Eleventh International Conference on Road Transport Information and Control, 2002. (Conf. Publ. No. 486)

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Analysis of peak torque of line-operated synchronous machines subjected to symmetrical voltage sags
Eleventh International Conference on Road Transport Information and Control, 2002. (Conf. Publ. No. 486) - - Trang 480-485 - 2002
F. Carlsson, H.-P. Nee, C. Sadarangani
Voltage sags and voltage interruptions are serious power quality problems for many industries. Apart from eventual tripping, voltage sags cause high torque peaks, which may cause damage to the shaft or equipment connected to the shaft. This paper shows how the torque depends on both the duration and the magnitude of voltage sags. First a simple theory is presented, and then to verify the theory, s...... hiện toàn bộ
Neural Based Tabu Search method for solving unit commitment problem
Eleventh International Conference on Road Transport Information and Control, 2002. (Conf. Publ. No. 486) - - Trang 180-185 - 2002
C.C. Asir Rajan, M.R. Mohan, K. Manivannan
This paper presents a new approach to solve short-term unit commitment problem (UCP) using neural based tabu search (NBTS). The solution of the unit commitment problem is a complex optimization problem. The exact solution of the UCP can be obtained by a complete enumeration of all feasible combinations of generating units, which could be very huge number. The unit commitment has commonly been form...... hiện toàn bộ
Effects of external vehicle speed limiting and headway advice on motorway traffic
Eleventh International Conference on Road Transport Information and Control, 2002. (Conf. Publ. No. 486) - - Trang 146-150 - 2002
K. Wood, I. Fraser, A. Stevens
The Traffic Responsive Intelligent Speed and Headway Adaptation (TRISHA) project investigated the effects of the external application of limits to the performance of individual vehicles from the roadside. The limits considered were maximum speed and minimum headway based on real-time traffic flow information. The objective of such limits would be to promote smoother traffic flow and better control...... hiện toàn bộ
Journey time estimation using MIDAS loop data
Eleventh International Conference on Road Transport Information and Control, 2002. (Conf. Publ. No. 486) - - Trang 177-181 - 2002
N. Abou-Rahme, J. White, R. Stewart
MIDAS (Motorway Incident Detection and Automatic Signalling system) has been operational on a number of motorways as part of the Highways Agency's traffic management system. To verify the accuracy of the existing algorithm for calculating journey times on the M25, video footage and ANPR data, taken from two gantries between Junctions 15 and 16, have been recorded as part of the monitoring of the C...... hiện toàn bộ
Comparison of charging methods in 3G mobile networks (consumer behaviour versus tariff models)
Eleventh International Conference on Road Transport Information and Control, 2002. (Conf. Publ. No. 486) - - Trang 382-387 - 2002
F. Khan, G. Foster, S. Vahid, N. Baker
The paper describes an approach to analyse various charging mechanisms according to consumer behaviour, service types and tariff models in third generation (3G) mobile networks. In the area of charging for mobile networks, much work has been done to create proprietary billing solutions to address the problems of optimal allocation of network resources and bandwidth control. However, the sophistica...... hiện toàn bộ
Estimation of salt contamination level on the high voltage insulators surfaces during rainy season using artificial neural network
Eleventh International Conference on Road Transport Information and Control, 2002. (Conf. Publ. No. 486) - - Trang 303-308 - 2002
A.S. Ahmad, P.S. Ghosh, S.A.K. Aljunid, H. Ahmad
Power system reliability depends mainly on the environmental and weather conditions which cause flashover on polluted insulators. Such flashover leads to system outages. Near the coastal areas the salt contamination can be rapidly built on the surface of the insulators and form a conducting layer by absorbing wet from the mist. This layer in some cases leads to flashover. Study of contamination of...... hiện toàn bộ
Predictive power control for S-UMTS based on least-mean-square algorithm
Eleventh International Conference on Road Transport Information and Control, 2002. (Conf. Publ. No. 486) - - Trang 128-132 - 2002
H.S.H. Gombachika, R. Tafazolli, B.G. Evans
In order to exploit the presence of non-zero autocorrelation between consecutive samples of channel variations, predictive schemes based on a recursive least squares (RLS) adaptive algorithm have been proposed. The main motivation for using RLS is its fast convergence property. The RLS algorithm places enormous computational burden on the transmit power control system. In slow power control, howev...... hiện toàn bộ
Finite element modelling of nonlinear stress grading materials for machine end windings
Eleventh International Conference on Road Transport Information and Control, 2002. (Conf. Publ. No. 486) - - Trang 265-268 - 2002
A.E. Baker, A.M. Gully, J.C.G. Wheeler
As machine end windings leave the stator core their surface can be subject to high voltage gradients. The high electric stresses arising here can lead to sparking and erosion. To alleviate the stresses special stress grading materials are applied whose resistivity varies with the applied stress. Since the tape is very thin in comparison with other dimensions a surface representation has been imple...... hiện toàn bộ
Hierarchical management of CDMA network resources
Eleventh International Conference on Road Transport Information and Control, 2002. (Conf. Publ. No. 486) - - Trang 216-220 - 2002
W.S. Thong, J. Bigham
The paper describes the use of a layer-based approach to managing CDMA uplink network resources. The aim of the proposed method is to specify an integrated call allocation and admission control algorithm for a CDMA network with the ability to tailor-make solutions based on network load and topology. The paper includes investigations on the use of an auction-based method for the allocation and admi...... hiện toàn bộ
Performance analysis of smart antenna systems for indoor wireless LANs
Eleventh International Conference on Road Transport Information and Control, 2002. (Conf. Publ. No. 486) - - Trang 418-422 - 2002
L.J. Pesik, M.A. Beach, D.P. McNamara, P.N. Fletcher
Given the potential market for wireless LAN (WLAN) technology, capacity within the available 2 and 5GHz frequency bands is likely to fall short of market demands. Multiple-sector antenna arrays are known to be able to provide capacity enhancement by means of interference reduction through spatial filtering. In this paper, the performance of an eight-element circular array acting as an access point...... hiện toàn bộ
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