Feedback control designs for manufacturing systems modelled by continuous Petri nets

This work is concerned with the control design of a certain class of manufa cturing systems modelled by continuous time Petri nets. The considered syst ems ave large series assembly workshops for which the final machine is a mo l to-input mono-output one. The average production frequencies of the machi nes are controlled according to the buffers content. Three different feedba ck control designs are investigated a bang-bang one, a proportional one, an d a combined one. The convergence of the output buffer to a desired level i s proved and the analytic expression of the marking is derailed in the case of a single machine station. The results are then applied for the control design of open manufacturing lines.