This paper focuses on studying and proposes deadlocks are an obstacle in the flexible manufacturing system (FMS) of Petri nets (PNs) since their occurrence will influence the partial or whole model to stop working. Due to its structural characteristic. the Petri net is an essential model tool to overcome the deadlocks problem. The place invariant (PI) associated with the control algor... https://cosmeticssquadets.shop/product-category/blood-pressure-monitoring/