Browsing by Author "Wijesuriya, WASI"

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    item: Article-Abstract
    Fuzzy based stabilizer control system for quad-rotor
    Sampath, BG; Perera, KCR; Wijesuriya, WASI; Dassanayake, VPC
    In this paper the design, development and testing of a stabilizer control system for a Quad-rotor is presented which is focused on the maneuverability. The mechanical design is performed along with the design of the controlling algorithm which is devised using fuzzy logic controller. The inputs for the system are the angular positions and angular rates of the Quad-rotor relative to three axes. Then the output data is filtered from an accelerometer and a gyroscope through a Kalman filter. In the development of the stability controlling system Mandani fuzzy model is incorporated. The results prove that the fuzzy based stabilizer control system is superior in high dynamic disturbances compared to the traditional systems which use PID integrated stabilizer control systems.
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    item: Conference-Full-text
    Intelligent lighting controller for domestic and office environments
    (2013) Wijesuriya, WASI; Perera, AHP; Gayan, JMU; Attalage, RA; Dassanayake, VPC
    The use of natural light instead of artificial light to conduct activities has been shown to havepositive physical and psychological effects in humans. Thus the growing trend of incorporating natural light in office spaces and households has created a need for control between the sources of natural and artificial light. Providing autonomous adequate natural light when it is present and compensating when the light level does not meet the required level, is the primary task of such controllers. Furthermore, saving energy by operating intelligently according to user presence and demand is the other aspect such controllers strive to achieve. The aim of the project is to develop a system which addresses aspects of controlling both natural and artificial light inside a room efficiently and at the same time being cost effective in installation. The project aims to develop a system which is adapted to conditions found in Sri Lanka and to research on the preference of light levels in defined groups of people (consisting of Sri Lankans). After which a mathematical model is developed to achieve the aforementioned criteria of balancing light sources to a user.
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    item: Conference-Full-text
    Intelligent lighting controller for domestic and office environments
    (The Engineering Research Unit, University of Moratuwa, 2013-02) Wijesuriya, WASI; Perera, AHP; Gayan, JMU; AttaIage, RA; Dassanayake, P; Rodrigo, R
    ne use of natural light instead of artificial light to conduct activities has been shown to havepositive physical and psychological effects in humans. Thus the growing trend of incorporating natural light in office spaces and 'households has created a need for control between the sources of natural and artificial Ugh,. Providing autonomous adequate natural light when it is present and compensating when the light level does not meet the required level, is the primarv task of such controllers. Furthermore, saving energy by operating intelligently according to user presence and demand is the other aspect such conh oilers strive to achieve. The aim of the project is to develop a system which addresses aspects of conti oiling both natural and artificial light inside a room efficiently and at the same time being cost effective in installation. The project aims to develop a system which is adapted to conditions found in Sri Lanka and to research on the preference of light levels in defined groups of people (consisting of Sri Lankans). After which a mathematical model is developed to achieve the aforementioned criteria of balancing light sources to a user.