Add to ORKGIn this paper, we are interested in production systems, realizing an assembly operation between components, and controlled by a Generalized Kanban policy. We define precisely how the Generalized Kanban mechanism can be applied in the case of assembly systems. Two different control mechanisms, already introduced for Kanban systems, can be used for controlling the flow of parts. In one case, kanbans attached to components are released simultaneously when the assembly occurs, whereas in the other case, they are released independently. We then model these Generalized Kanban controlled assembly systems as queueing networks with synchronization mechanisms and propose some properties for these models. Keywords