AGVSim2-a development tool for AGVS controller design

Gaskins, Robert J.; Tanchoco, J. M. A.

doi:10.1080/00207548908942598

Cited by 23 publications

(4 citation statements)

References 6 publications

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“…Gaskins and Tanchoco (1989) introduced the vehicle simulator AGVSim2, which was intended to be a development tool for testing the performance of an AGV supervisory controller. Rather than modelling the control logic, AGVSim2 was designed to be linked directly to the supervisory controller software.…”

Section: Computer Simulation Modelsmentioning

confidence: 99%

Evaluation of AGV routeing strategies using hierarchical simulation

Seifert¹,

Kay²,

Wilson³

1998

International Journal of Production Research

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To analyse an automated guided vehicle (AGV) system operating under selected vehicle routeing strategies, we present a simulation model that can handle an arbitrary system layout as well as arbitrary numbers of AGVs and pedestrians causing congestion in the system. We introduce a dynamic vehicle routeing strategy based on hierarchical simulation that operates as follows: at the time of each AGV routeing decision in the main simulation, subordinate simulations are performed to evaluate a limited set of alternative routes in succession until the current routeing decision can be ® nalized and the main simulation resumed. A case study involving a prototype AGV system operating under the control of a global vision system illustrates the advantages not only of this strategy but also of global-vision-based control.

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Section: Computer Simulation Modelsmentioning

confidence: 99%

Evaluation of AGV routeing strategies using hierarchical simulation

Seifert¹,

Kay²,

Wilson³

1998

International Journal of Production Research

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“…As an alternative to simulation, analytical approaches to the design of AGV systems have been proposed. For example, mathematical models have been used to estimate the required number of vehicles for a given system [5,6] and to design the flow-path layout [7,8]. However, mathematical techniques can produce baffling problems when applied to industrial cases.…”

Section: Introductionmentioning

confidence: 99%

AgvSimNet: A Petri-Net-Based AGVS Simulation System

Hsieh

Chen

1999

The International Journal of Advanced Manufacturing Technology

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This paper presents a Petri-net (PN) based automated guided vehicle system (AGVS) simulation system, AgvSimNet. The system is designed so that it can be used not only for off-line evaluation of a given flow-path layout and/or management strategy, but also for on-line system monitoring and dynamic dispatching control. AgvSimNet adopts modular PN modelling techniques for constructing complicated AGVS models. Endusers of the system are not required to write any code to conduct their simulation tasks. Some special functions of the AGVS, such as zone control, blocking phenomenon and twostep-ahead forecast, are incorporated into the system. These special functions make the AGVSimNet model more accurate. Several common vehicle management rules are included in the system for users' elaboration and comparative study. Two verification and three application examples are presented to show the effectiveness of AgvSimNet. The results indicate that AgvSimNet gives satisfactory results for AGVS off-line evaluation. It also opens a promising new direction in applying simulators for on-line AGVS monitoring and dynamic vehicle dispatching control.

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“…Two more simulation tools, SAE/AGVS and AGVSim2, were developed by Duffau and Bloche s and Gaskins and Tanchoco. 6 Other researchers, including Gaskins, Tanchoco, and Taghaboni, v Kaspi and Tanchoco, s Egbelu, 9 and Kim and Tanchoco, ~° concentrated on developing analytical models for the flowpath optimization and/or the vehicle routes. Dhouib and Kadi" presented a prototype expert system named KADS for collision avoidance and vehicle routing.…”

Section: Introductionmentioning

confidence: 99%