerical experiments has shown that the error is less than 3%, and that the state space is usually reduced by more than one order of magnitude.