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An automated manufacturing system (AMS) contains a number of versatile machines (or workstations), buffers, and an automated material handling system (MHS). The MHS can be an automated guide vehicle system, and/or a system that consists of multiple robots. The issue of deadlock resolution in AMS is very important in the operation of AMS and extensively studied. Usually, robots are seen as source of...
The growing concerns for material resources, energy conservation and landfill capacity have put much pressure on manufacturers, charging them with the responsibility for their outdated products. However, obstacles arise when introducing product/material recovery in the economic landscape due to much uncertainty inherent in the process (e.g., prevailing condition of reclaimed products and the level...
An urban network of signalized intersections can be suitably modeled as discrete event system, in which the traffic light alternations are described by means of timed coloured Petri nets (TCPN). In this paper, a model of such a network via TCPN is used to state and solve the problem of coordinating several traffic lights with six and two phases. Moreover, the analysis of the control TCPN models is...
In this paper, we propose a novel Petri net model for solving test generation and site of fault and fired logical value for combinational circuits. In order to improve the logic fault efficiency, the transitions of general Petri nets (PNs) are modified according to the critical of truth table, called logic Petri net LPN. The LPN model can transfer complexity circuit problem to a local adjacent place...
As the number of agents increases rapidly on the Internet, discovering appropriate service agents with required capabilities for request agents becomes a crucial issue in multi-agent systems. Two major discovering approaches have been developed: centralized matchmaking approaches and distributed bidding approaches. However, the former approaches may suffer the problem of middle agent overload and...
A generic agile system means both its system configuration and execution jobs are not fixed when the system control was in design. They are allowed to vary according to its modeling rules when the system is in operation. This paper introduces a parametric event-driven flowed token Petri nets (PEFT-PN) for modeling and control of such a generic agile system. The solution should rely on the integration...
Researchers always intend to pursue the convenient and integrated tools for restoring the complexity of industrial automated systems. In this paper, a PC-based with PC visual basic-based (VB-Based) human-machine interface (HMI) is developed by using Petri nets (PN) technique for the simulation of an industrial automated system. The result brings many advantages to the reality of the automated control...
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