Curvilinear MetaSurfaces for Surface Wave Manipulation.
La Spada, L., Spooner, C., Haq, S., & Hao, Y. (2019)
Curvilinear MetaSurfaces for Surface Wave Manipulation. Scientific Reports, 9(1), https://doi.org/10.1038/s41598-018-36451-8
Artificial sheet materials, known as MetaSurfaces, have been applied to fully control both space and surface waves due to their exceptional abilities to dynamically tailor wav...
Surface wave cloaking using transformation optics
La Spada, L., & Hao, Y. (2015)
Surface wave cloaking using transformation optics. In 2015 1st URSI Atlantic Radio Science Conference (URSI AT-RASC)doi:10.1109/ursi-at-rasc.2015.7302892
Recently, there has been an increasing interest in the study of manipulating surface waves from microwave to optical frequencies [1, 2], especially for the design of conformal...
Electromagnetic modeling of metamaterial-based sensors
Spada, L. L. (2015)
Electromagnetic modeling of metamaterial-based sensors. doi:10.1109/imws-bio.2014.7032448
In this paper metamaterial-based sensors electromagnetic modeling is presented. In particular, the interaction between the electromagnetic waves and such structures is analyti...
Metasurface-Epsilon Near Zero-based Electromagnetic Wave Absorber
La Spada, L. (2014)
Metasurface-Epsilon Near Zero-based Electromagnetic Wave Absorber. In Proceedings of 9th International Conference on Body Area Networksdoi:10.4108/icst.bodynets.2014.257016
The purpose of this paper is to design a new electromagnetic wave absorber. It consists of a planar layered structure with an isotropic Epsilon-Near-Zero (ENZ) material and a ...
Spectral Green's Function for SPR Meta-Structures
Iovine, R., La Spada, L., Tarparelli, R., & Vegni, L. (2014)
Spectral Green's Function for SPR Meta-Structures. Materials Science Forum, 792, 110-114. doi:10.4028/www.scientific.net/msf.792.110
In this paper we propose a new approach to study the electromagnetic field in Surface Plasmon Resonance (SPR) meta-structures. The geometry is a planar structure infinitely ex...
Robust chattering-free (higher order) sliding mode control for a vector-controlled induction machine
Goh, K., Dunnigan, M., & Williams, B. (2005)
Robust chattering-free (higher order) sliding mode control for a vector-controlled induction machine. In 2004 5th Asian Control Conference (IEEE Cat. No.04EX904)
The chattering behaviour that is inherent in standard sliding mode control is often an obstacle for practical application if neglected. In this paper, special attention is giv...
Sliding mode position control of a vector-controlled induction machine with nonlinear load dynamics
Goh, K., Dunnigan, M., & Williams, B. (2004)
Sliding mode position control of a vector-controlled induction machine with nonlinear load dynamics. In Second International Conference on Power Electronics, Machines and Drives (PEMD 2004)https://doi.org/10.1049/cp%3A20040264
In this paper, a solution to the position control problem for a vector controlled induction machine in the presence of nonlinear load friction, is proposed. A sliding mode (SM...
Second Order Sliding Mode Control of a Diesel Engine
Khan, M. K., Goh, K., & Spurgeon, S. K. (2003)
Second Order Sliding Mode Control of a Diesel Engine. Asian Journal of Control, 5(4), 614-619. https://doi.org/10.1111/j.1934-6093.2003.tb00177.x
A 2nd order sliding mode algorithm is applied to control the speed of a diesel power generator set. Tuning guidelines are given. The robustness of the controller is investigat...
An Application of Higher Order Sliding Modes to the Control of a Diesel Generator Set (GENSET)
Presentation / Conference
Spurgeon, S., Goh, K., & Jones, B. (2002, July)
An Application of Higher Order Sliding Modes to the Control of a Diesel Generator Set (GENSET). Presented at 7th International Workshop on Variable Structure Systems
Diesel engines have become a common source of power, both for vehicles and for static equipment because they are fuel efficient, robust and reliable. It is important that dies...
Aspects of diagnostic schemes for biomedical and engineering systems
Jones, N., Pont, M., Spurgeon, S., Goh, K., Parikh, C., Lim, C., & Twiddle, J. (2000)
Aspects of diagnostic schemes for biomedical and engineering systems. IEE proceedings. Science, measurement and technology, 147(6), 357-362. https://doi.org/10.1049/ip-smt%3A20000859
The paper considers aspects of work carried out on projects in medical diagnostics and engineering fault detection and control, and shows the development of some ideas in sign...