Global ETD Search

1	Model studies on the design and operation of the longwall shearer loader Shaw, I. R. January 1976 (has links) No description available. 622 Coal cutting machinery design
2	Scale up factors in the design of a hydraulic starch mill Ko, Yung-Ling January 2011 (has links) Digitized by Kansas State University Libraries Grain--Milling
3	Experimental investigation for designing passive fences to orient parts by pushing Lam, King-fung., 林敬豐. January 2009 (has links) published_or_final_version / Mechanical Engineering / Master / Master of Philosophy Conveyor belts.
4	Maneuverable penetration system for horizontal exploration in soft ground. Katz, Alan William January 1975 (has links) Thesis. 1975. M.S.--Massachusetts Institute of Technology. Dept. of Civil Engineering. / Bibliography: leaves 175-179. / M.S. Civil and Environmental Engineering Boring machinery Design and construction
5	Prototype combine for grain harvesting based on internal pneumatic transfer / by Ian Gilbert Ridgway. Ridgway, Ian G. January 2002 (has links) "July 2002" / Bibliography: leaves 82-83. / xv, 192 leaves : ill., plates ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / The aim of this project was to build a combine harvester with a reduced number of components, a maximum of five moving parts, which could reap most if not all crops from ground level upwards and be self-cleaning. / Thesis (M.App.Sc.)--University of Adelaide, Dept. of Agronomy and Farming Systems, 2002 Combines (Agricultural machinery)
6	Fault signature detection for rolling element bearings in electric machines Stack, Jason R. 12 1900 (has links) No description available. Electric machinery Vibration
7	Analytical and experimental investigation of an efficient viscous pump Mainland, Marlene Elise 08 1900 (has links) No description available. Pumping machinery
8	Design of assembly machine for fine-pitch surface mount components Shartouny, Michael 05 1900 (has links) No description available. Mechanical movements
9	Drie-dimensionele magnetiese laer vir rotors met hoë rotasiesnelhede Pretorius, Jan Harm Christiaan 14 May 2014 (has links) M.Ing. (Electrical & Electronic Engineering) / Please refer to full text to view abstract Rotors Magnetic suspension
10	A photovoltaic-powered pumping system Liu, Guang January 1989 (has links) This thesis studies the optimal design for a photovoltaic-powered medium-head (30 meters) water pumping system, with the emphasis on improving the efficiency and reducing the maintenance requirements of the electrical subsystem. The reduction of maintenance requirements is realized by replacing the conventional brush-type permanent magnet dc motor with a brushless dc (BLDC) motor. Different BLDC motor control techniques such as position-sensorless operation, sinusoidal and trapezoidal excitations are investigated. The improvement in efficiency is achieved by maximizing the output power from the photovoltaic array and by minimizing the losses in various parts of the electrical sub-system. A microprocessor-based double-loop maximum power tracking scheme is developed for maximization of the photovoltaic array output power. Over 99% utilization factor is achieved for a typical clear day regardless of the season of the year. The system losses are minimized mainly by performing loss analysis and selecting most suitable switching topologies and switching components. Experimental results show that the combined converter-motor efficiency is comparable to those of high-efficiency brush-type dc motor systems. / Applied Science, Faculty of / Electrical and Computer Engineering, Department of / Graduate Photovoltaic power generation

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