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Full-Text Articles in Science and Technology Studies

Design And Development Of A Novel Displacement Differential Self-Induced Magnetorheological Damper, Guoliang Hu, Yi Ru, Weihua Li Jan 2014

Design And Development Of A Novel Displacement Differential Self-Induced Magnetorheological Damper, Guoliang Hu, Yi Ru, Weihua Li

Faculty of Engineering and Information Sciences - Papers: Part A

This article presents the development of a novel magnetorheological damper which has a self-sensing ability. In this study, a linear variable differential sensor, which was based on the electromagnetic induction mechanism, was integrated with a conventional magnetorheological damper. The working principle, configuration, and prototype of the displacement differential self-induced magnetorheological damper based on the integrated linear variable differential sensor technology were presented. A mathematical model of the proposed displacement differential self-induced magnetorheological damper was established. The finite element model was built with two-dimensional Maxwell software and the magnetic simulations were presented. With this approach, the influence of the flux leakage, …


Displacement Profile Estimation Using Low Cost Inertial Motion Sensors With Applications To Sporting And Rehabilitation Exercises, James Coyte, David A. Stirling, Montserrat Ros, Haiping Du, Andrew Gray Jan 2013

Displacement Profile Estimation Using Low Cost Inertial Motion Sensors With Applications To Sporting And Rehabilitation Exercises, James Coyte, David A. Stirling, Montserrat Ros, Haiping Du, Andrew Gray

Faculty of Engineering and Information Sciences - Papers: Part A

This paper investigates two methods of displacement estimation using sampled acceleration and orientation data from a 6 degrees of freedom (DOF) Inertial Measurement Unit (IMU), with the application to sporting training and rehabilitation. Currently, the use of low cost IMUs for this particular application is very impractical due to the accumulation of errors from various sources. Previous studies and projects that have applied IMUs to similar applications have used a lower number of DOF, or have used higher accuracy navigational grade IMUs. Solutions to the acceleration noise accumulation and gyroscope angle error problem are proposed in this paper. A zero …


Parameter Identification Study Of Frequency Response Data For A Trilayer Conjugated Polymer Actuator Displacement Model, Emmanuel D. Blanchard, Mitchell J. Smith, Chuc H. Nguyen Jan 2013

Parameter Identification Study Of Frequency Response Data For A Trilayer Conjugated Polymer Actuator Displacement Model, Emmanuel D. Blanchard, Mitchell J. Smith, Chuc H. Nguyen

Faculty of Engineering and Information Sciences - Papers: Part A

This article investigates the effect of three uncertain parameters on a model of conjugated polymer actuators. These uncertain parameters are the diffusion coefficient (D), the resistance (R), and the double-layer WKLFNQHVV / 7KH PRGHO VHQVLWLvity to these parameters is analyzed and a parameter estimation study is performed using artificially generated data as well as laboratory yielded experimental measurements. The parameter estimation method used in this article is based on a Bayesian cost function, and gives us an insight on how much the estimation can be trusted, which is useful information for the design of controllers. Results indicate that for stochastic …


Quantitative Assessment Of Landslide Frequency Versus Magnitude Of Displacement, P N. Flentje, R N. Chowdhury, Anthony Miner, C Mazengarb Jan 2012

Quantitative Assessment Of Landslide Frequency Versus Magnitude Of Displacement, P N. Flentje, R N. Chowdhury, Anthony Miner, C Mazengarb

Faculty of Engineering and Information Sciences - Papers: Part A

Understanding landslide frequency is an important challenge in the process of the assessment of landslide risk. Importantly, from the perspective of landslide risk management today, this paper investigates the relationship between 'how often will a landslide move' and 'how far will it move when it does move'. Such relationships must reflect the continuum between the lower frequency 'catastrophic' type failures and the much higher frequency millimeter type magnitudes of displacement; and intervals along this continuum will likely have different management significance. So, when considering the frequency of landslide move-ment, the full question must be 'what is the frequency of a …


China In Context: Energy, Water, And Climate Cooperation, Prof. Elizabeth Burleson Jan 2010

China In Context: Energy, Water, And Climate Cooperation, Prof. Elizabeth Burleson

Prof. Elizabeth Burleson

Climate resilient communities can be achieved with the support of global research, development, deployment, and diffusion of environmentally sound low GHG emission technologies and processes. Technology cooperation should lower emissions remaining mindful of biodiversity, ecosystem services and livelihoods. China and the United States need to respond effectively to both economic and climate crises and can do so in part by cooperating on environmentally sound technology that transforms the global use of energy.


Influence Of In-Plane Displacement And Double-Aperture Orientation On Slope Fringe Formation In Double-Shearing-Aperture Speckle Interferometry, K F. Wang, A Kiet Tieu, Enbang Li Jan 2000

Influence Of In-Plane Displacement And Double-Aperture Orientation On Slope Fringe Formation In Double-Shearing-Aperture Speckle Interferometry, K F. Wang, A Kiet Tieu, Enbang Li

Faculty of Engineering and Information Sciences - Papers: Part A

The influence of the in-plane displacement and double-aperture orientation on the slope fringe formation in double-shearing-aperture speckle interferometry is discussed in detail. The research results show that the two in-plane displacement components, one parallel to and the other perpendicular to the shearing direction, have an influence on the slope fringe formation and that the double-aperture orientation also has an important influence on the slope fringe formation. A theoretical analysis and experimental results are presented. The experimental results are in good agreement with the theoretical analysis.


Rising Temperatures: Rising Tides, Prof. Elizabeth Burleson Jan 1996

Rising Temperatures: Rising Tides, Prof. Elizabeth Burleson

Prof. Elizabeth Burleson

Transboundary environmental problems do not distinguish between political boundaries. Global warming is expected to cause thermal expansion of water and melt glaciers. Both are predicted to lead to a rise in sea level. We must enlarge our paradigms to encompass a global reality and reliance upon global participation.