Quality and production logistics have been traditionally considered as separate fields, both by researchers and industrialists. However, during the design phase of production systems, the decisions taken as an answer to productivity requirements have an impact on product quality; similarly the decisions taken to meet quality requirements affect the productivity performance of the system. The pa...

We consider an inventory-production system where items deteriorate at a constant rate. The objective is to develop an optimal production policy that minimizes the cost associated with inventory and production rate. The inventory problem is first modeled as a linear optimal control problem. Then linear quadratic regulator (LQR) technique is applied to the control problem in order to determine th...

Two production systems with inventory-level-dependent demand are considered and Pontryagin maximum principle is used to determine the optimal control.

Tailorability is generally regarded as a key requirement for groupware applications. In this paper, we will focus on a specific class of tailoring activities: the definition of different system behaviour for specific scopes of validity. Since the state of the art in the CSCW literature does not yet offer any satisfactory solutions to support users in performing this class of tailoring activitie...

Reengineering production systems in an attempt to meet tight cost, quality and leadtime standards has received considerable attention in the last decade. In this paper, we discuss the reengineering process at the Royal Netherlands Naval Dockyard. The process starts with a characterisation and a careful analysis of the production system and the set of objectives to be pursued. Next, a new produc...

Manufacturers make production decisions and carry inventory to satisfy uncertain demand. When holding and shortage costs are high, carrying inventory could be even more expensive for a capacitated production system. Recent developments in information technology and sales strategies enabled firms to acquire, collect, or induce advance demand information. We address a periodic-review, stochastic,...

In this article a new Control-Supervisory architecture of Flexible Manufacturing Systems (FMS) is presented. We are interested particularly in construction and modelling of FMS robust control of flow-shop type to time constraints. Other than the control of production system, the goal is to observe and interpreted the robustness of resources and of manufacturing system. The P-time Petri Nets whi...

Production systems are declarative, in that they do not explicitly specify the control flow. Yet, the concept of a production system does not include the definition of a given control strategy. The control between rules in a production rule program is, in practice, defined by each implementation of a production rule engine. Engines have traditionally been implemented using the Rete algorithm. S...