A generalised sequencing problem for unit-load automated storage and retrieval systems

2007 ◽  
Vol 2 (4) ◽  
pp. 393 ◽  
Author(s):  
Eunyong Chung ◽  
H. Felix Lee
Keyword(s):  
Unit Load ◽  
Sequencing Problem ◽  
Storage And Retrieval ◽  
Retrieval Systems ◽  
Automated Storage

Innovative Estimating Travel Time Model for Dual-Command Cycle Time of Stewart-Gough Platform in Automated Storage/Retrieval Systems

2012 ◽  
Author(s):  
Muawia Ramadan ◽  
Bashir Salah ◽  
Bernd Noche
Keyword(s):  
Travel Time ◽  
Unit Load ◽  
Time Model ◽  
Parallel Wire ◽  
Storage And Retrieval ◽  
Retrieval Systems ◽  
Automated Storage ◽  
Stewart Gough Platform ◽  
Numerical Case Study

The travel time models of automated storage and retrieval systems (AS/RS’s) have been widely used in distribution and production environments. This paper extends previous work presented on impact design aspects of automated storage/retrieval systems by determining the expected cycle travel time for single command. Our new study improves the throughput performance rate of new AS/RS’s design on cycle travel time that will be specified by estimating travel time for dual command to serve as storage and retrieval (S/R) machine using a parallel wire-based Stewart-Gough platform (parallel wire robot). This improved efficiency in new design is called Stewart-Gough Platform based Automated Storage and Retrieval Systems (SGP-AS/RS’s). A numerical case study has been presented to clarify the travel time analysis based on mini unit-load storage and retrieval system. The improved throughput has been demonstrated by making a comparison between the conventional AS/RS results and the (SGP-AS/RS’s) results in the numerical case study. The effectiveness and ability of (SGP-AS/RS’s) has been proofed by determining the expected travel time for single command and dual command for random and classed-based analysis of storage assignment.

scholarly journals On sequencing policies for unit-load automated storage and retrieval systems

2013 ◽  
Vol 52 (4) ◽  
pp. 1090-1099 ◽  
Author(s):  
Jean-Philippe Gagliardi ◽  
Jacques Renaud ◽  
Angel Ruiz
Keyword(s):  
Unit Load ◽  
Storage And Retrieval ◽  
Retrieval Systems ◽  
Automated Storage
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