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 93 for “"output feedback"”.
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L1 adaptive output-feedback control architectures
… research focuses on development of L1 adaptive output-feedback control. The objective is to extend the L1 adaptive control framework to a wider class of systems, as well as obtain architectures that afford more straightforward tuning. We start by considering an existing L1 adaptive …
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Adaptive Output Feedback Stabilization of Nonlinear Systems
Output feedback control design techniques are required in practice due to the limited number of sensors/measurements available for feedback. This thesis focuses on output feedback controller design techniques for nonlinear systems subject to different system restrictions. The problem of controlling …
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Output feedback adaptive control in the presence of unmodeled dynamics
This thesis outlines a method of output feedback adaptive control in the presence of matched unmodeled dynamics, uncertain control effectiveness and matched parametric uncertainties. An adaptive feedback controller that augments an assumed existing observer based linear controller is developed. The …
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Adaptive output-feedback control and applications to Very Flexible Aircraft
… be measured accurately, which necessitates an output-feedback multi-input multi-output (MIMO) control approach. The focus of this thesis is on an adaptive output-feedback controller for a generic class of MIMO plant models with an emphasis on the control of a VFA so as to execute desired flight …
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On the synthesis of switched output feedback controllers for linear, time-invariant systems
The theory of switching systems has seen many advances in the past decade. Its beginnings were founded primarily due to the physical limitations in devices to implement control such as relays, but today there exists a strong interest in the development of switching systems where switching is …
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Output feedback rotational maneuvers and vibration damping of Nasa Scole system by inversion theory
… angles or (ii) angular velocity components as output variables for large rotational maneuvers and vibration suppression of the SCOLE System. Nonlinear inversion theory is used for the design. The design approach taken here is to decompose the rigid mode control from vibration stabilization. …
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Adaptive Predictor-Based Output Feedback Control of Unknown Multi-Input Multi-Output Systems: Theory and Application to Biomedical Inspired Problems
… To tackle these challenges, we have developed output feedback adaptive control approaches for a class of unknown multi-input multi-output systems. Such control strategies are first developed for linear systems, and then extended to the nonlinear case. The proposed controllers, supported by …
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Event-triggering architectures for adaptive control of uncertain dynamical systems
… Specifically, the design and analysis of state feedback adaptive control systems over wireless networks using event-triggering control theory is first presented. The state feedback adaptive control results are then generalized to the output feedback case for dynamical systems with unmeasurable …
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Analytic Parameterization of Stabilizing Controllers for the Moore-Greitzer Compressor Model
… application of a design procedure for dynamic output feedback design for systems with nonlinearities satisfying quadratic constraints (QC). Our method was motivated by the challenges of output feedback control design for the three-state Moore-Greitzer (MG) compressor model. The classical …
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L1 adaptive control for nonlinear and non-square multivariable systems
This research presents development of L1 adaptive output-feedback control theory for a class of uncertain, nonlinear, and non-square multivariable systems. The objective is to extend the L1 adaptive control framework to cover a wide class of underactuated systems with uniform performance and …
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Stabilization And Tracking Of The Van Der Pol Oscillator
… control techniques. First, the linear state feedback and linear adaptive state feedback controllers for the stabilization problem are designed. Then, non-linear state feedback and output feedback controllers are proposed for the tracking problem with known parameters. Finally, a dynamic …
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Systematic adaptive control design using sequential loop closure
… a new, systematic method of synthesizing an output feedback adaptive controller for a class of uncertain, non-square multi-input/multi-output systems. The control design process consists of first designing an inner-loop controller for a reduced order plant model to enforce command tracking of …
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Pole-placement with minimum effort for linear multivariable systems
… by minimum control effort using state and output feedback for linear multivariable systems. The novelty of the design lies in obtaining a direct transformation of the system matrices into a modified controllable canonical form. Two realizations are identified, and the algorithms to obtain …
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Near-Optimal Control of Atomic Force Microscope For Non-contact Mode Applications
… this study, we outline a nonlinear near-optimal feedback control approach for non-contact mode imaging designed to move the cantilever tip laterally about a desired trajectory and maintain the tip vertically about the equilibrium point of the attraction and repulsion forces. We also consider the …
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Applied Nonlinear Control of Unmanned Vehicles with Uncertain Dynamics
… the efficacy of the algorithms. Next, the output feedback control problem is treated, for a large class of nonlinear and uncertain systems. The proposed solution relies on a novel nonlinear observer which uses output measurements and partial knowledge of the system's dynamics to reconstruct …
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Verifiable Adaptive Control Solutions for Flight Control Applications
… is elaborated from its design perspective for output feedback solution and is extended to time-varying reference systems to support augmentation of gain-scheduled baseline controllers. Compared to conventional adaptive controllers, L1 control has the following advantages: i) it has guaranteed …
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Hybrid Active/Passive Models with Frequency Dependent Damping
… original size. A linear quadratic regulator and output feedback are used to actively control vibration. The length and placement of treatment is optimized using different criteria. It is shown that placing the active element on the opposite side of the passive element is capable of vibration …
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Simplex-type variable structure controllers for stability and performance
… and results are given for both the state feedback and dynamic output feedback cases.
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Adaptive, suboptimal and nonlinear control of an aeroelastic system
… surface for the purpose of control. First an output feedback modular adaptive control system is derived. Quasi-steady aerodynamic model is used for the output feedback modular adaptive control system. For the synthesis of the adaptive controller, it is assumed that only pitch angle and plunge …
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