Department of Engineering Sciences: Recent submissions
Now showing items 921-940 of 1119
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Finite-time l1-gain control for positive switched systems with time-varying delay via delta operator approach
(Journal article; Peer reviewed, 2014)This paper is concerned with the problem of finite-time l 1 -gain control for positive switched systems with time-varying delay via delta operator approach. Firstly, sufficient conditions which can guarantee the l 1 -gain ... -
Research on amplifier performance evaluation based on δ-support vector regression
(Journal article; Peer reviewed, 2014)Focusing on the amplifier performance evaluation demand, a novel evaluation strategy based on δ-support vector regression (δ-SVR) is proposed in this paper. Lower computer calculation demand is considered firstly. And this ... -
Robust H∞ filtering for a class of complex networks with stochastic packet dropouts and time delays
(Journal article; Peer reviewed, 2014)The robust H∞ filtering problem is investigated for a class of complex network systems which has stochastic packet dropouts and time delays, combined with disturbance inputs. The packet dropout phenomenon occurs in a random ... -
Energy-efficient routing control algorithm in large-scale WSN for water environment monitoring with application to Three Gorges Reservoir area
(Journal article; Peer reviewed, 2014)The typical application backgrounds of large-scale WSN (wireless sensor networks) for the water environment monitoring in the Three Gorges Reservoir are large coverage area and wide distribution. To maximally prolong ... -
Exploring the best classification from average feature combination
(Peer reviewed; Journal article, 2014)Feature combination is a powerful approach to improve object classification performance. While various combination algorithms have been proposed, average combination is almost always selected as the baseline algorithm to ... -
Inconsistencies in the pozzolanic strength activity index (SAI) for silica fume according to EN and ASTM
(Journal article; Peer reviewed, 2014)New supplementary cementitious materials claimed to possess pozzolan properties emerge frequently. This development is driven both by economic and environmental pressures. Properties of new materials are compared with those ... -
Piston driven yaw mechanism
(Master thesis, 2014)The current thesis presents a piston driven yaw mechanism for wind turbines. Traditionally the yaw mechanismhas been one of the mayor contributors to down time and repair has been costly. The proposed designaims to improve ... -
Development, modeling and simulation of test equipment for subsea choke valves
(Master thesis, 2014)As a step toward being more e_ective and to improve test procedures, GE Oil & Gas wants to develop a workshoptool to automate the testing of Choke Valves. The Choke Valve Workshop Tool (CVWT) main functionis to operate the ... -
Development of a vision-based measurement system for relative motion compensation
(Master thesis, 2014)Motion compensation is used in many applications where no relative motion between two objects is desired. In the offshore industry, motion compensation systems are used to increase the operational window during load transfers ... -
An approach to day ahead forecasting of solar irradiance with an application to energy gain in solar thermal collectors
(Master thesis, 2014)Today, for the management of energy supply systems forecast information on load and theproduction of meteorology dependent (wind, solar, hydro) generation is ever rising. Solarirradiance forecasting is given a unique ... -
Home energy management system : a home energy management system under different electricity pricing mechanisms
(Master thesis, 2014)Peak demand is a severe problem in the electricity grid and it was solved by supply side management in the past. But nowadays the demand side management sources have drawn attention due to the economic and environmental ... -
Proper sizing of energy storage for grid connected photovoltaic system
(Master thesis, 2014)The requirement of an energy storage to a grid connected PV system, is highly desirable in cases like power outages. Another importance is to reduce the peak time electricity buying from the utility grid and discharging ... -
Effect of substrate improvement on optimising biogas yield from anaerobic digestion
(Master thesis, 2014)The anaerobic digestion process involves the decomposition of the organic matter to yield biogas; gas that is mainly composed of methane and carbon dioxide with traces of some other gases. This process is used for different ... -
Design and installation of a grid-connected PV system
(Master thesis, 2014)As the worlds electrical demand is being more covered by photovoltaic (PV) systems, Germanyinstalled 3.3 GW of the worlds PV systems in 2013 compared to 0.6 MW being installed inNorway. Irradiation measurements done for ... -
Power dispatching of active generators using droop control in grid connected micro-grid
(Master thesis, 2014)Renewable energy promises a green energy future for the world. However, many technical problems still have to be solved. Almost all renewable energy sources require power electronic converters for power processing and ... -
Measurements of magnetic flux density in rotating machines : development of a calibrated and portable measurement system
(Master thesis, 2014)Diagnostics of generator poles has traditionally been done by measuring the impedancein each pole and assume that the magnetic ux density is proportional to the impedance.With Hall-sensors it is possible to measure the ... -
State estimation for wireless network control system with stochastic uncertainty and time delay based on sliding mode observer
(Journal article; Peer reviewed, 2014)State estimation problem is considered for a kind of wireless network control system with stochastic uncertainty and time delay. A sliding mode observer is designed for the system under the situation that no missing ... -
Stability in mean of partial variables for coupled stochastic reaction-diffusion systems on networks: A graph approach
(Journal article; Peer reviewed, 2014)This paper is devoted to investigating stability in mean of partial variables for coupled stochastic reaction-diffusion systems on networks (CSRDSNs). By transforming the integral of the trajectory with respect to spatial ... -
Chemistry of desiccant properties of carbohydrate polymers as studied by near-infrared spectroscopy
(Journal article; Peer reviewed, 2013)The combination frequency of water molecule in near-infrared spectroscopy is very useful for studying water molecular adsorption on solid surfaces. The absorption is purely from water molecules, and the variation in the ... -
Fault detection of networked control systems based on sliding mode observer
(Journal article; Peer reviewed, 2013)This paper is concerned with the network-based fault detection problem for a class of nonlinear discrete-time networked control systems with multiple communication delays and bounded disturbances. First, a sliding mode ...