Dissertations / Theses: 'Material handling system design'

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Wan, Yen-Tai. "Material transport system design in manufacturing." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-03282006-231022/.

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Thesis (Ph. D.)--Industrial and Systems Engineering, Georgia Institute of Technology, 2006.
Dr. Yih-Long Chang, Committee Member ; Dr. Martin Savelsbergh, Committee Member ; Dr. Leon McGinnis, Committee Co-Chair ; Dr. Gunter Sharp, Committee Chair ; Dr. Doug Bodner, Committee Member ; Dr. Joel Sokol, Committee Member.

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Akincilar, Sera, and Cameron Rad. "Material Handling System Design: A Case-Study in Bosch Rexroth Japan." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Industriell organisation och produktion, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-24102.

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In today’s fierce competitive global markets, customers are demanding adjustable lot sizes, shorter lead times, higher quality and flexibility; in short, they want it all. In order to stay competitive in the market, companies need to attain both customer satisfaction and cost reduction in production operations. Material Handling Systems (MHS) is the place to accomplish this goal, since they have a direct impact on production. Therefore, the aim of this study was to design an in-house MHS that could be efficient for the production it serves. With this intention, a case-study has been conducted in Bosch Rexroth Japan. During the study, the information gathered through various sources; interviews, observations and measurements. Further, the gathered data is evaluated according to main pillars of the theoretical framework, which includes design principles and physical elements, information and software, human and management. By analyzing the findings from literature review and empirical study, first problems and challenges related to MHSs are identified. Thereafter, possible features that the system should posses are elicited and a design is built out of the selected features. To conclude, the results show that the success is not solely depending on system’s physical attributes; on the contrary, it is more related to rapid and accurate information sharing within the system. Another vital element is the interaction between system and the people, who are utilizing and operating the system. In general terms, the research took MHS design problems from one-dimensional equipment selection processes and enriches them by adding information sharing, human and management angles to design steps.

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Dhanal, Avirat. "Design and Analysis of Material Handling System with Simulation-Based Optimization." Thesis, Högskolan i Skövde, Institutionen för ingenjörsvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-16411.

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In today’s world, simulation and optimization are playing a vital role in reducing the time, cost and preserving resources. In manufacturing industries, there are ample amount of problems that go on with the expansion of the industry. In such cases, to tackle these problems simulation can be helpful to check whether any change in the current situation makes any effect on the current efficiency of the overall plant. In the presented case study, a solution to the problem of internal and external logistics has been designed by using simulation and optimization to improve part of a material flow of an organization. Basically, the organization whose major production is established in the south of Sweden deals with the manufacturing and assembly of equipment. Before the dispatch, all of them go to the painting section which is the expansion of the present shop floor. However, the design and analysis of the material handling system to feed the new painting line which is going to be established by the organization is the aim of this case study. While achieving this aim the literature regarding the discrete event simulation, Lean and Simulation-Based optimization related to the material handling system has been done. Furthermore, the appropriate material handling systems along with the different scenarios were suggested to reduce the cost and the lead times between the production line and the new painting line. To support this process a methodology combining simulation, optimization and lean production has been implemented under the framework of the design and creation research strategy. In the Kaizen workshop organized at a company with managers and stakeholders, the designed scenarios were presented and after some discussion one of them was chosen and the selected scenario was designed and optimized. Moreover, the Simulation-Based multi-objective optimization has been helpful for the optimization of the designed model proposed as a final solution.

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Wu, Yue. "Computer-aided design of cellular manufacturing layout." Thesis, Durham University, 1999. http://etheses.dur.ac.uk/1464/.

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Napisa, Rodolfo R. "Conceptual design of a material handling system for a county airport mail center." Master's thesis, This resource online, 1997. http://scholar.lib.vt.edu/theses/available/etd-12162009-020127/.

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6

Chen, Ming-Te Mark. "Flow path design of a class of material handling systems for robustness and reliability." Diss., Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/25381.

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7

Bakkalbasi, Omer. "Flow path network design and layout configuration for material delivery systems." Diss., Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/25617.

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8

Ho, John Kin Lim. "Some object-oriented design and software control methods of a flexible material handling system, operating in a CIM environment." Thesis, University of East London, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282914.

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9

Boparai, Ramanpreet. "Integration of operation allocation and material handling in the design of flexible manufacturing systems." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ62188.pdf.

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Shen, Yu-Cheng. "The impact of vehicle dispatching on the design of multiple-transporters material handling systems." Diss., Virginia Tech, 1995. http://hdl.handle.net/10919/40224.

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Hedin, Albin, and Philip Bowall. "Utformning av belöningssystem som styrningsverktyg i tillverkningsindustri- En kvalitativ fallstudie av Toyota Material Handling Manufacturing Sweden AB : Design of Incentive System as a Management Control Tool in a Manufacturing Environment- A Qualitative Case Study of Toyota Material Handling Manufacturing Sweden AB." Thesis, Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-148566.

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Many organisations use incentive systems as a management control tool to steer the organisation towards defined goals by generating common incentives for the employees. Previous studies have shown that the design of an incentive system affect what results it may generate. Therefore, this study aims to, within the context of manufacturing industry, investigate a configuration of design choices’ impact on the effect of an incentive system. A literature study has been conducted to map what effect the research shows different design choices and how these impacts the employees and the organisation. This case study of Toyota Material Handling Manufacturing Sweden AB investigates how their incentive system is designed and what effects this generates from their organisational specific context. Motivation, participation, cooperation, culture and performance were factors evaluated in the study. Data was mainly gathered through qualitative interviews conducted with employees to gain an understanding of the use and design of the incentive system together with how it fit within the organisational context. The empirical data was then analysed and related to previous studies on the subject. The conclusion and discussion base on the effects of an incentive system and how these effects are affected by the design of the incentive system itself, together with how these effects may be reduced when alternative management control tools hold a stronger presence with the employees. Even when the incentive system is designed by what previous studies has shown to generate the desired effect, the organisational specific context may affect the result. Further, it is discussed that the highest results are achieved when the incentive system is designed to work within a specific context, as it then strives towards the same vision as other management control tools.

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Vuoluterä, Fredrik, and Oliver Carlén. "Analysis of material flow and simulation-based optimization of transportation system : The combination of simulation and Lean to evaluate and design a transportation system." Thesis, Högskolan i Skövde, Institutionen för ingenjörsvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-15974.

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The thesis has been performed in cooperation with a Swedish manufacturing company. The manufacturing site of the company is currently implementing a new machine layout in one of its workshops. The new layout will increase the product flow to another workshop on the site. The goal of the thesis was to evaluate the current transportation system and suggest viable alternatives for the future product flow. By means of discrete event simulation these alternative solutions would be modelled and subsequently optimized to determine if their performance is satisfactory. An approximated investment cost of the solutions would also be estimated. By performing a literature review and creating a frame of reference, a set of relevant methodologies were selected to provide a foundation to the project. Following these methodologies, the current state of transportation was identified and mapped using Value Stream Mapping. Necessary data from the current flow was identified and collected from the company computer systems. This data was deemed partly inaccurate and further verification was needed. To this end, a combination of Genchi Genbutsu, assistance from onsite engineers and a time study was used to verify the unreliable data points. The data sets from the time study and the company data which was deemed valid were represented by statistical distributions to provide input for the simulation models. Two possible solutions were picked for evaluation, an automated guided vehicle system and a tow train system. With the help of onsite personnel, a Kaizen Event was performed in which new possible routing for the future flow was evaluated. A set of simulation models portraying the automated guided vehicle system and the tow train system were developed with the aid of simulation software. The results from these models showed a low utilization of both systems. A new set of models were developed, which included all the product flows between the workshops. The new flows were modelled as generic pallets with the arrival distribution based on historical production data. This set of models were then subject for optimization with regard to the work in process and lead time of the system. The results from the optimization indicates the possibility to reduce the overall work in process by reducing certain buffer sizes while still maintaining the required throughput. These solutions were not deemed to be ready for implementation due to the low utilization of the transportation systems. The authors instead recommend expanding the scope of the system and including other product flows to reach a high utilization.

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Hansson, Tengberg Henrik, and Andreas Adlerborn. "Design of an Assembly System at AERCRETE INDUSTRIES." Thesis, Jönköping University, Jönköping University, JTH, Industrial Engineering and Management, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-10742.

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The forming of an assembly system is a complex task, which should be considered as never ending. In order to successfully plan and implement an assembly system it is of vital importance that the obstacles and preconditions that have an impact on the system are identified and evaluated. This together with the necessary support activities and the attributes of the product to be assembled constitutes the starting point for the forming of the assembly system.

The aim of this thesis is to link the theoretical findings with the issues stated above, and through this explain a best practice approach when forming the assembly system. The theoretical work aims at describing the nature and activities within assembly and manufacturing systems and explains these in three different levels of strategies divided into Manufacturing strategies, Layout, material flow and design strategies and finally Logistic, material handling and quality strategies. Then the obstacles and preconditions found are discussed and evaluated which set the basis for the forming of the assembly system and by linking these with the relevant theory, conceptual design proposals for the assembly system and the Logistic support system are formed.

These are then evaluated and finally a proposal for the detailed layout of the assembly system is given. This proposal is then to be used as a guideline for the company Aercrete when forming their assembly system.

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Khachatryan, Margarit. "Small parts high volume order picking systems." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-11192006-170829/.

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Thesis (Ph. D.)--Industrial and Systems Engineering, Georgia Institute of Technology, 2007.
Paul M. Griffin, Committee Member ; Gunter P. Sharp, Committee Member ; Hayriye Ayhan, Committee Member ; Leon F. McGinnis, Committee Chair ; Soumen Ghosh, Committee Member.

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Huang, Feixiang. "Robotic Delivery System for Material Handling." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1417651790.

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Al-Meshaiei, Eisa Abdullah Eisa S. "An expert system for material handling equipment selection." Thesis, University of Warwick, 1999. http://wrap.warwick.ac.uk/36429/.

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Manufacturing Systems are subject to increasingly frequent changes in demand in terms of number and type of products they produce. It is impractical to continually reconfigure the facilities, but it is possible to modify the material handling arrangements so that the selected equipment is the most appropriate for the current requirements. The number of decisions that need to be made coupled with the rate at which decisions must be taken adds significant difficulty to the problem of equipment selection. Furthermore there are relatively few experts who have the necessary range of knowledge coupled with the ability to use this knowledge to select the most appropriate material handling solution in any situation. Access to such experts is therefore greatly restricted and decisions are more commonly made by less experienced people, who depend on equipment vendors for information, often resulting in poor equipment selection. This research first examines the significance of appropriate material handling equipment choice in dynamic environments. The objective is to construct a computer based expert system utilising knowledge from the best available sources in addition to a systematic procedure for selection of material handling equipment. A new system has been produced, based on the Flex language, which elicits from the inexperienced user details of the handling requirements in order to build an equipment specification. It then selects from among 11 handling solution groups and provides the user with information supporting the selection. Original features of the system are the way in which the knowledge is grouped, the ability of the procedure to deal with quantifiable and non-quantifiable equipment and selection factors, selection of decision analysis method and the validation of the final choice to establish confidence in the results. The system has been tested using real industrial data and has been found in 81% of cases to produce results which are acceptable to the experts who provided the information.

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Cheung, Wing Sze. "A study of material handling system for apparel industry /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?IEEM%202005%20CHEUNG.

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Babiceanu, Radu Florin. "Holonic-based control system for automated material handling systems." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/28326.

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In real-word manufacturing environments, finding the right job sequences and their associated schedules when resource, precedence, and timing constraints are imposed is a difficult task. For most practical problems classical scheduling easily leads to an exponential growth in the number of possible schedules. Moreover, a decision time period of hours or even minutes is too long. Good solutions are often needed in real-time. The problem becomes even more complicated if changes, such as new orders or resource breakdowns, occur within the manufacturing system. One approach to overcome the challenges of solving classical scheduling problems is the use of distributed schemes such as agent or holonic-based control architectures. This dissertation presents an innovative control architecture that uses the holonic concept, capable of delivering good solutions when applied in dynamic environments. The general holonic control framework presented in this research has specific characteristics not found in others reported so far. Using a modular approach it takes into account all the categories of hardware and software resources of a manufacturing system. Due to its modularity, the holonic control framework can be used for assigning and scheduling different task types, separately or simultaneously. Thus, it can be used not only for assigning and scheduling transport tasks, but also for finding feasible solutions to the job assignment and scheduling of processing tasks, or to better utilize the auxiliary equipment and devices in a manufacturing system. In the holonic system, under real-time constraints, a feasible schedule for the material handling resources emerges from the combination of individual holon's schedules. Internal evaluation algorithms and coordination mechanisms between the entities in the architecture form the basis for the resultant schedules. The experimental results obtained show a percentage difference between the makespan values obtained using the holonic scheduling approach and the optimal values of under seven percent. Since current control systems in use in industry lack the ability to adapt to dynamic manufacturing environments, the holonic architecture designed and the tests performed in this research could be a part in the effort to build the foundations for the control systems of the next generation manufacturing systems.
Ph. D.

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Sun, Jiake, and Wenjie Jiang. "Analysis Tool for Warehouse Material Handling Data." Thesis, Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-15205.

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Effective material handling plays a key role in cutting costs. Well-organized material handling can cut production cost by optimizing product transfer paths, decreasing the damage rate and by increasing the utilization of storage space. This report presents the development of an analysis system for StoraEnso Hylte’s paper reel database. The system extracts and classifies key points from the database which are related to material handling; like attributes related to the product (paper reel), forklift truck information and storage cell utilization. The analysis based on paper reels includes the damage rate and transfer paths of paper reels. A mathematical model is also presented, which tells us that the probability of damage per transport is more important than the number of transports for paper reels handling. The effect of decreasing non-optimal transportation (optimize the path) is very small.

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Rocha, André Dionísio Bettencourt da Silva. "An agent based architecture for material handling systems." Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/10504.

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Dissertação para obtenção do Grau de Mestre em Engenharia Electrotécnica e de Computadores
In the recent past, market requirements and consequently the production lines changed too. With the customization of products and the growing number of products to produce, the dy-namism and flexibility of the lines are now requirements of extreme importance. A traditional approach indicates great difficulty in satisfying those needs and as such has appeared some proposals in order to solve them. The proposed approaches are mostly related to scheduling and production planning. The transportation system is not usually inserted in the control architecture and system reconfiguration, constantly being put aside in order to this issue. This work proposes architecture to support self-organized transportation system, where it performs control functions and management. The architecture was developed for a system com-prising conveyors where the stations operate. The proposed work is a multi-agent architecture that use Dijkstra’s algorithm to improve the routing of products and materials. The main features of architecture are load balancing pre-sent in conveyors and ability to plug and unplug stations in runtime. The architecture was first tested in a virtual environment in order to check the behavior of the same and was subsequently tested in a real industrial cell in order to demonstrate its use in a real system.

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Cawood, Gareth James. "Design of a low-cost autonomous guided cart for material handling." Thesis, Nelson Mandela Metropolitan University, 2015.

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This dissertation covers the design and manufacture of an autonomous guided cart (AGC) for use in the material handling industry. General Motors South Africa (GMSA) requires a low-cost AGC for use in their Struandale plant. A budget of R35 000 per unit was proposed. The researcher, in collaboration with staff at GM, compiled a list of engineering requirements for the AGC. After research into the unique problems of the project, an examination of a previous design attempt by staff of GM Thailand, the researcher developed a new design, the subject of this report. Different solutions for each design problem were investigated before the design was finalised. A three-wheeled vehicle was designed making use of two motors in a differential-drive setup to control motion. Navigation is via a line-following mechanism, using an induction sensor-array in conjunction with a pre-laid metallic strip. To aid the design, the system was modelled to understand the different control elements at play. The researcher developed software for several aspects of the design: for the PLC controlling the system and motors; for a microcontroller that communicates with the PLC and a wireless module; for a computer server that communicates with a second wireless device, receiving information from the PLC; and a web interface to view this information. These form the SCADA integration of the project. The final product meets the GMSA specifications. It is a robot capable of towing a trolley of mass not exceeding 350 kg. While the robot is able to navigate a pre-laid route, it cannot reliably stop at marked locations. It is possible to monitor the system via a web-interface. The robot is capable of operating for an entire 8-hour shift before the batteries need to be recharged. The total cost of the prototype was R26 340.

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Shrivastava, Ameya R. "Simulation Modeling of Warehouse Environment Utilizing AGVS Material Handling Systems." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1114798132.

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Menozzi, Grazia Chiara. "Sviluppo del design di un prodotto industriale material handling in contesto retail." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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Con l’arrivo della pandemia di Covid-19 i trend di consumo e di vendita sono cambiati. Le persone sono state chiuse nelle loro case durante il lockdown impossibilitate a spostarsi se non per motivi di lavoro o salute. Un’unica cosa era possibile: andare a fare la spesa. Sostenibilità e igiene sono diventare le parole chiave. L’analisi del mutamento delle abitudini di vita e di acquisto dei consumatori si è necessariamente integrata con le nuove strategie che le imprese hanno dovuto formulare per sopravvivere in questo panorama. Le nuove tecnologie e lo sviluppo dei modelli di business verso il digitale sono risultati essere il percorso da intraprendere. L’obiettivo di questo studio è quello di determinare una soluzione che possa soddisfare i nuovi bisogni degli utenti, trovando una soluzione che sia adatta alle loro nuove aspettative nei confronti delle aziende. La formulazione della soluzione è stata identificata grazie all’integrazione con il mondo del material handling, ricercando risposte che si basassero sulla movimentazione dei materiali e sull’automazione dei sistemi. Unendo il mondo del material handling, delle aziende e, in primis, quello delle esigenze dei consumatori si è realizzato un prodotto-servizio che agevolasse l’esperienza di spesa. Viene così permesso l’acquisto di prodotti di qualità a prezzi minori, accorciando la catena di approvvigionamento, con una esperienza totalmente sicura dal rischio di contagio e nel rispetto dell’ambiente e dei produttori.

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AGARKAR, KEDAR GIRISH. "FLOW PATH DESIGN AND RELIABILITY OF AUTOMATED GUIDED VEHICLES IN MATERIAL HANDLING." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1089661534.

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Sakai, Satoru. "Design and Evaluation of a Heavy Material Handling Manipulator for Agricultural Robots." Kyoto University, 2003. http://hdl.handle.net/2433/149010.

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Kyoto University (京都大学)
0048
新制・課程博士
博士(農学)
甲第10287号
農博第1359号
新制||農||870(附属図書館)
学位論文||H15||N3808(農学部図書室)
UT51-2003-H708
京都大学大学院農学研究科地域環境科学専攻
(主査)教授梅田幹雄, 教授笈田昭, 助教授大須賀公一
学位規則第4条第1項該当

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Primack, Willow. "Analysis and productivity improvement of an automated material handling system through simulation." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/99026.

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Thesis: M.B.A., Massachusetts Institute of Technology, Sloan School of Management, 2015. In conjunction with the Leaders for Global Operations Program at MIT.
Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015. In conjunction with the Leaders for Global Operations Program at MIT.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 66-67).
As Amazon.com has grown, the company has invested in warehouse systems similar to those traditionally found in manufacturing. These systems are a complex and interconnected set of manned work processing stations linked together by conveyance. This thesis examines one such system, arranged as a set of parallel single piece workflow lines joined by a central computerized sorter that route work between lines, and examines the effect of sorter algorithms and line capacity on production output. Work studies, interviews, and a practical experiment suggest a deterioration in the feedback provided to the central sorter for work routing. A Monte Carlo simulation model of the system further supports this hypothesis, suggesting that system throughput is 11.7% lower than a system that perfectly routes work to line in a pull fashion. While perfect routing is not practically feasible, the thesis then explores two routing heuristics designed around starvation response and dynamic capacity analysis, which simulation suggest may yield a 6.73% increase in throughput. In doing so, the thesis provides a case study on process improvement using simulation to characterize a complicated mechanical production system that is otherwise analytically intractable.
by Willow Primack.
M.B.A.
S.M.

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Holtz, Andrew Joseph. "Design of a prototype winegrape picking container handling system /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2005. http://uclibs.org/PID/11984.

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Dai, Bin. "Development of a free-ranging material handling system for manufacturing and warehouse application /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?IELM%202009%20DAI.

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Alghalayini, Rami. "Improving an internal material handling system. A case study of a Swedish company in food industry." Thesis, Tekniska Högskolan, Jönköping University, JTH, Produktionsutveckling, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-50242.

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Currently, customers are exerting a lot of pressure on companies by demanding for best product quality, customized products, reduced product lead time and reliable product delivery. Therefore, for companies to be highly competitive, there is need to improve productivity and delivery performance by having an efficient material flow. Nevertheless, the task of making the material to flow efficiently throughout the manufacturing process up to when the customer receives the product is not easy. To solve this, companies are focusing on the material handling system as it has an impact on efficient material flow and productivity. Hence, the aim of this project was to explore how an internal material handling system can be improved to guarantee a better delivery performance. To fulfil the aim, a single case study was undertaken at a dairy food producing company in Jonkoping. The information on the subject area was obtained through interviews, observation at the company and an extensive literature review. The information that was obtained was assessed in accordance with the framework of the project that includes; principles and physical elements used for designing a material handling system, software and information, and human and management. Combined analysis of the findings from the empirical study and the extensive literature review helped to identify the problems faced in an internal material handling system of the company. This was followed by identifying ways of improving material handling system and thereafter, improvement suggestions were made targeting enhancement of the delivery performance of the system. In conclusion, the findings indicate that improvement of an internal material handling system does not only depend on improving the physical attributes of the system, far from it, it is more dependent on having an efficient and effective information system. Another factors that came out is that there should be a proper integration of the material handling system and the workers operating the system. From a systems perspective this research has added information sharing and human and management to the one dimensional physical elements improvement of a material handling system.

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Pachowko, Antonia Dimetrio. "Design and modelling of a coarse particulate slurry handling system." Thesis, University of Leeds, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.410970.

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Ferreira, Tremaine Pierre. "Research and development of an intelligent AGV-based material handling system for industrial applications." Thesis, Nelson Mandela Metropolitan University, 2015. http://hdl.handle.net/10948/21711.

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The use of autonomous robots in industrial applications is growing in popularity and possesses the following advantages: cost effectiveness, job efficiency and safety aspects. Despite the advantages, the major drawback to using autonomous robots is the cost involved to acquire such robots. It is the aim of GMSA to develop a low cost AGV capable of performing material handling in an industrial environment. Collective autonomous robots are often used to perform tasks, that is, more than one working together to achieve a common goal. The intelligent controller, responsible for establishing coordination between the individual robots, plays a key role in managing the tasks of each robot to achieve the common goal. This dissertation addresses the development of an AGV capable of such functionality. Key research areas include: the development of an autonomous coupling system, integration of key safety devices and the development of an intelligent control strategy that can be used to govern the operation of multiple AGVs in an area.

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Anderson, Roger J. "Characterization of Performance, Robustness, and Behavior Relationships in a Directly Connected Material Handling System." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/26967.

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In the design of material handling systems with complex and unpredictable dynamics, conventional search and optimization approaches that are based only on performance measures offer little guarantee of robustness. Using evidence from research into complex systems, the use of behavior-based optimization is proposed, which takes advantage of observed relationships between complexity and optimality with respect to both performance and robustness. Based on theoretical complexity measures, particularly algorithmic complexity, several simple complexity measures are created. The relationships between these measures and both performance and robustness are examined, using a model of a directly connected material handling system as a backdrop. The fundamental causes of the relationships and their applicability in the proposed behavior-based optimization approach are discussed.
Ph. D.

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Wilhelm, Jay Paul. "Aircraft intercom system design for Project Oculus." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3841.

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Thesis (M.S.)--West Virginia University, 2005.
Title from document title page. Document formatted into pages; contains ix, 89 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 58-59).

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Choi, Soodong. "Material flow system integration in EOQ, ELSP, and Kanban production environments /." free to MU campus, to others for purchase, 1998. http://wwwlib.umi.com/cr/mo/fullcit?p9901227.

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Kotovsky, Jack. "Design of a de-skewing system for automatic bill handling machines." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/27970.

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36

ZHUANG, WEN-ZHONG, and 莊文忠. "The design of timed AHP material handling expert system." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/36179284233520566589.

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37

FU, YU-FEN, and 傅毓芬. "The design of feedback-characterized AHP material handling expert system." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/69118580237787260444.

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38

Jhang, Zih-Yun, and 張子云. "A Study of Simulating Material Handling System and Layout Design." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/08450299463776113011.

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碩士
國立中興大學
企業管理學系
102
According to the simulation analysis, we can learn that the Enhance Machine Utilization is the best dispatching rule. Moreover, the improvement of entity and process criteria is the best in that dispatching rule. However, when the number of automated guided vehicles increases, the efficiency of the material handling system becomes obviously better. It means that it is not very helpful in improving performance of choosing which layout or dispatching rule when we fulfill the most important resource which we didn’t have in the previous process. And in performance, the strategies of software and hardware have different improvement. The improving range is twice to three times in using hardware than using software. If we want to have a better performance, we also need to increase the expense of fixed cost. Managers should take the short-term, midterm and long-term targets as considerations, simulate, select and integrate the most suitable strategy to promote product competitiveness and the optimization of economies of scale.

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39

Govender, Daryl Sebastian. "A design methodology investigation and the design of a material handling system." Thesis, 2000. http://hdl.handle.net/10413/5289.

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This dissertation is undertaken under the auspices of both the CSIR, Division of Mining Technology and the University of Natal, School of Mechanical Engineering. The CSIR have outlined two fundamental objectives of the dissertation. Firstly, the need for competent design engineers has become increasingly evident. To this end, an evaluation and research into the science of design methodology has been conducted and regarded as a significant component of the thesis. The rationale behind this aim is that the subject of design has been practiced for thousands of years, but an understanding of the process is comparably in its infancy. The importance of the steps involved in the mechanical design process can in no uncertain terms be overemphasized as the adherence there to results in designs that are least likely prone to failure as well as the attainment of highly efficient product design time scales. This is vitally important more especially when the drive towards multifunctional multidisciplinary teams is rapidly developing in the global market place. Secondly, the CSIR, having done the appropriate market research, have defined the need for the design of a timber handling system to be implemented in a deep level mining environment. It is the authors expressed intent not to separate the theory from the design at hand but rather to allow this thesis to become, for the reader, forum where a holistic and integrated approach to design can be presented.
Thesis (M.Sc.)-University of Natal, Durban, 2000.

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40

Lin, Jinq-Jyh, and 林靖智. "The Design of Material Handling System for the Modularized Wafer Fabrication Factories." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/80495583191276788539.

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碩士
國立交通大學
工業工程與管理系
87
In recent years, semiconductor industry becomes the booming industry in Taiwan. The competition between the wafer fabrication factories hence becomes more and more keen. In such environments, enhancing the throughput and delivery performance is the only way to keep the competitive superiority. Wu [32, 33] proposes the architecture for modularized, economical, flexible and automated semi-conductor factory. In this thesis, corresponding design for the plant layout, the path of material flow, the material handling system is proposed , the releasing rule for Wu''s modularized wafer fab. A simulation model is built to collect its system performance. For the plant layout, this thesis contrives the facility layout to be flow line in order to reduce production cycle time, and to design the path of material flow so as to shorten material handling distance. For the material handling system, the major idea is to prevent material flow from being system bottleneck. Thus, the cycle time of the monorail traveling is set so as to fit the throughput rate of bottleneck workstation. Also, the priority for moving requests are set according to the status of bottleneck to keep material flow smooth before and after bottleneck. Finally, for the design of releasing rule, the policy of releasing six lots simultaneous is adopted to fit the feature of the batch machine. The releasing rate is set with considerations of the bottleneck''s throughput rate, and then adjusted by using fixed-WIP method so as to control the WIP level and the cycle time in an acceptable range. The simulation results show that with such a design, the modularized wafer fab can reach the goal of high throughput, low production cycle time and low WIP level. Such a design makes a contribution in increasing throughput and enhancing delivery ability of the wafer fabrication factories.

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41

Lee, Sammy, and 李雨庭. "Design of Automated Material Handling Systems in Wafer Fab." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/53108056561127094971.

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碩士
中原大學
工業工程研究所
89
The Automated Material Handling System (AMHS) is indispensable to the Semiconductor wafer Fab and has been become rapidly widespread because of the great complexity of operation and process flow that cause the easy occurrence of miss-operation during wafers handling. It is a performance-effective improved through technique and integrated system to get wafers lot supply deliveries streamlined for the production line. Recently a lot of the rules of system running have been proposed. The rules can be modified by software readily, however, the track layout of hardware is difficult to change while it works. It is very important to make the correct decision while designing the basic construction of track layout in the very beginning stage. Once the wrong decision was made the poor-performance was caused and impossible to recover or compensate. First of all, this thesis is to give a comprehensive summary of previous research done in concept and to analyze several different rules. There will be a simulation of two dispatching rules, Shortest Travel Distance, STD, and First Come First Served, FCFS, which are most widely used, in current industry in chapter 3. And also shares with the related experience of current application in the semiconductor wafer fab. Secondly, there is a main purpose to based on the past experience and related information, here we propose three alternatives of AMHS tracks layout and analyze the three alternatives of AMHS track layout by using ARENATM simulation. To apply simulation before construction is proved to be a considerably more cost effective by means of ensuring optimized productivity rather than the cost of retrofitting changes within a fab after it has been completed and in production run stage. Results of simulation show that the best performance could be seen in Parallel Dual Circuit (PDC) and the next is Independence Dual Circuit (IDC) but Concentric Dual Circuit (CDC) is the last. The PDC demonstrate the best performance, less number of tracks and lower cost that is suitable for whom has system high reliability and less routing. IDC less performance but not much compared with PDC provides the more flexibility of route and less influence by variable factors, for example machine out of function or during preventive maintenance. Therefore, IDC is suitable for who has strong software capability and good system flexibility. This study examines the models and simulation experiments that assist with analyzing cleanroom material handling issues such as designing conventional automated material handling system. Some alternatives in the semiconductor industry were conducted to verify the effectiveness and the feasibility of this design concept. Finally, this thesis presents the current trend of wafer fabs and AMHS prospective aspect in Semiconductor.

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42

Molnar, Michael F. "Design and implementation of a high performance material handling system for flexible manufacturing." 1988. http://catalog.hathitrust.org/api/volumes/oclc/18145673.html.

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43

Ko, Ming-Cheng. "Algorithms and Automated Material Handling Systems Design for Stacking 3D Irregular Stone Pieces." Thesis, 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8338.

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The motive of this research is to develop a good stacking method with an automatic material handling system and the procedures that can increase productivity, reduce production costs, and prevent labor injury. A diversity of products leads to a number of different kinds of stacking problems. Much research has been done focusing on two-dimensional arrangement for rectangles, circles or irregular shapes, and threedimensional regular-shaped objects such as rectangular boxes. To solve stacking problems, many algorithms such as the genetic algorithm, simulated annealing and other heuristic algorithms have been proposed. The three-dimensional stacking problem has a practical application in the transportation, manufacturing, and construction industries. There has been relatively little emphasis on three-dimensional irregular objects; however, stacking three-dimensional irregular objects has become more common in industry. In this thesis research, three heuristic algorithms are proposed to stack irregular stone pieces nested in a container with multiple layers. Primary functions of the heuristic algorithms include three major parts. First, it approximates irregular shapes to a cluster of straight lines. Secondly, it arranges the approximated angles one-by-one with the proposed step-by-step rule. Finally, it considers the weight of the stone pieces from the pixel calculation for reasons of stability. The first and second algorithms are based on the area and angle of the stone piece and the third one is based on the approximated weight of the stone. An automatic real-time stacking system including pneumatic devices, sensors, relays, a conveyor, a programmable logic controller, a robotic arm, and a vision system was developed for this study. The algorithms developed were tested by this automatic stacking system for better utilization. Three performance measures were presented in the experimental result. Comparisons between the results from three proposed algorithms and that from the bottom-back-left algorithm are made. Experimental data demonstrate that the utilizations and the stabilities of the three proposed algorithms are statistically better than that of the bottom-back-left algorithm. However, the cycle times of the three proposed algorithms have no statistical difference from that of the bottom-back-left algorithm. In addition, a statistical test between each proposed algorithm is also conducted. Both the utilizations and stabilities have statistical differences between each proposed algorithm while the cycle times do not. The results of this study show that the algorithm developed works effectively for solving the stone-pieces stacking problem.

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Chen, Hung-Wei, and 陳宏偉. "The Process Layer Oriented Design of Facility Layout and Material Handling System for the Modularized Wafer Fabrication Factories." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/88244448558443200735.

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碩士
國立臺灣大學
機械工程學研究所
88
Due to the reentry appearance of semiconductor manufacturing process, the problem of material handling becomes more complex in recent facility layout. It will cause the long cycle time, high WIP level, unstable throughput, thus decreases the competition of product. Wu, the advisor of the Industrial Technology Research Institute (ITRI) of Taiwan, proposed a modular-based IC fabrication conceptual plant [1998]. Wu also illustrated several features about the modular-based IC fabrication conceptual plant. The concept was proved by Hung’s reaseach[1999]. Hung proposed the advantage of the modular fabrication factory at the status of most frequently breakdown and longest repair time. Lin’s research [1999] proposed a methodology about the design of the facility layout and material handling system of the modular fabrication factory by flow-line concept. Lin proved that the modular-based IC fabrication factory has the feature of low cycle time and low WIP level. But the flow-line oriented design is only suitable for single product case, the facility layout is lack of flexibility. This designation doesn’t almost consist with the actuality. For the reason, this study will let the modular fabrication concept more concrete. Direct on single product and multi products, separate the IC fabrication process into several process layers by process layer concept. And design the facility layout and material handling system about different number of process layer areas. Several simulation models will be constructed by the methodology of this study, and compare the system performance between these cases of different process layer areas. Choose the best performance case to compare with the traditional IC fabrication factory. The result of this study is proved by simulation that the suitable design of modular fabrication factory can extend into multi product manufacturing environment, and retain the intrinsic advantages of modular fabrication factory.

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45

Karim, Yunan. "The impact of alternative cell locations and alternative routes of material handling equipment in the design of cellular manufacturing systems." Thesis, 1999. http://hdl.handle.net/1957/33425.

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Cellular Manufacturing Systems (CMS) have claimed many advantages over traditional job shop processes. Some of the advantages reported by several users of CMS are reduction in throughput time, reduction in WIP inventory, improvement in product quality, faster response time to customer orders, shorter move distances, increase in manufacturing flexibility, and greater job satisfaction. In its implementation, CMS organizes a production floor into manufacturing cells. Hence, the important issue that needs to be addressed first is the cell formation (CF) problem. CF deals with the identification of part families, machine groups, and allocation of part families and machine groups to cells or vice versa. In the past, most studies in CF have assumed that the location of a cell is known a priori and a unique route exists between two cells. However, in an actual manufacturing environment, alternative locations are available for locating each cell. Similarly, when the capacity of the material handler being used is limited, alternative routes may have to be used to move part loads between two cells. In this research, the issues dealing with alternative cell locations and alternative routes of material handling equipment are investigated. In addition, several other important factors common to CF are also considered. These include machine capacity limitations, batches of part demands, non-consecutive operations of parts, and maximum number of machines assigned to a cell. A mathematical model is first formulated to represent the research problem. The model is a binary and general integer non-linear programming model, and it belongs to the class of NP-hard problem. Therefore, a higher level heuristic algorithm, based on the concept known as tabu search, is developed to efficiently solve the problems with industry merit. Incorporating the features associated with the tabu search, resulted in developing six different versions of the heuristic solution algorithm. The six heuristics are tested on twenty small problems, and the quality of their solutions is evaluated by investing significant effort to find their optimal solutions. The evaluation shows that the heuristics are highly effective. The solutions obtained from the heuristics have average percentage deviation of less than 3% from the optimal solutions. The heuristics are also tested on their performances with medium and large problems. By using a statistical experiment that is based on randomized block design, the performance of the six heuristics is compared. Three different problem structures, ranging from 4 parts to 30 parts and from 3 locations to 9 locations are used in the experimentation. The experiment reveals that in general, the tabu search based-heuristic using fixed tabu list size and long-term memory based on minimal frequency strategy is preferred to other heuristics as the problem size increases.
Graduation date: 2000

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46

Chang, Ting-Jiun, and 張婷珺. "The Design and Analysis of Segmented Dual-track Bidirectional Loop Automated Material Handling Systems in 300mm Wafer Fab." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/35440358225495903504.

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碩士
國立成功大學
製造工程研究所碩博士班
94
With the increase in the size and weight of 300mm wafers, the factory area also enlarged. Due to the long-distance material flow, it has become necessary to eliminate the manual handling of the wafers, hence an automated material handling system (AMHS) is a must for a 300mm manufacturing facility. It is a valuable issue to design an AMHS not only capable of meeting plenty and complex material handling requirement but also simplifying control and reducing capacity loss. This research proposes the segmented dual-track bidirectional loop (SDTBL) design for an AMHS. The configuration is based on a double-loop flowpath structre that is divided into non-overlapping segments, each containing certain number of vehicles operating in bidirectional mode. Transfer buffer is set to enable convert between segments and connect each independence zones. This structure elimates congestion and blocking without additional investment by operating vechicles on mutually exclusive tracks. The segmentation strategy and steps under two scenarios are developed in this paper, and a simulation model is constructed to evaluate the performace of each segmented cases.

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47

Yang, Ping-Chung, and 楊品中. "Intelligent Automated Material Handling System." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/8m2td7.

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碩士
國立虎尾科技大學
車輛工程系碩士班
103
In this paper, an intelligent automated material handling system (IAMHS) is developed for a textile mill in order to transfer yarn-spindles from conveyer to yarn-rack precisely. The prototype of proposed system consists of an automated guided vehicle (AGV) for approach control and a 5D XYZ table for spindle transferring. Furthermore, an Arduino series microprocessor is employed to perform the locating algorithm required for IAMHS and to manage the whole systems by the Zigbee(wireless communication protocol). The experimental results showed that the developed IAMHS can deliver the yarn spindles smoothly in variety of processing conditions by cooperating with several sensors. It also can lighten the load of the mill laborers and to avoid the occupational injuries dramatically.

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48

Jian, Zi-Yao, and 簡子堯. "Discrete Event Based Monorail Material Handling Simulation System." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/09485595840501337826.

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碩士
國立臺灣大學
工業工程學研究所
98
AMHS(Automated Material Handling System) is widely used for transporting materials in fab. However, most of simulation model is not precise enough in speed and location calculation and not efficient. In this research, we proposed a discrete event based mono rail material transport simulation system for more realistic simulation in AMHS. The system includes vehicles and tracks in AMHS. However, stockers and production machines are not included. In this thesis, we use the custom motion frame to plan acceleration and deceleration for vehicles. With collision preventing algorithm, distance between vehicles are kept, and vehicle can prevent collision as a result. By using the motion frame planning technique, the discrete event is simulation system is reduced to New Delivery Request and Vehicle Exiting Track. With the reduced discrete event, the simulation system works more efficient. The animation event is also provided for animated simulation. User can verify simulation by watching process with animation. To make the track layout more realistic, 3-degree Bezier curves is used to simulate curved tracks in system .To fully simulate to collision prevention procedure, motion frame and junction are proposed. When multiple vehicle try to enter same junction, first come first served policy is used to prevent collision. Also, when multiple vehicles are moving on same track, distance should be kept to prevent collision. Since the machine and stocker is excluded in this model, New Delivery Request event is used to simulate delivery request generated by machine and stocker. Two custom track layouts are designed to find best number of vehicle. The performance index is also provided as the vehicle number changed.

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49

Yang, Chun-Mei, and 楊純美. "A Dynamic Scheduling System with Automated Material Handling." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/10214781585587696227.

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碩士
逢甲大學
工業工程與系統管理學研究所
96
In practical scheduling environment, customer orders arrive one after one as time goes by. It is required to integrate the new coming order into the shop schedule with the scheduled jobs. Thus, a dynamical scheduling problem has been evolved. Static scheduling problem has not satisfied with various types of practical production environment, only develop dynamical of reasonable scheduling, It is can solved scheduling problem under dynamical environment. Job shop scheduling is the most complicated scheduling problem among practical environment. Researchers have used approximation approach such as GA, Tabu search to solve job-shop problems. Ant colony approach proposed by Dorigo in 1992 has been applied to various scheduling problems and has also obtained impressive results. This research will bring up a instance of job shop production environment, a study of development an ant-colony approach in dynamic scheduling problem. In the past researches of dynamic scheduling, it is not so much dynamic scheduling research considered with non-operation time problem. However, the non-operation time (handling time, waiting time etc.) caused bad practical performance, scheduling tardiness etc. appeared. Thus, a simulation platform for simulating scheduling has been constructed. It is compared with Ant colony approach and conventional dispatching rule approach with handling problem. Expect the simulation result can get better performance both in makespan and average flow time

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50

Hsieh, Kuo-Tung, and 謝國棟. "Simulation of Automatic Material Handling System in a Flexible Manufacturing System." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/55579842638220631324.

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碩士
國立成功大學
工程科學系專班
96
Taiwan has no mineral resources of crude oil, all the variety of manufacturing industries constitute the country's major economic lifeline. We can say that all of the small-to-medium enterprises create a Taiwan economic miracle, laying out the Newly Industrial Economics in Asia. In recent years, a large number of relocation happen to industrial; mainland China has become the factory of the globe. With the rising awareness of labour right and the government‘s strictness in environmental protection in Taiwan, all kinds of enterprises have faced severe challenges. Only by promoting downstream supply chain vertical integration, improving the manufacture process, and demanding high quality cost control, can enterprises pursuit higher profits and face various challenges to demonstrate competitive advantages. This study investigates and uses a simulation logistics software, the flexsim, to solve problems arise from construction or expansion projects for automated manufacturing plant, such as to use single-direction or bi-direction conveyor to transport equipment, how many vehicles are required in a circular track to yield maximum handling capacity and what are the advantages by using dual crane instead of single crane in transport capacity of an Automatic Storage system. Using an off-the-shelf simulation software can have advantages in avoiding the cost of expensive hardware equipments in experiments for forecasting the lowest cost solutions and assuring future production operations, which is for sure making an enterprises overall cost down.

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