Application Of Sliding Mode Methods To The Design Of Reconfigurable Flight Control Systems

Author : Scott R. Wells
Publisher : Unknown
Page : 624 pages
File Size : 55,9 Mb
Release : 2002
Category : Technology & Engineering
ISBN : UCAL:X65999

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Application of Sliding Mode Methods to the Design of Reconfigurable Flight Control Systems by Scott R. Wells Pdf

Observer-based sliding mode control is investigated for application to aircraft reconfigurable flight control. An overview of reconfigurable flight control is given, including a review of the current state-of-the-art within the subdisciplines of fault detection parameter identification, adaptive control schemes, and dynamic control allocation. Of the adaptive control methods reviewed, sliding mode control (SMC) appears promising due its property of invariance to matched uncertainty. An overview of SMC is given and its properties are demonstrated. Sliding mode methods, however, are difficult to implement because unmodeled parasitic dynamics cause immediate and severe instability. This presents a challenge for all practical applications with limited bandwidth actuators. One method to deal with parasitic dynamics is the use of an asymptotic observer. Observer-based SMC is investigated, and a method for selecting observer gains is offered. An additional method for shaping the feedback loop using a filter is also developed. It is shown that this SMC prefilter is equivalent to a form of model reference hedging. A complete design procedure is given which takes advantage of the sliding mode boundary layer to recast the SMC as a linear control law. Frequency domain loop shaping is then used to design the sliding manifold. Finally, three aircraft applications are demonstrated. An F-18/HARV is used to demonstrate SISO and MIMO designs. The third application is a linear six degree-of-freedom advanced tailless fighter model. The observer-based SMC is seen to provide excellent tracking with superior robustness to parameter changes and actuator failures.

Author : Anonim
Publisher : Unknown
Page : 0 pages
File Size : 55,7 Mb
Release : 2002
Category : Electronic
ISBN : OCLC:946243350

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Sliding Mode Control Applied to Reconfigurable Flight Control Design by Anonim Pdf

Sliding mode control is applied to the design of flight control systems capable of operating with limited bandwidth actuators and in the presence of significant damage to the airframe and/or control effector actuators. Although inherently robust, sliding mode control algorithms have been hampered by their sensitivity to the effects of parasitic unmodeled dynamics, such as those associated with actuators and structural modes. It is known that asymptotic observers can alleviate this sensitivity while still allowing the system to exhibit significant robustness. This approach is demonstrated. The selection of the sliding manifold as well as the interpretation of the resulting linear design is accomplished in the frequency domain. The design technique is exercised on a pitch-axis controller for a simple model of the High Angle of Attack F-18 vehicle via computer simulation. A model-based tool is used for predicting task-oriented handling qualities and pilot-induced oscillation tendencies for the sliding mode controller operating with a damaged vehicle.

Author : Ahmad Taher Azar,Quanmin Zhu
Publisher : Springer
Page : 590 pages
File Size : 51,7 Mb
Release : 2014-11-01
Category : Technology & Engineering
ISBN : 9783319111735

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Advances and Applications in Sliding Mode Control systems by Ahmad Taher Azar,Quanmin Zhu Pdf

This book describes the advances and applications in Sliding mode control (SMC) which is widely used as a powerful method to tackle uncertain nonlinear systems. The book is organized into 21 chapters which have been organised by the editors to reflect the various themes of sliding mode control. The book provides the reader with a broad range of material from first principles up to the current state of the art in the area of SMC and observation presented in a clear, matter-of-fact style. As such it is appropriate for graduate students with a basic knowledge of classical control theory and some knowledge of state-space methods and nonlinear systems. The resulting design procedures are emphasized using Matlab/Simulink software.

Author : Zhengyu Song
Publisher : Springer
Page : 246 pages
File Size : 47,7 Mb
Release : 2018-04-19
Category : Technology & Engineering
ISBN : 9789811087127

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The Test and Launch Control Technology for Launch Vehicles by Zhengyu Song Pdf

This book presents technologies and solutions related to the test and launch control of rockets and other vehicles, and offers the first comprehensive and systematic introduction to the contributions of the Chinese Long March (Chang Zheng in Chinese, or abbreviated as CZ) rockets in this field. Moreover, it discusses the role of this technology in responsive, reliable, and economical access to space, which is essential for the competitiveness of rockets. The need for rapid development of the aerospace industry for both governmental and commercial projects is addressed. This book is a valuable reference resource for practitioners, and many examples and resources are included, not only from Chinese rockets but also from many other vehicles. It covers guidelines, technologies, and solutions on testing and launch control before rocket takeoff, covering equipment-level testing, system-level testing, simulation tests, etc.

Author : Guillaume J. J. Ducard
Publisher : Springer Science & Business Media
Page : 268 pages
File Size : 47,8 Mb
Release : 2009-05-14
Category : Technology & Engineering
ISBN : 9781848825611

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Fault-tolerant Flight Control and Guidance Systems by Guillaume J. J. Ducard Pdf

This book offers a complete overview of fault-tolerant flight control techniques. Discussion covers the necessary equations for the modeling of small UAVs, a complete system based on extended Kalman filters, and a nonlinear flight control and guidance system.

Author : Mirza Tariq Hamayun,Christopher Edwards,Halim Alwi
Publisher : Springer
Page : 199 pages
File Size : 40,5 Mb
Release : 2016-04-29
Category : Technology & Engineering
ISBN : 9783319322384

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Fault Tolerant Control Schemes Using Integral Sliding Modes by Mirza Tariq Hamayun,Christopher Edwards,Halim Alwi Pdf

The key attribute of a Fault Tolerant Control (FTC) system is its ability to maintain overall system stability and acceptable performance in the face of faults and failures within the feedback system. In this book Integral Sliding Mode (ISM) Control Allocation (CA) schemes for FTC are described, which have the potential to maintain close to nominal fault-free performance (for the entire system response), in the face of actuator faults and even complete failures of certain actuators. Broadly an ISM controller based around a model of the plant with the aim of creating a nonlinear fault tolerant feedback controller whose closed-loop performance is established during the design process. The second approach involves retro-fitting an ISM scheme to an existing feedback controller to introduce fault tolerance. This may be advantageous from an industrial perspective, because fault tolerance can be introduced without changing the existing control loops. A high fidelity benchmark model of a large transport aircraft is used to demonstrate the efficacy of the FTC schemes. In particular a scheme based on an LPV representation has been implemented and tested on a motion flight simulator.

Author : Damiano Rotondo
Publisher : Springer
Page : 255 pages
File Size : 43,5 Mb
Release : 2017-10-14
Category : Technology & Engineering
ISBN : 9783319629025

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Advances in Gain-Scheduling and Fault Tolerant Control Techniques by Damiano Rotondo Pdf

This thesis reports on novel methods for gain-scheduling and fault tolerant control (FTC). It begins by analyzing the connection between the linear parameter varying (LPV) and Takagi-Sugeno (TS) paradigms. This is then followed by a detailed description of the design of robust and shifting state-feedback controllers for these systems. Furthermore, it presents two approaches to fault-tolerant control: the first is based on a robust polytopic controller design, while the second involves a reconfiguration of the reference model and the addition of virtual actuators into the loop. Inaddition the thesis offers a thorough review of the state-of-the art in gain scheduling and fault-tolerant control, with a special emphasis on LPV and TS systems.

Author : John J. Burken
Publisher : Unknown
Page : 22 pages
File Size : 43,8 Mb
Release : 1999
Category : Flight control
ISBN : NASA:31769000628019

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Reconfigurable Flight Control Designs with Application to the X-33 Vehicle by John J. Burken Pdf

Two methods for control system reconfiguration have been investigated. The first method is a robust servomechanism control approach (optimal tracking problem) that is a generalization of the classical proportional-plus-integral control to multiple input-multiple output systems. The second method is a control-allocation approach based on a quadratic programming formulation. A globally convergent fixed-point iteration algorithm has been developed to make onboard implementation of this method feasible. These methods have been applied to reconfigurable entry flight control design for the X-33 vehicle. Examples presented demonstrate simultaneous tracking of angle-of-attack and roll angle commands during failures of the right body flap actuator. Although simulations demonstrate success of the first method in most cases, the control-allocation method appears to provide uniformly better performance in all cases.

Author : Christopher Edwards,Thomas Lombaerts,Hafid Smaili
Publisher : Springer
Page : 560 pages
File Size : 55,8 Mb
Release : 2010-04-18
Category : Technology & Engineering
ISBN : 9783642116902

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Fault Tolerant Flight Control by Christopher Edwards,Thomas Lombaerts,Hafid Smaili Pdf

Written by leading experts in the field, this book provides the state-of-the-art in terms of fault tolerant control applicable to civil aircraft. The book consists of five parts and includes online material.

Author : Travis Kenneth Vetter
Publisher : Unknown
Page : 300 pages
File Size : 44,5 Mb
Release : 2002
Category : Electronic
ISBN : UCAL:X66271

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Sliding-mode Control Applied for Robust Control of a Highly Unstable Aircraft by Travis Kenneth Vetter Pdf

Author : Halim Alwi,Christopher Edwards,Chee Pin Tan
Publisher : Springer Science & Business Media
Page : 340 pages
File Size : 55,7 Mb
Release : 2011-06-07
Category : Technology & Engineering
ISBN : 9780857296504

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Fault Detection and Fault-Tolerant Control Using Sliding Modes by Halim Alwi,Christopher Edwards,Chee Pin Tan Pdf

Fault Detection and Fault-tolerant Control Using Sliding Modes is the first text dedicated to showing the latest developments in the use of sliding-mode concepts for fault detection and isolation (FDI) and fault-tolerant control in dynamical engineering systems. It begins with an introduction to the basic concepts of sliding modes to provide a background to the field. This is followed by chapters that describe the use and design of sliding-mode observers for FDI using robust fault reconstruction. The development of a class of sliding-mode observers is described from first principles through to the latest schemes that circumvent minimum-phase and relative-degree conditions. Recent developments have shown that the field of fault tolerant control is a natural application of the well-known robustness properties of sliding-mode control. A family of sliding-mode control designs incorporating control allocation, which can deal with actuator failures directly by exploiting redundancy, is presented. Various realistic case studies, specifically highlighting aircraft systems and including results from the implementation of these designs on a motion flight simulator, are described. A reference and guide for researchers in fault detection and fault-tolerant control, this book will also be of interest to graduate students working with nonlinear systems and with sliding modes in particular. Advances in Industrial Control aims to report and encourage the transfer of technology in control engineering. The rapid development of control technology has an impact on all areas of the control discipline. The series offers an opportunity for researchers to present an extended exposition of new work in all aspects of industrial control.

Author : Plamen Angelov
Publisher : John Wiley & Sons
Page : 381 pages
File Size : 53,8 Mb
Release : 2012-03-16
Category : Technology & Engineering
ISBN : 9781119967842

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Sense and Avoid in UAS by Plamen Angelov Pdf

There is increasing interest in the potential of UAV (Unmanned Aerial Vehicle) and MAV (Micro Air Vehicle) technology and their wide ranging applications including defence missions, reconnaissance and surveillance, border patrol, disaster zone assessment and atmospheric research. High investment levels from the military sector globally is driving research and development and increasing the viability of autonomous platforms as replacements for the remotely piloted vehicles more commonly in use. UAV/UAS pose a number of new challenges, with the autonomy and in particular collision avoidance, detect and avoid, or sense and avoid, as the most challenging one, involving both regulatory and technical issues. Sense and Avoid in UAS: Research and Applications covers the problem of detect, sense and avoid in UAS (Unmanned Aircraft Systems) in depth and combines the theoretical and application results by leading academics and researchers from industry and academia. Key features: Presents a holistic view of the sense and avoid problem in the wider application of autonomous systems Includes information on human factors, regulatory issues and navigation, control, aerodynamics and physics aspects of the sense and avoid problem in UAS Provides professional, scientific and reliable content that is easy to understand, and Includes contributions from leading engineers and researchers in the field Sense and Avoid in UAS: Research and Applications is an invaluable source of original and specialised information. It acts as a reference manual for practising engineers and advanced theoretical researchers and also forms a useful resource for younger engineers and postgraduate students. With its credible sources and thorough review process, Sense and Avoid in UAS: Research and Applications provides a reliable source of information in an area that is fast expanding but scarcely covered.

Author : Maryam Bakhtiari-Nejad
Publisher : Unknown
Page : 154 pages
File Size : 41,6 Mb
Release : 2006
Category : Electronic
ISBN : UCAL:X74651

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Sliding Mode Control of a Nonlinear Ducted-fan UAV Model by Maryam Bakhtiari-Nejad Pdf

Author : Andrzej Bartoszewicz
Publisher : BoD – Books on Demand
Page : 116 pages
File Size : 48,5 Mb
Release : 2017-06-28
Category : Science
ISBN : 9789535132714

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Recent Developments in Sliding Mode Control by Andrzej Bartoszewicz Pdf

The main purpose of control engineering is to steer the regulated plant in such a way that it operates in a required manner. The desirable performance of the plant should be obtained despite the unpredictable influence of the environment on the control system and no matter if the plant parameters are precisely known. Even though the parameters may change with time and load, still the system should preserve its nominal properties and ensure the required behavior of the plant. In other words, the principal objective of control engineering is to design systems that are robust with respect to external disturbances and modeling uncertainty. This objective may be very well achieved using the sliding mode technique, which is the subject of this book.

Author : Marcin Witczak
Publisher : Springer Science & Business Media
Page : 229 pages
File Size : 46,9 Mb
Release : 2013-12-11
Category : Technology & Engineering
ISBN : 9783319030142

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Fault Diagnosis and Fault-Tolerant Control Strategies for Non-Linear Systems by Marcin Witczak Pdf

This book presents selected fault diagnosis and fault-tolerant control strategies for non-linear systems in a unified framework. In particular, starting from advanced state estimation strategies up to modern soft computing, the discrete-time description of the system is employed Part I of the book presents original research results regarding state estimation and neural networks for robust fault diagnosis. Part II is devoted to the presentation of integrated fault diagnosis and fault-tolerant systems. It starts with a general fault-tolerant control framework, which is then extended by introducing robustness with respect to various uncertainties. Finally, it is shown how to implement the proposed framework for fuzzy systems described by the well-known Takagi–Sugeno models. This research monograph is intended for researchers, engineers, and advanced postgraduate students in control and electrical engineering, computer science, as well as mechanical and chemical engineering.