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 20 of 27 for “"nonlinear estimation"”.
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Approximate nonlinear estimation.
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 1968
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Nonlinear estimation theory and phase-lock loops.
Thesis. 1976. Ph.D.--Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics.
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Dimensional reduction in nonlinear estimation of multiscale systems
State or signal estimation of stochastic systems based on measurement data is an important problem in many areas of science and engineering. The true signal is usually hidden, evolving according to its own dynamics, and observations are usually corrupted and possibly incomplete. The goal is to …
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Robust Nonlinear Estimation and Control Applications using Synthetic Jet Actuators
… relationship) of the synthetic jet actuators is nonlinear and contains parametric uncertainty. Further control design challenges exist in situations where multiple actuators lose effectiveness.</p> <p>This dissertation focuses on the suppression of limit cycle oscillations on small unmanned air …
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Nonlinear estimation for condition monitoring of advanced gas-cooled nuclear reactor cores
… the condition monitoring of an AGR leads to the estimation of the friction force resulting from the interaction of the fuel assembly and the core channel. To this end the main objective of this work is to investigate estimation techniques that are needed in industrial applications and in …
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Nonlinear estimation for gyroscope calibration for the inertial pseudo star reference unit
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1994.
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Nonlinear Estimation and Control Methods for Mechanical and Aerospace Systems under Actuator Uncertainty
… challenges to be overcome in closed-loop nonlinear AFC design. Additional challenges arise in control design for practical systems with limited onboard sensor measurements and uncertain actuator dynamics.</p> <p>In this thesis, robust nonlinear control methods are developed, which are …
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Efficient solution of the Fokker-Planck Equation via smooth particle hydrodynamics for nonlinear estimation
… the transient behavior of higher dimensional nonlinear dynamical systems subject to Gaussian white noise excitation remains an open problem with broad application to nonlinear estimation, uncertainty quantification, and reliability to name but a few. These problems remain open in large part …
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Novel probabilistic and distributed algorithms for guidance, control, and nonlinear estimation of large-scale multi-agent systems
… three main areas of shape formation, distributed estimation, and attitude control of large-scale multi-agent systems. In the first part of this dissertation, we address the problem of shape formation for thousands to millions of agents. Here, we present two novel algorithms for guiding a …
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Bayesian Inference for Nonlinear Dynamical Systems : Applications and Software Implementation
The topic of this thesis is estimation of nonlinear dynamical systems, focusing on the use of methods such as particle filtering and smoothing. There are three areas of contributions: software implementation, applications of nonlinear estimation and some theoretical extensions to existing …
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Parameter Estimation for Delay Differential Equations: A New Galerkin Approximation Framework
… Within this Galerkin framework, the parameter estimation problem is reduced to the estimation of some scalar parameters in the resulting ordinary differential equations. Thanks to the analytical nature of the Galerkin approximation, the latter estimation problem can be handled efficiently, even …
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The Extended Preferred Ordering Theorem for Radar Tracking Using the Extended Kalman Filter
<p>A certain problem in nonlinear estimation exists in radar tracking. Usually radar detections provide instantaneous position measurements in radar (polar) coordinates at discrete times, while tracks (estimated positions and motions over continuous time) are determined in rectangular coordinates; …
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Theoretical and experimental application of neural networks in spaceflight control systems
… first method uses a neural network to perform nonlinear estimation in the control space for both translational and attitude control. The second method uses an observer with a neural network to perform estimation outside the control space, and input-output feedback linearization using the …
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Improving the consistency of nonlinear estimators: analysis, algorithms, and applications
… search and rescue, and planetary exploration. Nonlinear estimation (i.e., estimating the state of a nonlinear system from noisy measurements) arises in all these applications. For instance, robot localization - which is considered as one of the fundamental problems in robotics - seeks to …
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Statistical Calibration Theory
… of the word "calibration". Maximum likelihood estimation is the statistical formulation of the classical approach.</p> <p>The second approach to calibration takes into account the distribution of X values for the units to be measured and attempts to minimize the mean squared deviations between …
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Stochastic adaptive estimation with applications to nonlinear control
… plant problem. It uses a joint detection/estimation approach to give a very close approximation to the unrealizable optimum switched-linear estimator. The advantages and disadvantages of the two adaptive estimators are discussed, and it is found that a very reliable and accurate estimator …
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Observer Design for Non-Monotonic Nonlinear Systems and Interesting Contemporary Applications
… analyzes observer design for non-monotonic nonlinear systems and develops globally stable observer design techniques for such systems. Non-monotonic nonlinear systems are frequently encountered in many practical applications, including vehicle tracking, magnetic position estimation, …
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The Stock Market, the Housing Market and Consumption
… examination of OECD countries. It is argued that nonlinear estimation might provide a better explanation of fluctuations in the relationship between consumption and wealth, given the nature of the studied variables and the complexity of economic systems. The econometric methods employed include …
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