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 61 for “"H-Infinity"”.
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The robustness of H-infinity control
… a statement that the controllers generated by H-infinity design methods are fragile. A norm was introduced called the parametric stability margin, to serve as a measure of this robustness. A fragile controller is defined as a controller that is very sensitive to changes in its controller …
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Control system design using H [infinity] optimization
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1988.
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Robust H[infinity] control via quadratic stabilization
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Neutral point inverter controller using H infinity techniques
… leg and a split dc link. In this project, a H infinity (H∞ ) current controller is proposed to force the current flowing through the split dc link to be nearly zero so that the neutral-point current is stable, and then, a current control loop is added to eliminate the imbalance of the current …
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Generalized Polynomial H(infinity) Predictive Control Utilizing Minimax Prediction
Due to increased interest in the development and implementation of control schemes which are inherently robust, H$\sb\infty$ optimal control methods are the focus of a great deal of study in the current literature. Industry, however, has been slow in adopting these methods because of the …
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Robust regulation with H(2) or H(infinity) performance
In this thesis, three performance problems in linear control systems are studied. Robust regulation against steps and sinusoids is the first. Major results on this classic problem are rederived using only basic state-space ideas.
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Sensitivity of H[infinity] controller designs to structured uncertainty
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
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H-Infinity Norm Calculation via a State Space Formulation
There is much interest in the design of feedback controllers for linear systems that minimize the H-infty norm of a specific closed-loop transfer function. The H-infty optimization problem initiated by Zames (1981), \\cite{zames1981feedback}, has received a lot of interest since its formulation. In …
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Control of flexible-link manipulators using nonlinear H(infinity) techniques
Most engineering systems encountered in practice exhibit significant nonlinear behavior. For control of systems exhibiting nonlinearities, the normal design procedure is to construct a linearized approximation of the process model followed by the application of a linear control methodology. This …
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Improved continuous-time higher harmonic control using H [infinity] methods
… performance metrics are incorporated into an H [infinity] control problem. For a given plant, the resulting H [infinity] controller achieves the maximum performance, thus allowing us to identify the performance limitation in harmonic disturbance rejection. However, the H [infinity] controllers …
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Reliable control of decentralized systems: An ARE-based H(infinity) approach
This thesis presents a new method of decentralized linear, time-invariant control system synthesis based on the algebraic Riccati equation (ARE). The basic decentralized design guarantees closed-loop stability and a predetermined level of worst-case disturbance attenuation. Certain modifications of …
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Robust estimator design using the H[infinity] norm and [mu] synthesis
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1991.
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An H [infinity] power flow approach to control of uncertain structures
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1990.
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H-Infinity Control in Infinite-Dimensional Spaces and Related Partial Differential Equations
The eighth chapter studies the solvability of HJI equations that arise in nonlinear $H\sp{\infty}$ control problems where the system is affine in the control and the disturbance. In each case the existence of viscosity supersolutions is proven.
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A nonconservative solution to the general mixed H2/H-[infinity] optimization problem
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1992.
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Robust Control and Motion Planning for Nonlinear Underactuated Systems Using H -Infinity Techniques
… inputs are improved through an iterative Hinfinity-filter. Techniques are demonstrated for generalizing the motion planning algorithm to address the obstacle avoidance, multiple vehicle, and minimum distance planning problems. To track a desired trajectory, first a state feedback control …
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Evaluation and extension of the RLQR using a mixed H2/H[infinity] interpretation
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1993.
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Control of a dual inverted pendulum system using linear-quadratic and H-infinity methods
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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