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 429 for “"adaptive control."”.
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Multivariable Adaptive Control
This thesis treats the problem of direct adaptive control of linear multivariable systems. The parametrization problem of adaptive control is discussed extensively. A pole-placement problem and a model-matching problem are formulated and interpreted in terms of model reference control. The problem …
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Reduced-order adaptive control
… (PLID) is developed for application in an adaptive control loop. The effects of noise are investigated for the case of full-order system identification, and the results are applied to the use of PLID as a reduced-order system estimator. A self-tuning regulator (STR) is constructed using …
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ADAPTIVE CONTROL DESIGN FOR QUADROTORS
Unmanned Aerial Vehicles (UAV) control has become a very important point of scientific study. The control design challenges of a UAV make it one of the most researched areas in modern control applications. This thesis specifically chooses the Quadrotor as the UAV platform. Considering the quadrotor …
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Optimal adaptive control with ΘLQG
… general purpose (locally optimal) nonlinear adaptive control on multiple-input multiple-output systems. This approach can be used to stabilize an under-actuated under-observed nonlinear dynamic system with noisy measurements while simultaneously identifying system parameters. It requires a …
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Adaptive control of nonlinear systems
In the last few years, adaptive control of nonlinear systems has emerged as an important area of research, with possible applications in areas as diverse as robotic systems, electric motors, chemical processes, and automotive suspensions. Many of the existing results employ design methods and proof …
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Robust adaptive control and filtering
… examines the robustness properties of various adaptive systems for control, filtering, and identification. These include the uniform boundedness or mean-square boundedness of all closed-loop signals (robust boundedness, robust ultimate boundedness), the closed-loop system tracking error …
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Predictive comparators with adaptive control
A linear predictor and adaptive control loop are added to a conventional comparator to greatly reduce the delay. A linear predictor feeds an estimated future signal to the comparator to compensate for the comparator's internal delay. On a cycle-by-cycle basis, an adaptive controller adjusts the …
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Adaptive control of hypersonic vehicles
The guidance, navigation and control of hypersonic vehicles are highly challenging tasks due to the fact that the dynamics of the airframe, propulsion system and structure are integrated and highly interactive. Such a coupling makes it difficult to model various components with a requisite degree …
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Low order multivariable adaptive control
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1996.
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Adaptive control of robot motion
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1990.
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Functional Regression and Adaptive Control
… regression method for parameter estimation and adaptive control in this dissertation. In the functional regression method, the regressors and a signal which contains the information of the unknown parameters are either determined from raw measurements or calculated as the functions of the …
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New Estimation Techniques for Adaptive Control
[abstract missing]
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Adaptive Control of Micro Air Vehicles
Although PID controllers work well on Miniature Air Vehicles (MAVs), they require tuning for each MAV. Also, they quickly lose performance in the presence of actuator failures or changes in the MAV dynamics. Adaptive control algorithms that self tune to each MAV and compensate for changes in the …
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Simulink toolbox for L1 adaptive control
… presents our work on Simulink Toolbox for L1 control. It starts with a brief idea on what parameters define an L1 controller. The document then explains how our toolbox provides an interface for selecting those parameters. Following the interface is a short review of inner working of the …
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L1-Adaptive Control for Anesthesia Delivery
… the first application of recently developed L1-adaptive control methods for the closed-loop control of anesthesia delivery during surgery. Our initial objective, described herein, is to design controllers that are robust to inter-patient variability, such that patients follow a prespecified …
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Adaptive control of Unmanned Aerial Systems
Adaptive control is considered to be one of the key enabling technologies for future high-performance, safety-critical systems such as air-breathing hypersonic vehicles. Adaptive flight control systems offer improved performance and increased robustness to uncertainties by virtue of their ability …
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Robust adaptive control of switched systems
In this thesis, robust adaptive controllers are developed for classes of switched nonlinear systems. Switched systems are those governed by differential equations, which undergo vector field switching due to sudden changes in model characteristics. Such systems arise in many applications such as …
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Adaptive Control using IIR Lattice Filters
This work is a study of a hybrid adaptive controller that blends fixed feedback control and adaptive feedback control techniques. This type of adaptive controller removes the requirement that information about the disturbance is known apriori. Additionally, the control structure is implemented in …
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Adaptive Control for Nonlinear, Time Varying Systems
… This thesis investigates the development of adaptive control laws to stabilize and control a class of nonlinear, time varying systems. Direct adaptive control architectures are implemented in order to compensate for time varying dynamics that could, for example, be caused by varying inertia …
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