Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"nonaffine"”.
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Adaptive Control of Nonaffine Systems with Applications to Flight Control
Traditional flight control design is based on linearization of the equations of motion around a set of trim points and scheduling gains of linear (optimal) controllers around each of these points to meet performance specifications. For high angle of attack maneuvers and other aggressive flight …
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Neural network control of nonstrict feedback and nonaffine nonlinear discrete-time systems with application to engine control
"In this dissertation, neural networks (NN) approximate unknown nonlinear functions in the system equations, unknown control inputs, and cost functions for two different classes of nonlinear discrete-time systems. Employing NN in closed-loop feedback systems requires that weight update algorithms …
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Microscopic Theory of Linear Response in Amorphous Materials
… Moving to the mechanical aspect, the theory of nonaffine lattice dynamics is able to describe the various relaxation processes in the linear viscoelastic response of metallic glasses. In particular, to understand universal properties of relaxation, the VDOS obtained in simulations, or in …
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Reduced-basis approximation a posteriori error estimation for parabolic partial differential equations
… and subsequently extend these results to nonaffine and certain classes of nonlinear parabolic problems.
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The role of microarchitecture in the tensile properties of polymer scaffolds
… from a floppy regime to rigidity, and from nonaffine to affine regimes, with the increase of strain, coordination, density and bending rigidity. Additionally, we uncover the role of heterogeneity and micro organisation in the evolution of the network when the value of these latter parameters …
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Analytical Estimation of Value at Risk Under Thick Tails and Fast Volatility Updating
… for the maximum tail thickness, whereas the nonaffine structure of stochastic volatility captures the fast volatility updating. The non-affine structure assumes that volatility dynamics are non-linearly related to the square root of current volatility rather than the traditional linear …
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Intelligent Flight Control Systems Using Adaptive Deep Neural Networks and Concurrent Learning-Based Design Methods
<p>This thesis investigates deep neural network (DNN)-based adaptive control strategies for unmanned aerial vehicles (UAVs) operating under aerodynamic uncertainty and complex actuator dynamics.</p> <p>The first contribution presents a control strategy employing a concurrent learning (CL)-based DNN …