• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 1352
  • 371
  • 248
  • 199
  • 149
  • 110
  • 83
  • 78
  • 56
  • 56
  • 30
  • 29
  • 19
  • 14
  • 11
  • Tagged with
  • 3282
  • 289
  • 279
  • 271
  • 256
  • 231
  • 197
  • 174
  • 171
  • 170
  • 166
  • 159
  • 157
  • 149
  • 143
  • 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.
21

The Foundation for CADSPAM: Computer Aided Design of SPAtial Mechanisms

Doyle, Matthew Edward 17 December 1997 (has links)
This thesis presents the foundation of a computer program for the unified design of spatial mechanisms. The program will be capable of synthesizing any mechanism that can be described using an equivalent chain containing only revolute and prismatic joints. The supporting analysis routine will be general and will be able to analyze any lower pair mechanism using the iterative approach developed by Sheth and Uicker [1972]. Unlike precision point synthesis methods that allow only a limited number of positions to be specified, optimization will be employed to synthesize a wide variety of mechanisms. This approach will allow the user to interactively monitor and control objectives and constraints, which will yield practical solutions to realistic mechanism design problems. The creation of this program will provide practicing engineers with the capacity to design many previously intractable spatial mechanisms. / Master of Science
22

Design and control of a robotic manipulator with an active pneumatic balancing system /

Lee, Kam-fat, Jonathan. January 1992 (has links)
Thesis (M. Phil.)--University of Hong Kong, 1992.
23

Control of modular robotic fingers toward dexterous manipulation with sliding contacts

Grier, Michael Anthony, 1956- January 1989 (has links)
Control and other issues related to the use of modular robotic fingers to perform dexterous manipulation are considered. The specific manipulation strategy to be implemented, which focuses on parts acquisition and takes advantage of sliding contacts which exist between the fingers and the object being manipulated, is described. The results of early implementation efforts are discussed in which a standard individual-actuator PID control approach was used. Problems related to friction and other effects are identified which were encountered in these early efforts. A computed torque control scheme which provides adaptive friction compensation is proposed for future use with the fingers. Results are discussed of simulations performed to help determine if use with the fingers of this proposed approach will improve system tracking performance in the presence of a variety of disturbances like those which will affect the fingers during actual operation. Implications of results for future implementation efforts are discussed.
24

Experimental verification of a model of a two-link flexible, lightweight manipulator

Huggins, James D. 08 1900 (has links)
No description available.
25

On application of vision and manipulator with redunduncy to automatic locating and handling of objects

余永康, Yu, Wing-hong, William. January 1989 (has links)
published_or_final_version / Electrical and Electronic Engineering / Doctoral / Doctor of Philosophy
26

An assessment of the role of plant growth regulators and circadian rhythms in determining stomatal movement

Snaith, P. J. January 1984 (has links)
No description available.
27

Mechanosensitivity of the basolateral membrane of outer hair cells from the mammalian cochlea

Gale, Jonathan Edward January 1994 (has links)
No description available.
28

A crystallographic study of structural changes in L-lactate dehydrogenase induced by the binding substrate

Dunn, Cameron R. January 1989 (has links)
No description available.
29

A DECENTRALIZED ADAPTIVE CONTROL SCHEME FOR ROBOTIC MANIPULATORS.

Koenig, Mark A. January 1985 (has links)
No description available.
30

The origins of co-operativity in haemoglobin : An X-ray analysis of the liganded T state

Liddington, R. C. January 1986 (has links)
No description available.

Page generated in 0.0478 seconds