All Outputs (46)

Condition monitoring of wooden railway sleepers (2009)
Journal Article
Yella, S., Dougherty, M., & Gupta, N. K. (2009). Condition monitoring of wooden railway sleepers. Transportation Research Part C : Emerging Technologies, 17, 38-55. https://doi.org/10.1016/j.trc.2008.06.002

Wooden railway sleeper inspections in Sweden are currently performed manually by a human operator; such inspections are to large extent based on visual analysis. In this paper a machine vision based approach has been considered to emulate the visual... Read More about Condition monitoring of wooden railway sleepers.

Application of reset voltage feedback for droop minimization in the unidirectional current pulse transformer (2008)
Journal Article
McNeill, N., Gupta, N. K., Burrow, S. G., Holliday, D., & Mellor, P. H. (2008). Application of reset voltage feedback for droop minimization in the unidirectional current pulse transformer. IEEE Transactions on Power Electronics, 23, 591-599. https://doi.org/10.1109/TPEL.2007.915662

This paper investigates the application of reset voltage feedback for reducing errors due to droop in the signal derived from a current transformer sensing unidirectional current pulses in switched-mode power converter applications. Droop is minimise... Read More about Application of reset voltage feedback for droop minimization in the unidirectional current pulse transformer.

Assessment of the error in the average current sensed by the unidirectional current pulse transformer (2008)
Journal Article
McNeill, N., & Gupta, N. K. (2008). Assessment of the error in the average current sensed by the unidirectional current pulse transformer. IET Circuits, Devices and Systems, 2, 265. https://doi.org/10.1049/iet-cds%3A20070226

Advantages of using a current transformer (CT) for current sensing in switched mode power converters are that galvanic isolation is inherent, losses are low, the bandwidth is high and a high-amplitude output signal may be obtained. However, 'droop' o... Read More about Assessment of the error in the average current sensed by the unidirectional current pulse transformer.

Comparison of pattern recognition techniques for the classification of impact acoustic emissions. (2007)
Journal Article
Yella, S., Gupta, N. K., & Dougherty, M. S. (2007). Comparison of pattern recognition techniques for the classification of impact acoustic emissions. Transportation Research Part C : Emerging Technologies, 15, 345-360. https://doi.org/10.1016/j.trc.2007.05.004

Current day condition monitoring applications involving wood are mostly carried out through visual inspection and if necessary some impact acoustic examination is carried out. These inspections are mainly done intuitively by skilled personnel. In thi... Read More about Comparison of pattern recognition techniques for the classification of impact acoustic emissions..

Active current transformer circuits for low distortion sensing in switched mode power converters. (2004)
Journal Article
McNeill, N., Gupta, N. K., & Armstrong, W. (2004). Active current transformer circuits for low distortion sensing in switched mode power converters. IEEE Transactions on Power Electronics, 19, 908-917. https://doi.org/10.1109/TPEL.2004.830075

The current transformer (CT) is frequently used for sensing applications in switched mode power converters. Advantages are that galvanic isolation is inherently incorporated, bandwidth is high, losses are low and that a high-amplitude output signal m... Read More about Active current transformer circuits for low distortion sensing in switched mode power converters..

Equipment for the investigation of the accelerated curing of concrete using direct electrical conduction (2004)
Journal Article
Wilson, J. G., & Gupta, N. K. (2004). Equipment for the investigation of the accelerated curing of concrete using direct electrical conduction. Measurement : journal of the International Measurement Confederation, 35(3), 243-250. https://doi.org/10.1016/j.measurement.2003.11.002

The need for accelerated curing of concrete in precast civil engineering components is discussed, and the techniques available to achieve this are presented, with particular emphasis on the use of direct electrical conduction.

The principles of th... Read More about Equipment for the investigation of the accelerated curing of concrete using direct electrical conduction.