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 32 for “"output feedback control"”.
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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 control and applications to Very Flexible Aircraft
… anomalies motivate an adaptive approach for control of VFA. Another particular control challenge for VFA is that its flexible modes cannot be measured accurately, which necessitates an output-feedback multi-input multi-output (MIMO) control approach. The focus of this thesis is on an adaptive …
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Adaptive Predictor-Based Output Feedback Control of Unknown Multi-Input Multi-Output Systems: Theory and Application to Biomedical Inspired Problems
… goal of this research work is to develop FES controllers to enable patients with movement-disorder to control their limbs in a desired manner and, in particular, to aid Parkinson's patients to suppress hand tremor. In our effort to develop strategies for muscle stimulation control, we first …
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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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Applied Nonlinear Control of Unmanned Vehicles with Uncertain Dynamics
The presented research concerns the control of unmanned vehicles. The results introduced in this dissertation provide a solid control framework for a wide class of nonlinear uncertain systems, with a special emphasis on issues related to implementation, such as control input amplitude and rate …
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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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Adaptive Control Applied to the Cal Poly Spacecraft Attitude Dynamics Simulator
… to provide proof of concept of two adaptive control theories developed by former Cal Poly students: Nonlinear Direct Model Reference Adaptive Control and Adaptive Output Feedback Control. The Spacecraft Attitude Dynamics Simulator is a student-built air bearing spacecraft simulator controlled …
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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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L1 adaptive control with quantization and delay
This dissertation involves L1 adaptive control development and analysis in the presence of quantization and system delays, addressing quantized uncertain systems and delayed uncertain systems. We discuss three cases of control of quantized systems: the state feedback control for systems with input …
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Feedback linearization and adaptive control of a nonlinear aeroelastic system
… the aeroelastic system is not input-state feedback linearizable, a partial linearized representation of the system in dimension three can be obtained. Based on this partially linearized representation, a new inverse controller was derived and simulation results show that control of pitch …
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Lyapunov-Based Robust and Adaptive Control Design for nonlinear Uncertain Systems
The control of systems with uncertain nonlinear dynamics is an important field of control science attracting decades of focus. In this dissertation, four different control strategies are presented using sliding mode control, adaptive control, dynamic compensation, and neural network for a nonlinear …
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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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Modeling and adaptive control of indoor unmanned aerial vehicles
… environments presents many unique challenges in control and planning. This thesis investigates modeling, adaptive control and trajectory optimization methods as applied to indoor autonomous flight vehicles in both a theoretical and experimental context. Three types of small-scale UAVs, including …
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Control of constrained moving-boundary process with application to steel continuous casting
… as operational safety. Most of the cooling spray control techniques currently used in the steel industry are effectively open-loop due to the lack of reliable measurements to enable feedback. Namely, the high temperatures, the variable surface emissivity, the scale formation, and the steam from …
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An experimental investigation into active damage control systems using positive position feedback for AVC
This work discusses the use of Positive Position Feedback (PPF) for Active Vibration Control as part of an Active Damage Control System (ADCS). Vibration control increases the fatigue life of a structure and decreases the in-plane stresses that can cause delamination in a composite. PPF is a …
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On Observer-Based Control of Nonlinear Systems
… signal processing, telecommunications, and control theory and are used in numerous applications. The feedback principle is an important concept in control theory. Many different control strategies are based on the assumption that all internal states of the control object are available for …
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Fast stochastic model predictive control under parametric uncertainties
Model predictive control (MPC) is widely applied in industry due to its ability to handle constraints explicitly Many processes in chemical engineering have a high number of states, but a relatively low number of inputs and outputs Input-output formulations of MPC employ process models, predicting …
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INVESTIGATIVE STUDY OF CONTROL DESIGN FOR A CLASS OF NONLINEAR SYSTEMS USING MODIFIED STATE-DEPENDENT DIFFERENTIAL RICCATI EQUATION
… (SDRE) plays an important role in nonlinear controller design. For autonomous nonlinear systems that can be expressed in linear form with state-dependent coefficients (SDC), SDRE-based controllers guarantee local asymptotic stability of the closed-loop system, under pointwise stabilizability …
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Robust de-centralized control and estimation for inter-connected systems
… with the theoretical development of the control of inter-connected systems to achieve the whole overall stability and specific performance. A special included feature is the Fault-Tolerant Control (FTC) problem for the inter-connected system in terms of local subsystem actuator fault …
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Observer-based robust fault estimation for fault-tolerant control
A control system is fault-tolerant if it possesses the capability of optimizing the system stability and admissible performance subject to bounded faults, complexity and modeling uncertainty. Based on this definition this thesis is concerned with the theoretical developments of the combination of …
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