Travel time model for shuttle-based storage and retrieval systems

Lerher, Tone; Ekren, Banu Yetkin; Đukić, Goran; Rosi, Bojan

doi:10.1007/s00170-014-6726-2

Cited by 116 publications

(92 citation statements)

References 22 publications

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“…For example, Lerher et al [22] presented an analytical travel time model for the computation of travel (cycle) times for SBS/RS. The proposed models provide mean travel time estimations for SC and DC cycles, where simulation models tested the performance of the developed models.…”

Section: Literature Reviewmentioning

confidence: 99%

Parametric Study of Throughput Performance in SBS/RS Based on Simulation

Lerher¹,

Borovinšek²,

Ficko³

2017

Int. j. simul. model.

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This paper presents an analysis of cycle times and throughput performances of Shuttle-Based Storage and Retrieval Systems (SBS/RSs), a relatively new technology that is becoming an important part of automated warehouses. A parametric simulation model was developed for the purposes of this research. The model enables calculation of Single Command (SC) and Dual Command (DC) cycle times and throughput performances of SBS/RS. The model was tested on a case study, which is based on a real type of SBS/RS. Experiments were designed to evaluate the following factors, such as number of bays n x and minimum warehouse volume Q. Our research uses Design of Experiment (DOE) analysis and helps to achieve the proper dimension of the SBS/RS, which gives us the best possible performance of the SBS/RS. The simulation based on the presented model delivers the best SBS/RS designs.

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Section: Literature Reviewmentioning

confidence: 99%

Parametric Study of Throughput Performance in SBS/RS Based on Simulation

Lerher¹,

Borovinšek²,

Ficko³

2017

Int. j. simul. model.

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“…On the other hand, the horizontal movement of totes to their destination in the storage rack is facilitated by tire-captive shuttle carriers [10]. Some researchers, such as Carlo and Vis [12], Dukic et al [13], Lerher et al [14], Lerher et al [15], Lerher [16], Lerher [10], Marchet et al [17], and Marchet et al [18], have studied the analytical di culties and di erences of SBS/RS.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Several investigators have successfully employed meta-heuristic approaches to solve complex optimization problems in various subjects of engineering and scienti c elds. (14). Moreover, another meta-heuristic algorithm of simulated annealing is applied additionally to qualify and certify the solutions achieved.…”

Section: The Solution Algorithmmentioning

confidence: 99%

Energy-conscious dynamic sequencing method for dual command cycle unit-load multiple-rack automated storage and retrieval systems

2017

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Abstract. A Dual Command (DC) cycle \dynamic sequencing" method in unit-load multiple-rack AS/RS system under Time-Of-Use (TOU) electricity tari s is applied in this paper. To make a type of energy-e cient model, overconsumption cost of on-peak period electricity, penalty cost of overconsumption of power, bounds on the total consumed energy, and accessible times of all facilities are considered in the model. Moreover, a Genetic Algorithm (GA) is developed to achieve a near-optimum solution to the suggested energy-based mathematical model with the objective of minimizing the total cost of the AS/RS system under TOU tari s. Considering that no benchmark is obtainable in the literature, a Simulated Annealing (SA) algorithm is developed to certify the outcome gained. For supplementary con rmation, we compare the total cost of our model with that of single-tari model and also conduct sensitivity analysis of the allowable amount of power consumption. The system throughput, in terms of time and cost, is calculated for the model too. In the last part, sixteen numerical examples with di erent numbers of required storage/retrieval orders are suggested to display the function of the proposed procedure. Our outcomes veri ed that GA is able to obtain favorable and closer optimal solutions and the TOU tari s model get the minimum total cost.

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“…Smewet al [24] presented a simulation study to define trade-off between the conflicting objectives of maximising customer service level and minimising WorkIn-Process. Bekker [25] proposed a computationally economic approach to optimise throughout rate and allocated buffer space, which are the two conflicting objectives of the buffer allocation problem.…”

Section: Literature Reviewmentioning

confidence: 99%

Method for evaluating the throughput performance of shuttle based storage and retrieval systems

2016

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Original scientific paper In this paper a method for throughput performance calculation of shuttle based storage and retrieval systems (SBS/RS) is presented. SBS/RS represent a new technology in automated storage and retrieval systems. Since it is important to design SBS/RS right the first time due to the relative inflexibility of the physical layout, we provide a proposed method for the throughput performance calculation of these systems. The performance of the system is considered as a throughput capacity of the SBS/RS as a whole. Keywords: automated warehouses; performance analysis; shuttle based systems; throughput capacity Metoda za procjenu protočne performance automatiziranih skladišnih sustava s vozilimaIzvorni znanstveni članka U ovom radu prezentira se metoda proračuna protočne performanse skladišnih sustava sa shuttle-ovima/vozilima (eng. SBS/RS). SBS/RS zastupaju novu tehnologiju automatiziranih skladišnih sustava. S obzirom na važnost ispravnog oblikovanja (projektiranja) SBS/RS sustava "od prve" zbog relativne nefleksibilnosti fizičke izvedbe, prezentira se predložena metoda proračuna protočne performanse takvih sustava. Performansa sustava razmatra se kao protočni kapacitet SBS/RS kao cjeline.

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Travel time model for shuttle-based storage and retrieval systems

Cited by 116 publications

References 22 publications

Parametric Study of Throughput Performance in SBS/RS Based on Simulation

Parametric Study of Throughput Performance in SBS/RS Based on Simulation

Energy-conscious dynamic sequencing method for dual command cycle unit-load multiple-rack automated storage and retrieval systems

Method for evaluating the throughput performance of shuttle based storage and retrieval systems

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