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Integral Sliding Mode Fault Tolerant Control Schemes with Control Allocation

2013
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Release : 2013
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Book Synopsis Integral Sliding Mode Fault Tolerant Control Schemes with Control Allocation by : Mirza Tariq Hamayun

Download or read book Integral Sliding Mode Fault Tolerant Control Schemes with Control Allocation written by Mirza Tariq Hamayun. This book was released on 2013. Available in PDF, EPUB and Kindle. Book excerpt: The key attribute of a Fault Tolerant Control (FTC) system is to maintain overall system stability and acceptable performance in the face of faults and failures within the system. In this thesis new integral sliding mode (ISM) control allocation schemes for FTC are proposed, which have the potential to maintain the nominal fault free performance for the entire system response, in the face of actuator faults and even complete failures of certain actuators. The incorporation of ISM within a control allocation framework uses the measured or estimated values of the actuator effectiveness levels to redistribute the control effort among the healthy actuators to maintain closed-loop stability. This combination allows one controller to be used in both fault free as well as in fault or failure situations. A fault tolerant control allocation scheme which relies on an a posteri approach, building on an existing state feedback controller designed using only the primary actuators, is also proposed. Retro-fitting of an ISM scheme to an existing feedback controller is advantageous from an industrial perspective, because fault tolerance can be introduced without changing the existing control loops. To deal with a wider range of operating conditions, the fault tolerant features of ISM are also extended to linear parameter varying systems. A FTC scheme considering only the availability of measured system outputs is also proposed, where now the feedback controller design is based on the estimated states. In each of the ISM fault tolerant schemes proposed, a rigorous closed-loop analysis is carried out to ensure the stability of the sliding motion in the face of faults or failures. A high fidelity benchmark model of a large transport aircraft is used to demonstrate the efficacy of the new FTC schemes.

Fault Tolerant Control Schemes Using Integral Sliding Modes

2016-04-29 Technology & Engineering
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Release : 2016-04-29
Genre : Technology & Engineering
Kind : eBook
Book Rating : 389/5 ( reviews)

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Book Synopsis Fault Tolerant Control Schemes Using Integral Sliding Modes by : Mirza Tariq Hamayun

Download or read book Fault Tolerant Control Schemes Using Integral Sliding Modes written by Mirza Tariq Hamayun. This book was released on 2016-04-29. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Fault Detection and Fault-Tolerant Control Using Sliding Modes

2011-06-07 Technology & Engineering
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Release : 2011-06-07
Genre : Technology & Engineering
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Book Rating : 507/5 ( reviews)

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Book Synopsis Fault Detection and Fault-Tolerant Control Using Sliding Modes by : Halim Alwi

Download or read book Fault Detection and Fault-Tolerant Control Using Sliding Modes written by Halim Alwi. This book was released on 2011-06-07. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Fault Tolerant Sliding Mode Control Schemes with Aerospace Applications

2008
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Release : 2008
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Book Synopsis Fault Tolerant Sliding Mode Control Schemes with Aerospace Applications by : Halim Alwi

Download or read book Fault Tolerant Sliding Mode Control Schemes with Aerospace Applications written by Halim Alwi. This book was released on 2008. Available in PDF, EPUB and Kindle. Book excerpt:

Achieving Robust Fault Tolerant Control by ISM and CA

2014-06-09
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Release : 2014-06-09
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Book Rating : 605/5 ( reviews)

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Book Synopsis Achieving Robust Fault Tolerant Control by ISM and CA by : Rajaas Tahir

Download or read book Achieving Robust Fault Tolerant Control by ISM and CA written by Rajaas Tahir. This book was released on 2014-06-09. Available in PDF, EPUB and Kindle. Book excerpt: In this book, using a theoretical perspective, a design procedure is developed, to consider an innovative blend of integral sliding mode (ISM) control and control allocation (CA). An advantage of using this technique is that the structure of the ISM controller does not need to be altered during faults and failures. Maximum level of robustness of any safety critical systems can be achieved using this scheme and to make it fault tolerant. The efficiency of the proposed scheme is checked in simulation on the Admire Benchmark Model which is small rigid fighter aircraft with a delta canard configuration.

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