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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Investigation of RFID-enabled walking-worker assembly islands with fixed-position layouts

Cao, Nan, 曹楠 January 2012 (has links)
This research investigates a metallurgy manufacturer whose products are assembled on fixed position assembly islands. The products of collaborating company are characterized by large-scale with high complexity and mass customization. With such configuration, a product is always set on one location throughout its whole assembly cycle. Assembly materials, machines and operators can be continuity sent to one location to reduce damage or movement cost. To understand the production challenges of a real-life enterprise, this research investigates production procedures of the collaborating enterprise on planning, scheduling, logistics and assembly. The management challenges of assembly method with fixed-position layout are summarized as: (1) High dynamic of material, tools and operator movement. (2) The movement of operators, assembly machines maybe expensive. (3) The requirements of assembly operators are too high to find suitable operators with low cost. The cause of current production problems of the collaborating enterprise are summarized as: (1) lack of appropriate real-time operation data capturing and collection methods (2) current visibility and traceability functions at shop floor is wasteful, time consuming and inaccuracy (3) production data can hardly be synchronized between different production unites, e.g. assembly island buffers and stock areas. Hence RFID technology is applied to solve the problems. The creation of RFID-enable assembly environment is following the AUTOM RFID implementation solutions. The methodology of deployment RFID hardware facilities and the functions of choosing production object to tag RFID tags, finding value-adding points to deploy RFID readers and building networks to integrate the RFID hardware facilities are introduced. Decision support system is developed to connect and transfer information between shop-floor execution and decision. This system guides executions and collects real-time information involved in execution procedures and converts the information as reference for decision makers. This system can also release shop-floor decisions instantly to operators. Four core components including Explorers, Modules, Services and Data repository compose the framework. These four components interrelates to each other to guarantee the smooth shop-floor information transformation. Finally, a case study demonstrates the RFID solution has been successfully deployed in proof-of-concept shop floor of the collaborating enterprise. The decision support system can proper manage the captured real-time information and convert the information into useful reference data for decision makers. As the operation processes of this case is designed strictly following the real-life operation processes, therefore this RFID solution is capable to be applied in real-life shop floor to assist the enterprise operation and management. / published_or_final_version / Industrial and Manufacturing Systems Engineering / Master / Master of Philosophy
42

Assembly redesign for layered manufacturing: an algorithmic approach

Wu, Jian, 吳健 January 2004 (has links)
published_or_final_version / abstract / toc / Mechanical Engineering / Doctoral / Doctor of Philosophy
43

Strategic level assessment of the benefit of reductions in equipment conversion times

Lillo, Nancy L. 12 1900 (has links)
No description available.
44

Performance enhancements in tandem queueing networks and confidence interval estimation in steady-state simulations

Argon, Nilay Tanık 12 1900 (has links)
No description available.
45

CAD methods to support automated De- and remanufacture assessments

Harper, Brian Davidson 12 1900 (has links)
No description available.
46

Control of robotic fixtureless assembly /

Yuen, Ka Ming. January 1998 (has links)
Thesis ( Ph.D.) -- McMaster University, 1998. / Includes bibliographical references (leaves 169-172). Also available via World Wide Web.
47

Design of dynamic cellular manufacturing systems /

Bajic, Mirko M. January 2001 (has links) (PDF)
Thesis (Ph.D.)--University of Adelaide, Dept. of Mechanical Engineering, 2001? / Bibliography: leaves 172-184.
48

Sensing for automated assembly : direct calibration techniques for determining part-in-hand location /

Pohlhammer, Christopher M. January 1997 (has links)
Thesis (Ph. D.)--University of Washington, 1997. / Includes bibliographical references (leaves [164]-169).
49

Methode zur roboterbasierten förderbandsynchronen Fliessmontage am Beispiel der Automobilindustrie /

Werner, Jochen, January 1900 (has links)
Thesis / Includes bibliographical references (p. 145-162).
50

Efficiency and production rate of a transfer line with two machines and a finite storage buffer

January 1979 (has links)
by Oded Berman. / Bibliography: leaves 29-31. / Research supported by National Science Foundation Grants NSF/RANN APR76-12036 and NSF DAR78-17826.

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