Dissertations for Systems Engineering (SE)

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https://bspace.buid.ac.ae/handle/1234/490

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Browsing Dissertations for Systems Engineering (SE) by Subject "energy dissipation"

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    Aircraft wing flutter control
    (The British University in Dubai (BUiD), 2013-06) Tavalla, Sahar Sadat
    This research includes the design of a multivariable control system for aircraft wings. Two objectives are desired. The first is to control the vibrational problem for low-speed flight by applying a feedback control strategy. The second goal is to demonstrate that the controller for this wing assembly dissipates the least energy by comparing an alternative controller design technique. Simple procedures using established methods relating the wing vibrational problems, are outlined. The control strategies invoked using a simplified flutter dynamic model. A compensator designed to provide enhanced flutter suppression was employed. The transient performance of the system was computed for various flight velocities. Comparison of the energy dissipation for the gain ratios investigated was obtained. Numerical simulation was used to demonstrate the effectiveness of the approach advocated.
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    Design Study for Optimum Multivariable Control System for Wind Tunnel Regulation
    (The British University in Dubai (BUiD), 2016-08) Ashour, Ashraf Hussein
    This Dissertation investigates the design of a multivariable control system for a wind tunnel to obtain the optimum control strategy in order to minimize energy dissipation, noise and cost which improve the quality and integrity of the wind tunnel test measurements. First the research is focused on identifying how a wind tunnel work with brief information about its components and types. Then the least effort control technique will be applied and discussed. Also study includes a controller designed by the Nyquist Array method and other control strategies. Plots of step response, disturbance suppression and transient recovery for both techniques will be presented with their block diagrams. The dissertation concludes with a comparison of the control methods used, based on the performance and energy dissipation.