نتایج جستجو برای: flexible manufacturing system fms
تعداد نتایج: 2375299 فیلتر نتایج به سال:
While designing a Flexible Manufacturing System (FMS) for production requirements, most engineers think of cost and time reduction. No one wants an over-equipped FMS, but rather one with enough capabilities to do the job. An FMS allows mixing different production set -ups in machines and provides mid-range to highrange production rates. If such complexity is not used to a high degree, the FMS m...
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...
A real time methodology with full routing flexibility is used for minimizing mean flow time in FMS. The combination of flexible alternative machines and flexible alternative operation sequences are used to obtain the full routing flexibility in flexible manufacturing system. Full routing flexibility offers decreasing cost, reducing waiting time and increasing efficiency. This paper presents an ...
This paper reports on a simple application of autonomous agents that cooperatively work in a multi-agent system trying to efficiently handle control in flexible manufacturing scenarios. The focus of the paper is on the simulation of scheduling and dispatching algorithms for automated guided vehicles (AGV) in flexible manufacturing systems (FMS). The paper presents a basic design management sy...
The step-by-step methodology of design of scheduling scenarios and strategies for different complex flexible systems will be described. This approach give the possibility to design the task oriented scheduling of system and reach two main aims: functionality and high efficiency of system. The concept is based on priority structures and queues of orders and activities. This concept is implemente...
Development and maintenance of control software has emerged as one of the most difficult problems associated with building Flexible Manufacturing Systems (FMS). FMS controllers , potentially the most flexible FMS components, are characterized by their inflexibility. To support configuration flexibility of FMS controllers, this work proposes a modular hierarchical control structure which combine...
One of the most important problems in production planning of flexible manufacturing system (FMS) is machine tool selection and operation allocation problem that directly influences the production costs and times .In this paper minimizing machining cost, set-up cost and material handling cost as a multi-objective problem in flexible manufacturing systems environment are considered. We present a ...
This paper describes a simulation-based intelligent decision support system (IDSS) for real time control of a flexible manufacturing system (FMS) with machine and tool flexibility. The manufacturing processes involved in FMS are complicated since each operation may be done by several machining centers. The system design approach is built around the theory of dynamic supervisory control based on...
In this paper we introduce the architecture of an allocation and management system capable to deal with the complexity of Flexible Manufacturing Systems (FMS). We show how to obtain the model of an FMS based on the fusion of places of Place/Transition nets. Also, we show how this model can be structurally reduced, by using Coloured Petri Nets (CPN). We also determine a general model which is in...
This paper proposes an optimal solution to large-scale Flexible Manufacturing System (FMS) scheduling problems under availability constraints based on Timed Petri Nets (TPNs). First a decomposition method of TPNs is proposed, then a mathematical model is derived based on their properties. The mathematical model is built to determine the optimal firing sequence of TPN transitions to minimize the...
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