{"title":"区域对自动驾驶汽车仓库吞吐量和周期时间的影响","authors":"D. Roy, A. Krishnamurthy, S. Heragu, C. Malmborg","doi":"10.1109/COASE.2009.5234102","DOIUrl":null,"url":null,"abstract":"Autonomous Vehicle based Storage and Retrieval System (AVS/RS) is a material handling technology, which has been proposed as an alternative to crane-based AS/RS. In AVS/RS, autonomous vehicles provide horizontal movement (x and y axis) within a tier whereas lifts provide vertical movement (z axis) between tiers. The transaction cycle time is composed of waiting time for vehicles and lifts, horizontal and vertical travel times, and load/unload times. In this research, we analyze the influence of multiple load/unload points on transaction cycle times and the design-tradeoffs involved in warehouse zoning. We model the system as a multi-class semiopen queuing network model with class switching and develop a decomposition based approach to evaluate system performance and obtain design insights. We validate the models using detailed simulation.","PeriodicalId":386046,"journal":{"name":"2009 IEEE International Conference on Automation Science and Engineering","volume":"7 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2009-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":"{\"title\":\"Impact of zones on throughput and cycle times in warehouses with Autonomous Vehicles\",\"authors\":\"D. Roy, A. Krishnamurthy, S. Heragu, C. Malmborg\",\"doi\":\"10.1109/COASE.2009.5234102\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Autonomous Vehicle based Storage and Retrieval System (AVS/RS) is a material handling technology, which has been proposed as an alternative to crane-based AS/RS. In AVS/RS, autonomous vehicles provide horizontal movement (x and y axis) within a tier whereas lifts provide vertical movement (z axis) between tiers. The transaction cycle time is composed of waiting time for vehicles and lifts, horizontal and vertical travel times, and load/unload times. In this research, we analyze the influence of multiple load/unload points on transaction cycle times and the design-tradeoffs involved in warehouse zoning. We model the system as a multi-class semiopen queuing network model with class switching and develop a decomposition based approach to evaluate system performance and obtain design insights. We validate the models using detailed simulation.\",\"PeriodicalId\":386046,\"journal\":{\"name\":\"2009 IEEE International Conference on Automation Science and Engineering\",\"volume\":\"7 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2009-08-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"9\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2009 IEEE International Conference on Automation Science and Engineering\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/COASE.2009.5234102\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2009 IEEE International Conference on Automation Science and Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/COASE.2009.5234102","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Impact of zones on throughput and cycle times in warehouses with Autonomous Vehicles
Autonomous Vehicle based Storage and Retrieval System (AVS/RS) is a material handling technology, which has been proposed as an alternative to crane-based AS/RS. In AVS/RS, autonomous vehicles provide horizontal movement (x and y axis) within a tier whereas lifts provide vertical movement (z axis) between tiers. The transaction cycle time is composed of waiting time for vehicles and lifts, horizontal and vertical travel times, and load/unload times. In this research, we analyze the influence of multiple load/unload points on transaction cycle times and the design-tradeoffs involved in warehouse zoning. We model the system as a multi-class semiopen queuing network model with class switching and develop a decomposition based approach to evaluate system performance and obtain design insights. We validate the models using detailed simulation.