Improved Empty Vehicle Balancing in Automated Material Handling Systems

Wertz, R.; Fischmann, C.; Böttinger, F.; Kasperczyk, Martin

doi:10.1109/uksim.2008.101

Cited by 3 publications

(3 citation statements)

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“…At this stage, these studies are not applicable on an industrial case. (Wertz et al 2008) and (Kiba et al 2009) briefly explain the policy of balancing vehicles. This policy, based on the definition of a minimum and maximum number of available vehicles by area, manages the available transport resources.…”

Section: Literature Reviewmentioning

confidence: 99%

“…To ensure this, various criteria are mentioned such as the need for parking spaces to avoid cluttering the area. The advanced study by (Wertz et al 2008) presents simulation results without specifying how to define the parameters of the vehicle policy (the number of vehicles by area, number of parking spaces, ...). (Kiba et al 2009) study this policy through a partial modeling which guarantees the dynamic aspects of the transport system.…”

Section: Literature Reviewmentioning

confidence: 99%

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Analyzing the impact of key parameters of vehicle management policies in a unified AMHS

Chaabane¹,

Dauzère‐Pérès²,

Yugma³

et al. 2013

2013 Winter Simulations Conference (WSC)

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This paper deals with the management of vehicles in the Automated Material Handling System of a semiconductor wafer fabrication facility. Vehicle management policies (allocation of vehicles to transport requests, positioning of idle vehicles,...) strongly impact critical performance indicators, among them the allocation time (delivery time) and the lot cycle time. In the literature, most studies on the impact of vehicle policies on delivery times focused on segregated layouts and generally do not consider minimum service transport policies. We investigate a minimum service policy which consists in keeping a minimum number of available vehicles in bays to quickly answer transport requests. After describing the transport policy, we investigate how to define its key parameters. Using a detailed discrete event simulation model of a real semiconductor manufacturing facility, various simulation studies are performed to analyze the impact of these parameters.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Analyzing the impact of key parameters of vehicle management policies in a unified AMHS

Chaabane¹,

Dauzère‐Pérès²,

Yugma³

et al. 2013

2013 Winter Simulations Conference (WSC)

View full text Add to dashboard Cite

show abstract

“…These highpriority products are typically called hot lots, which are given precedence over normal lots (Wertz et al, 2008). The traffic jams occur frequently in load and unload processes because conveyor will continuous move along the single direction.…”

Section: Introductionmentioning

confidence: 99%

Intuitive dispatching method to handle the 450 mm wafer and prioritize jobs in a conveyor of semiconductor industry

Tran

2018

Int. j. adv. appl. sci.

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An effective material handling system can help factories meet the transportation demands for new wafer size since the size increases from 300 mm to 450 mm. With advantages proved, conveyor-based automated materials handling system (AMHS) is chosen as the next generation transport system. However, this transport system also faces with the problems about traffic jams when having so much lot in loop and loading or unloading procedures. Besides, a higher priority lots should enjoy greater transportation privileges than those with a lower priority. Thus, one good dispatching rule is very helpful for an AMHS. This research proposes restructuring loop configurations for conveyor-based AMHS and develops an effective dispatching rule, named rota-caster in heuristic preemptive dispatching method (R-HPD). Simulation results demonstrate that the R-HDP can provide better performances than the best existed method (DPD). The R-HPD rule reduces the average delivery time by 49.4% for hot lots and 50.5% for normal lots. Moreover, the average delivery time of normal lot is not affected so much when bay loading and hot lot ratio increase.

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Using Rotacaster in The Heuristic Preemptive Dispatching Method for Conveyor-Based Material Handling of 450mm Wafer Fabrication

Wang

Hsu

et al. 2016

IEEE Trans. Semicond. Manufact.

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Improved Empty Vehicle Balancing in Automated Material Handling Systems

Cited by 3 publications

References 0 publications

Analyzing the impact of key parameters of vehicle management policies in a unified AMHS

Analyzing the impact of key parameters of vehicle management policies in a unified AMHS

Intuitive dispatching method to handle the 450 mm wafer and prioritize jobs in a conveyor of semiconductor industry

Using Rotacaster in The Heuristic Preemptive Dispatching Method for Conveyor-Based Material Handling of 450mm Wafer Fabrication

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