There has been a general view articulated within the railway industry that there needs to be greater systems thinking and systems engineering applied to major projects within the industry (Network Rail, 2013 and Rail Safety and Standards Board, 2012). However, there are many dif…
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This thesis investigates the way to reduce the maintenance cost and increase the life cycle of the offshore wind turbines, as in the offshore case maintenance is highly difficult and expensive. Firstly, we study the possibility to replace the vulnerable and expensive DC link capacit…
There is a drive in industry to reliably detect surface breaking sub-millimetre defects in low electrical conductivity materials, such as stainless steel, titanium, and titanium aluminide using eddy-current testing. The sensitivity of the eddy current method to these materials i…
Motivated by political, social and economic factors, automotive original equipment manufacturers have adopted vehicle electrification as a technology to either reduce or eliminate tailpipe emissions. However, the design and development of Battery Electric Vehicles (BEVs) are fac…
Loudspeaker research has been carried out for many years and some of the latest developments involve a panel to produce the sound. Using panels to produce sound offers many possible advantages – for example, it is possible to create sound using a window or a house wall. However,…
This thesis reports a new method for stability analysis and maximum time delay estimation in networked control systems with applications to distributed energy systems. The proposed new method is based on using finite difference approximation for the delay term and then the Lyapu…
Remote detection of body-worn concealed weapons or explosives (CWE) is a field of ongoing research. In this Thesis the feasibility of CWE detection by using the UWB radar is explored. The CWE detection is based on the analysis of the Late Time Response (LTR) of the human which h…
Hollow low density microspheres were prepared by adsorbing kaolin nanoparticles onto a polystyrene (PS) template. A cationic polyelectrolyte, poly(diallydimethylammonium chloride), was initially adsorbed on the PS to render the surface cationic enabling the kaolin nanoparticles …
This research work focuses on the analysis of multi-layered, anechoic tiles for underwater applications, especially in the field of communications. It is firstly shown how the sound absorbing properties of viscoelastic materials can be modified and enhanced by the proper use of …
Two sets of electrically small antennas in the form of coplanar meander dipoles have been designed and tested in this study. The meander dipoles are the anti-symmetrical and the symmetrical meander structures. Both sets were based on the 1.0 GHz linear halfwavelength dipole, i.e…
The requirements for ever faster circuits and higher packing density have driven the continuous downscaling of the transistor sizes in the last 50 years or so. This leads to higher electrical field and operation temperature and, in turn, accelerates the degradation. One of the m…
Combined Heat and Power Generation (CHP) or cogeneration has been considered worldwide as the major alternative to traditional energy systems in terms of signi ticant energy saving and environmental conservation. A renewable energy resource-fuelled CHP would deliver even more en…
In this thesis, a variety of algorithms for synthesis and optimisation of combinational and sequential logic circuits are developed. These algorithms could be part of new commercial EGAD package for future VLSI digital designs. The results show that considerable saving in compon…
Segmentation of complex scenes to aid surveillance is still considered an open research problem. In this thesis a computational model (CM) has been developed to classify a scene into foreground, moving-shadow and background regions. It has been demonstrated how the CM, with the …
The electric potential sensor is a novel, ultra high impedance sensor, previously developed at the University of Sussex. These sensors have been applied to a range of applications, including electrophysiology, non destructive testing of composite materials and novel nuclear magn…
Electromagnetic interference (EMI) is an escalating concern in the modern electronic climate. As such it has become a critical area to consider when designing and packaging electronics. With the growing volume of electronic devices available and with processor frequencies increa…
Wind is an important source of renewable energy and is widely available, despite the changing condition. In recent years a growing number of manufacturers have produced small wind turbines suitable for utilisation by individual householders or small businesses. These systems are…
This thesis investigates the incorporation of target phase into sonar signal processing, for enhanced information in the context of acoustical oceanography. A sonar system phase calibration method, which includes both the amplitude and phase response is proposed. The technique i…
The growing demand for development and deployment of new wireless services has influenced the hardware design procedure including antennas and radio frequency (RF) front end, particularly in portable devices. Hence, novel solutions that are multiband, multimode, low profile, low…