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Author :
Release : 2012
Genre :
Kind : eBook
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Book Synopsis Two New Extensions to L1 Adaptive Control Theory by :
Download or read book Two New Extensions to L1 Adaptive Control Theory written by . This book was released on 2012. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jiaxing Che
Release : 2016
Genre : Electronic dissertations
Kind : eBook
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Book Synopsis Extension of L1 Adaptive Control with Applications by : Jiaxing Che
Download or read book Extension of L1 Adaptive Control with Applications written by Jiaxing Che. This book was released on 2016. Available in PDF, EPUB and Kindle. Book excerpt: Adaptive control is the control method used by a controller which adapt to a system with unknown or varying parameters. As a newly developed technique, L1 adaptive control has drawn increased attention in past decades. The key feature of L1 adaptive control architecture is guaranteed robustness in the presence of fast adaptation. With L1 adaptive control architecture, fast adaptation appears to be beneficial both for performance and robustness, while the trade-off between the two is resolved via the selection of the underlying filtering structure. The latter can be addressed via conventional methods from classical and robust control. Moreover, the performance bounds of L1 adaptive control architectures can be analyzed to determine the extent of the modeling of the system that is required for the given set of hardware. The main contribution of this dissertation is to extend the framework of L1 adaptive control theory and applied in various of applications. It can be summarized with 3 different parts: The first one is the extension of L1 adaptive to time-varying system and non-minimum phase system by using eigenvalue assignment method. This approach has been demonstrated by both theoretical models as well as high fidelity models such as flexible wing aircraft model from NASA and also the supersonic glider model developed from the supersonic lab in Austria. The 2nd part focuses on filter bandwidth adaptation in the L1 adaptive control architecture. The stability condition of the low-pass filter in control is relaxed by introducing an additional Lyapunov-based adaptation mechanism which results in a more systematic design with minimized tuning efforts. Adaptability for arbitrarily large nonlinear time-varying uncertainties without redesign parameters. The overall system is a non-LTI design even in the limiting case. The 3rd part introduces the concept of predictive horizon and online optimization into L1 adaptive control. This approach enables L1 adaptive control to solve the output limitation even for the non-minimum phase system.
Author : Naira Hovakimyan
Release : 2010-01-01
Genre : Science
Kind : eBook
Book Rating : 372/5 ( reviews)
Book Synopsis L1 Adaptive Control Theory by : Naira Hovakimyan
Download or read book L1 Adaptive Control Theory written by Naira Hovakimyan. This book was released on 2010-01-01. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive overview of the recently developed L1 adaptive control theory, including detailed proofs of the main results. The key feature of the L1 adaptive control theory is the decoupling of adaptation from robustness. The architectures of L1 adaptive control theory have guaranteed transient performance and robustness in the presence of fast adaptation, without enforcing persistent excitation, applying gain-scheduling, or resorting to high-gain feedback.
Author : John Valasek
Release : 2012
Genre : Technology & Engineering
Kind : eBook
Book Rating : 979/5 ( reviews)
Book Synopsis Advances in Intelligent and Autonomous Aerospace Systems by : John Valasek
Download or read book Advances in Intelligent and Autonomous Aerospace Systems written by John Valasek. This book was released on 2012. Available in PDF, EPUB and Kindle. Book excerpt: Research advances in embedded computational intelligence, communication, control, and new mechanisms for sensing, actuation, and adaptation hold the promise to transform aerospace. The result will be air and space vehicles, propulsion systems, exploration systems, and vehicle management systems that respond more quickly, provide large-scale distributed coordination, work in dangerous or inaccessible environments, and augment human capabilities. Advances in Intelligent and Autonomous Aerospace Systems seeks to provide both the aerospace researcher and the practicing aerospace engineer with an exposition on the latest innovative methods and approaches that focus on intelligent and autonomous aerospace systems. The chapters are written by leading researchers in this field, and include ideas, directions, and recent results on intelligent aerospace research issues with a focus on dynamics and control, systems engineering, and aerospace design. The content on uncertainties, modeling of large and highly non-linear complex systems, robustness, and adaptivity is intended to be useful in both the sub-system and the overall system level design and analysis of various aerospace vehicles.A broad spectrum of methods and approaches are presented, including: * Bio-Inspiration * Fuzzy Logic * Genetic Algorithms * Q-Learning * Markov Decision Processes * Approximate Dynamic Programming * Artificial Neural Networks * Probabilistic Maps * Multi-Agent Systems * Kalman, particle, and confidence filtering
Author : Hanmin Lee
Release : 2017
Genre :
Kind : eBook
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Book Synopsis L1 Adaptive Control for Nonlinear and Non-square Multivariable Systems by : Hanmin Lee
Download or read book L1 Adaptive Control for Nonlinear and Non-square Multivariable Systems written by Hanmin Lee. This book was released on 2017. Available in PDF, EPUB and Kindle. Book excerpt:
