Browsing Τμήμα Μαθηματικών και Στατιστικής / Department of Mathematics and Statistics by Subject "Dynamics"
Now showing items 1-13 of 13
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Article
Adaptive LQ control with anti-windup augmentation to optimize UAV performance in autonomous soaring applications
(2008)The performance of a glider can be considerably improved by means of soaring and optimization of its trajectory. Recent advances in the area of static soaring assume known linear glider dynamics and no actuator saturation ...
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Article
Computational study of the dispersively modified Kuramoto-Sivashinsky equation
(2012)We analyze and implement fully discrete schemes for periodic initial value problems for a general class of dispersively modified Kuramoto-Sivashinsky equations. Time discretizations are constructed using linearly implicit ...
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Article
Directly computable L2 and L∞ performance bounds for morse's dynamic certainty equivalence adaptive controller
(1995)In this paper we consider a model reference adaptive control scheme where the classical error augmentation and standard tuning error normalization are avoided through the use of Morse's high‐order tuner. We consider the ...
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Conference Object
Discrete-time Adaptive Mixing Control with stability-preserving interpolation: The output regulation problem
(2011)The main result of this paper is the extension of the Adaptive Mixing Control (AMC) approach, to the discrete-time setting. The stability and robustness properties of the adaptive mixing control scheme are analyzed. It is ...
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Conference Object
Flight dynamics and control of air-breathing hypersonic vehicles: Review and new directions
(2003)The current air-breathing hypersonic flight (AHF) technology programs focus on development of flight test vehicles and operational vehicle prototypes that utilize airframe-integrated scramjet engines. A key issue in making ...
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Conference Object
Identification and control of aircraft dynamics using radial basis function networks
(Publ by IEEE, 1993)In this paper, we investigate one type of neural networks, namely the Radial Basis Functions (RBF) networks, and apply them to the identification and control problems of an aircraft system. The RBF network is used as an ...
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Article
Maxima for Gaussian seas
(2006)The probability distribution of the height of global maximum for a Gaussian random field evolving in time is studied. In particular, the effect of spreading is studied and the role of the wave kinematics is discussed. It ...
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Conference Object
Optimal flight trajectories through recursive thermal streets with uncertain climb rates
(2008)The flight performance of Unmanned Aerial Vehicles (UAVs) has recently been attempted to be optimized in various static soaring applications. The optimal flight paths can be generated for specific scenarios where the climb ...
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Conference Object
Real-Time Control of a Segmented Telescope Test-Bed
(2003)The control of large segmented telescopes is a challenging one due to the complexity and high order of the system. The high order dynamics lead to high order controllers that require more memory and faster computations for ...
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Article
Reply to 'Comments on the robust stability analysis of adaptive controllers using normalizations' by P. P. Khargonekar and R. Ortega
(1990)The author addresses a statement in the above-titled paper (ibid., vol. 34, no. 4, P. 478, Apr. 1989) that the proofs in four earlier papers, including two of which he is a coauthor, failed to establish that the proposed ...
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Conference Object
A robust adaptive control design for gliders subject to actuator saturation nonlinearities
(2007)Range, endurance and cross-country speed of a glider can be considerably improved by efficient soaring methods. Recent static soaring research assumes known linear glider dynamics which do not change with flight conditions, ...
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Conference Object
Robust neural adaptive control of a hypersonic aircraft
(2003)Design of a robust Multi Input Multi Output (MIMO) neural adaptive controller for the longitudinal dynamics of a generic hypersonic aircraft is presented. This aircraft model is highly nonlinear, multivariable, unstable ...
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Conference Object
Surface failure detection for an F/A-18 aircraft using neural networks and fuzzy logic
(IEEE, 1994)In this paper we consider the problem of detecting control surface failures of a high performance aircraft. The detection model is developed using a linear, six degree of freedom dynamic model of an F/A-18 aircraft. The ...