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Browsing 09 Engineering by Title

Now showing items 21-40 of 2363

Active-Impedance Control of a Lower-Limb Assistive Exoskeleton

Aguirre-Ollinger Gabriel; Colgate James; Peshkin Michael; Goswami A (IEEE, 2007)

We propose a novel control method for lower-limb assist that produces a virtual modification of the mechanical impedance of the human limbs. This effect is accomplished by making the exoskeleton display active impedance ...
Active/Robust Control of Longitudinal Vibration Response of Floating-type Cable-stayed Bridge Induced by Train Braking and Vertical Moving Loads

Liu Jia; Qu Weilian; Pi Yong Lin (Sage Publications Ltd, 2010)

The active/robust control of the longitudinal vibration response of the deck of floating-type cablestayed bridges induced by train braking and vertical moving loads has been investigated in this paper. Controlled objects ...
Active Seismic response control of tall buildings based on reduced order model

Boffa John; Du Haiping; Zhang Nong (The Institute of Electrical and Electronic Engineers Inc (IEEE), 2006)

This paper applies the dynamic model reduction method to obtain a reduced order model of an experimental tall building which has twenty floors and is 2.5m high. The experimental model is designed to imitate a real tall ...
Active SLAM for structured environments

Leung Cindy; Dissanayake Gamini; Huang Shoudong (IEEE, 2008)

This paper considers the trajectory planning problem for line-feature based SLAM in structured indoor environments. The robot poses and line features are estimated using smooth and mapping (SAM) which is found to provide ...
Active structural control using dymanic output feedback sliding mode

Ha Quang; Li Jianchun; Hong Guang; Samali Bijan (ARAA (Australian Robotics & Automation Association), 2001)

This paper presents a dynamic output feedback control approach to active control of civil engineering structures. The design is based on sliding mode control, pole placement of the closed-loop eigenvalues, and linear ...
Active Vibration Control of Structures Subject to Parameter Uncertainties and Actuator Delay

Du Haiping; Zhang Nong (SAGE PUBLICATIONS LTD, 2008)

This article presents a robust H{infty} controller design approach for active vibration attenuation of structures considering parameter uncertainties and time delay in control input. The parameter uncertainties dealt with ...
Adaptations of Proportional Fair Algorithm for Packet Scheduling in LTE-Advanced

Nguyen Sinh; Sandrasegaran Kumbesan (IEEE, 2010)

3GPP has proposed LTE-Advanced as its 4G technology with many new features supplementing the current LTE technology. These new techniques lead to the demand of new Packet Scheduling Algorithms to distribute packets optimally ...
Adaptive and Robust Channel Estimation for Pilot-aided OFDM Systems

Xu, Jiadong.; Strohmer, Thomas. (2007-03-12)

A time domain interpolation method is presented and applied to channel estimation for pilot-aided Orthogonal Frequency Division Multiplexing (OFDM) system. One key advantage of this method is that it dynamically selects ...
Adaptive control design for nonlinearly parameterized systems with a triangular structure

Yokoi Kiyoshi; Hung N V; Hoang Tuan; Hosoe Shigeyuki (Chinese Automatic Control Soc, 2007)

A novel adaptive backstepping design for a class of nonlinearly parameterized systems with a triangular structure is proposed. Under the Lipschitz condition with respect to unknown parameters of the system, an effective ...
Adaptive control for nonlinearly parameterized uncertainties in robot manipulators

Hung N V; Hoang Tuan; Narikiyo T; Apkarian Pierre (IEEE-Inst Electrical Electronics Engineers Inc, 2008)

In this brief, a new adaptive control framework to compensate for uncertain nonlinear parameters in robot manipulators is developed. The designed adaptive controllers possess a linear parameter structure, guarantee global ...
Adaptive EEG thought pattern classifier for advanced wheelchair control

Craig Daniel; Nguyen Hung (The Institute of Electrical and Electronic Engineers Inc (IEEE), 2007)

This paper presents a real-time Electroencephalogram (EEG) classification system, with the goal of enhancing the control of a head-movement controlled power wheelchair for patients with chronic Spinal Cord Injury (SCI). ...
An Adaptive Manoeuvring Strategy for Mobile Robots in Cluttered Dynamic Environments

Valls Miro Jaime; Taha Tarek; Wang Dalong; Dissanayake Gamini (Indescience Publishers, 2008)

A novel method which combines an optimised global path planner with a real-time sensor-based collision avoidance mechanism to accommodate for dynamic changes in the environment (e.g., people) is presented. The basic concept ...
An Adaptive Power and Bit Allocation Algorithm for Multiple User MIMO OFDM System Employing Zero-Forcing Multi-user Detection

Uthansakul, Peerapong.; Bialkowski, Marek E. (2007-03-12)

This paper describes an adaptive algorithm for power and bit allocations in a multiple user Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing (MIMO OFDM) system operating in a frequency selective ...
Adaptive shared control strategies based on the Bayesian recursive technique for an intelligent wheelchair

Trieu Tuyen; Willey Keith; Nguyen Hung (IEEE, 2009)

In this paper we present an adaptive shared control method for an intelligent wheelchair based on the Bayesian recursive technique to assist a disable user in performing obstacle avoidance tasks. Three autonomous tasks ...
Adaptive sliding mode control for civil structure using magnetorheological dampers

Kwok Ngai Ming; Ha Quang; Nguyen Thanh; Li Jianchun; Samali Bijan (Japan Robot Association, 2006)

An adaptive sliding mode controller for vibration control is proposed in this paper for structures embedded with magnetorheological (MR) dampers. Civil structures and buildings are liable to damages during earthquake ...
An adaptive tunable dynamic absorber using magnetorheological elastomers for vehicle powertrain transient vibration control over a frequency range

Hoang Nga; Zhang Nong; Du Haiping (Cultural & Communication Publisher, 2009)

This paper presents a concept design of Adaptive Tuned Vibration Absorber (ATVA) using a magnetorheological elastomer (MRE) for powertrain transient vibration reduction over a frequency range. The MRE material used to ...
An adaptive tunable vibration absorber using a new magnetorheological elastomer for vehicular powertrain transient vibration reduction

Hoang Nga; Zhang Nong; Du Haiping (Institute of Physics Publishing Ltd., 2011)

During the transient stage of acceleration, the powertrain experiences a period of high level vibration because the engine speed passes through one or several powertrain natural frequencies. This paper presents a concept ...
Adaptive Web Navigation Construction: A Machine Learning Approach

Kong Xiaoying; Gu Y; Lowe David (Electronic Commerce Research Unit ECRU, 2006)

Support for effective stakeholder interaction with an organization's web site has increasingly played a critical role in business success. An important factor in this effective web interaction is the ease with which a ...
Additive resonances of a controlled van der Pol-Duffing oscillator

Ji Jin; Zhang Nong (Academic Press, 2008)

The trivial equilibrium of a controlled van der Pol¿Duffing oscillator with nonlinear feedback control may lose its stability via a non-resonant interaction of two Hopf bifurcations when two critical time delays corresponding ...
Adhesion of sol-gel derived hydroxyapatite nanocoatings on anodised pure titanium and titanium (Ti6Al4V) alloy substrates

Roest Richard; Latella Bruno; Heness Gregory; Ben-Nissan Besim (Elsevier, 2011)

The mechanical properties and adhesion behaviour of sol-gel derived hydroxyapatite (HA) nanocoatings on commercially pure (cp) titanium (Ti) and Ti6Al4V alloy have been determined and related to anodising treatment. The ...

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