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Dual Adaptive Control

Dual Adaptive Control
Author: Purusottam Mookerjee
Publisher:
Total Pages: 208
Release: 1986
Genre: Command and control systems
ISBN:

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Dual Adaptive Control

Dual Adaptive Control
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
Total Pages: 122
Release: 2018-07-17
Genre:
ISBN: 9781723035517

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The design of an actively adaptive dual controller based on an approximation of the stochastic dynamic programming equation for a multi-step horizon is presented. A dual controller that can enhance identification of the system while controlling it at the same time is derived for multi-dimensional problems. This dual controller uses sensitivity functions of the expected future cost with respect to the parameter uncertainties. A passively adaptive cautious controller and the actively adaptive dual controller are examined. In many instances, the cautious controller is seen to turn off while the latter avoids the turn-off of the control and the slow convergence of the parameter estimates, characteristic of the cautious controller. The algorithms have been applied to a multi-variable static model which represents a simplified linear version of the relationship between the vibration output and the higher harmonic control input for a helicopter. Monte Carlo comparisons based on parametric and nonparametric statistical analysis indicate the superiority of the dual controller over the baseline controller. Mookerjee, Purusottam Unspecified Center ADAPTIVE CONTROL; DESIGN ANALYSIS; HARMONIC CONTROL; HELICOPTERS; VIBRATION DAMPING; DIMENSIONS; DYNAMIC PROGRAMMING; ESTIMATES; MONTE CARLO METHOD; PARAMETER IDENTIFICATION; STATIC MODELS; STATISTICAL ANALYSIS; STOCHASTIC PROCESSES...


Adaptive Dual Control

Adaptive Dual Control
Author: Nikolai Michailovich Filatov
Publisher: Springer Science & Business Media
Total Pages: 258
Release: 2004-04-20
Genre: Technology & Engineering
ISBN: 9783540213734

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This monograph demonstrates how the performance of various well-known adaptive controllers can be improved significantly using the dual effect. The modifications to incorporate dual control are realized separately and independently of the main adaptive controller without complicating the algorithms. A new bicriterial approach for dual control is developed and applied to various types of popular linear and nonlinear adaptive controllers. Practical applications of the designed controllers to several real-time problems are presented. This monograph is the first book providing a complete exposition on the dual control problem from the inception in the early 1960s to the present state of the art aiming at students and researchers in adaptive control as well as design engineers in industry.


NASA Tech Briefs

NASA Tech Briefs
Author:
Publisher:
Total Pages: 150
Release: 1991
Genre: Technology
ISBN:

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Adaptive Control

Adaptive Control
Author: Karl J. Åström
Publisher: Courier Corporation
Total Pages: 596
Release: 2013-04-26
Genre: Technology & Engineering
ISBN: 0486319148

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Suitable for advanced undergraduates and graduate students, this overview introduces theoretical and practical aspects of adaptive control, with emphasis on deterministic and stochastic viewpoints. 1995 edition.


Applications of Adaptive Control

Applications of Adaptive Control
Author: Kumpati S. Narendra
Publisher: Elsevier
Total Pages: 569
Release: 2012-12-02
Genre: Technology & Engineering
ISBN: 0323145671

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Control Applications of Adaptive covers the proceedings of the 197 Workshop on Applications of Adaptive Control, held in Yale University. This book is organized into five parts encompassing 18 chapters that summarize the potential application of adaptive control to many practical problems. Part I contains tutorials that bring together important result s in two of the most studied approaches to adaptive control, namely, self-tuning regulators and model reference adaptive control (MRAC), with a particular emphasis on the importance of error models in the stability analysis of MRAC. Part II examines the algorithms used for adaptive signal processing, while Part III describes the types of power systems problems that could benefit from application of adaptive control and how to apply adaptive control algorithms for controlling large electric generators. Part IV highlights adaptive control in aircraft systems. This part also considers how adaptive control fell into disfavor in the flight control community, illustrating the existence of residual negative bias. The desirability of cost elimination of air data sensors in less-sophisticated flight control systems is also discussed. Part V addresses the application of process control to chemical processes and to electromechanical systems. This part also shows the robustness and superior tracking and regulation properties of model reference adaptive control applied to liquid level control. Discussion on various classes of model reference adaptive controllers in a common framework from the viewpoint of microcomputer implementation is also included. This book will be of value to control system theorists and practitioners.


Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports
Author:
Publisher:
Total Pages: 602
Release: 1995
Genre: Aeronautics
ISBN:

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Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.


Adaptive Filtering Prediction and Control

Adaptive Filtering Prediction and Control
Author: Graham C Goodwin
Publisher: Courier Corporation
Total Pages: 562
Release: 2014-05-05
Genre: Technology & Engineering
ISBN: 0486137724

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This unified survey focuses on linear discrete-time systems and explores natural extensions to nonlinear systems. It emphasizes discrete-time systems, summarizing theoretical and practical aspects of a large class of adaptive algorithms. 1984 edition.