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Browsing 09 Engineering by Author "NA"

Now showing items 1-20 of 113

A 1-DOF Assistive exoskeleton with virtual negative damping: Effects on the kinematic response of the lower limbs

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

We propose a novel control method for lowerlimb assist that produces a virtual modification of the mechanical impedance of the human limbs. This effect is accomplished through the use of an exoskeleton that displays active ...
2-D Two-Fold Symmetric Circular Shaped Filter Design With Homomorphic Processing Application

Seneviratne A; Kha H; Hoang Tuan; Nguyen Tuan (IEEE, 2010)

A design method of a linear-phased, two-dimensional (2-D), two-fold symmetric circular shaped filter is presented in this paper. Although the proposed method designs a non-separable filter, its implementation has linear ...
Affine Precoding And Decoding Mimo Frequency-Selective Fading Channel For Estimation And Source Detection

Tran N; Pham Duong; Hoang Tuan (IEEE, 2006)

A new affine precoding and decoding method for multiple-input multiple-output (MIMO) frequency-selective fading channel is proposed. Based on a concept of orthogonal superimposed training on linear precoding, the optimal ...
Air-conditioning employing indirect evaporative cooling can be shown to derive its energy from the solar source

Dartnall William; Revel A; Giotis V (ASME, 2009)

This paper explains how Indirect Evaporative Cooling (IEC) uses water as a refrigerant. This water refrigerant may be seen as part of the rain cycle, whereby the environment (not a heat pump) returns water as the refrigerant ...
Analog Flat Filter Design

Hoang Hung; Hoang Tuan; Nguyen Tuan (IEEE, 2009)

This paper proposes a systematic approach for the design of a general class of analog infinite-impulse-response (IIR) filters, which includes all well-known classical analog filters as a special case. All specifications ...
Analysis of one step delay in direct torque control of permanent magnet synchronous motor and its remedies

Zhang Yun; Zhu Jianguo; Xu Wei (IEEE, 2010)

One-step delay in digital implementation of direct torque controlled (DTC) AC motor drives leads to large torque ripple and low switching frequency. Two remedies are proposed in this paper to eliminate the one-step delay. ...
Analytical nonlinear model for permanent magnet synchronous machine incorporating saturation saliencies

Wang Yi; Zhu Jianguo; Wang Shuhong; Guo Youguang; Li Yongjian; Xu Wei (IEEE, 2010)

This paper investigates the nonlinear model of the permanent magnet synchronous machines (PMSMs). In order to incorporate the structural and saturation saliencies, two parameters are defined to indicate the saturation ...
An approach to risk events analysis for ERM using AHP and cluster analysis

Pornprasitpol Pornwan; Ye Dan; Sun Ming-Bo (IEEE, 2010)

An increase in enterprise's operational risk concerns a broader range of corporate stakeholders. Therefore, there is a need for integrated Enterprise Risk Management (ERM) system, in order to keep the enterprise competitive. ...
Assessing a potential electroencephalography based algorithm during a monotonous train driving task in train drivers

Jap Budi Thomas; Fischer Peter; Lal Saroj (IEEE, 2011)

Electroencephalography can be utilized to detect driver fatigue. One algorithm that shows promising results in detecting fatigue is the equation ((?+a)/ß). The current study observes the result of equation ((?+a)/ß) on 10 ...
Attitude Estimation for Dynamic Legged Locomotion Using Range and Inertial Sensors

Singh Surya; Waldron Kenneth (IEEE, 2005)

Legged robots offer exceptional mobility in uncharted terrains. Their dynamic nature yields unrivaled mobility, but serves to destabilize the motion estimation process that underlies legged operations. In particular, the ...
Brief overview of technology and applications in railway operator safety

Lal Saroj; Lal Shailendra; Fisher P; Penzel Thomas; Agbinya Johnson (IEEE Xplore, 2011)

Technology used to develop safety measures and driver interactive systems is crucial in the railway environment. It is important to understand train driver risk factors which can be detrimental to driver and passenger ...
Channel estimation for amplify-and-forward relaying with spatially correlated antennas

Nguyen Tran; Nguyen Ha; Hoang Tuan; Dodds David (IEEE, 2011)

This paper proposes an optimal training design for an amplify-and-forward (AF) relay system in which the source, relay and destination are all equipped with multiple antennas. Examined is the scenario when spatial correlation ...
Characterisation of advanced drive system for hybrid electric vehicles

Xu Wei; Zhu Jianguo; Zhang Yun; Wang Yi; Sun Guo Chao (IEEE, 2010)

The electric drive is a key component in a plug-in hybrid electric vehicle (PHEV). The ideal tendency is to use the electric machine over the entire torque/speed range. This paper presents the characterization of the ...
Closed Form PHD Filtering For Linear Jump Markov Models

Pasha Syed; Vo Ba-Ngu; Hoang Tuan; Ma Wing-Kin (IEEE, 2006)

In recent years there has been much interest in the probability hypothesis density (PHD) filtering approach, an attractive alternative to tracking unknown numbers of targets and their states in the presence of data association ...
Coat Thickness in Wire-coating process with corrugated die

Huynh Ba (ASME - American Society of Mechanical Engineers, 2002)
Cogging torque reduction for radially laminated flux-switching permanent magnet machine with 12/14 poles

Xu Wei; Zhu Jianguo; Zhang Yongchang; Hu Jiefeng (IEEE, 2011)

Flux-switching permanent-magnet machine (FSPMM) offers high torque density, impressive flux weakening capability and mechanical ruggedness because of its distinctive configuration, and is potentially suitable for the ...
Comparing accuracy of two algorithms for detecting driver drowsiness - Single source (EEG) and hybrid (EEG and body movement)

Pritchett Stacey; Zilberg Eugene; Zheng Ming; Karrar Murad; Smith David; Lal Saroj (IEEE Xplore, 2011)

Driver fatigue is acknowledged to have similar effects on driving performance as driving under the influence of alcohol. As such, drowsiness detection systems should prove to be valuable in-vehicle safety measures. There ...
Complex Natural Resonances for Breast Tissues with Complex Morphology

Yang Fan; Sanagavarapu Ananda (IEEE, 2011)

We investigate the Complex Natural Resonances (CNRs) of the malignant breast tissues with complex peripheries. The tissues are modeled as lossy dielectric objects with complex geometries which are expected to have different ...
Control Design for Interconnected Power Systems with OLTCs via Robust Decentralized Control

Pota H.; Athanasius G.; Ugrinovskii Valery; Li Li (IEEE, 2006)

This paper addresses the problem of designing a decentralized control of interconnected power systems, with OLTC and SVCs, under large changes in real and reactive loads that cause large structural changes in the system ...
Control Modes for a Three-Dimensional Galloping Machine

Waldron Kenneth; Kallem Vinutha (ASME, 2004)

A set of relationships are developed to estimate the effects of control inputs on different axes of a galloping machine. It is demonstrated that control must be approached on a stride cycle basis to avoid serious cross-coupling ...

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Browsing 09 Engineering by Author "NA"

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Browsing 09 Engineering by Author "NA"