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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.
121

Sol-gel encapsulation of heterocyclic ligands for aqueous sensing applications

Johnson, Andrea January 1996 (has links)
No description available.
122

The self-validating process actuator

Alsop, Peter January 1995 (has links)
No description available.
123

Synthesis and characterisation of glass electrolytes for sensing bismuth and antimony in non ferrous metals

Cohen, Sally Elizabeth January 2003 (has links)
No description available.
124

Monomode fibre optic interferometric sensors

Akhavan Leilabady, P. January 1987 (has links)
No description available.
125

Optical and related methods of chemical sensing using substituted phthalocyanines

Smith, Ann M. January 1996 (has links)
No description available.
126

NO←x gas sensors

Rigby, Geraldine Patricia January 1992 (has links)
No description available.
127

Metal oxide single crystals as gas sensors

Steele, J. M. January 1988 (has links)
No description available.
128

Identification of the low temperature combustion products from coal and a study of their effect on metal oxide semiconductors

Gibson, S. January 1988 (has links)
No description available.
129

Photo and redox active anion receptors based on transition metal bipyridyl ligands

Dent, Simon William January 1997 (has links)
No description available.
130

A high speed scanning system for vision based navigation/control of mobile robots

Rubtsov, Vasily January 1998 (has links)
One of the main problems in the design of mobile robots is the development of creating smart integrated information systems. These systems may include different type of sensors. Usually a CeD vision system is a necessary part for these systems. This thesis considers the design of a fast mechanical scanning system for a CCD vision system and the synthesis of the optimal control for this system. The mathematical model of the transport subsystem for mobile robots subjected to an external disturbance is created. The correctness of this model is proved on the base of simulation and experimental results. Regression coefficients are calculated and an estimate of model accuracy is carried out. The approach of power calculation for the actuators for the fast mechanical scanning system is considered. Implementation of this approach extends the use of a general mathematical model of the transport subsystem of the mobile robot and as such considerably reduces the design time. The main features for estimation of external disturbances are determined. Limitations of implementation of some technical solutions for mobile robot sensors are defined according to an analysis conducted of different factors for external disturbances. Di~erent kinematic schemes of the scanning systems have been analysed in this thesis. Practical recommendations of the kinematic scheme used in scanning systems are given. The essential features of a kinematic scheme for the fast mechanical scanning system have been developed and verified. A method for the solution of the inverse kinematics of a 3 degree of freedom scanning system in terms of velocities and in accelerations is presented. This method is utilised for formulating optimal control for the fast mechanical scanning system. 11 v ASlLY RUBrsov PHD· THESIS The algorithms of fast scanning have been produced for the different types of the sensors. The limitations for the practical realisations for these algorithms are considered in this thesis. The optimal control algorithms for the developed scanning system are produced. This control minimises the sum of instant powers of the scanning system actuators. A practical algorithm has been derived utilising the control scheme structure developed theoretically. The capability of this control algorithm has been proved by experimental study. Advantages of this developed control algorithm for 3 degree scanning system has been proven by experimentation.

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