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Author: C. Hajiyev Publisher: Springer Science & Business Media ISBN: 1441991662 Category : Technology & Engineering Languages : en Pages : 361
Book Description
The problem of fault diagnosis and reconfigurable control is a new and actually developing field of science and engineering. The subject becomes more interesting since there is an increasing demand for the navigation and control systems of aerospace vehicles, automated actuators etc. to be more safe and reliable. Nowadays, the problems of fault detection and isolation and reconfigurable control attract the attention the scientists in the world. The subject is emphasized in the recent international congresses such as IF AC World Congresses (San Francisco-1996, Beijing-1999, and Barcelona-2002) and lMEKO World Congresses (Tampere-1997, Osaka-1999, Vienna-2000), and also in the international conferences on fault diagnosis such as SAFEPROCESS Conferences (Hull-1997, Budapest-2000). The presented methods in the book are based on linear and nonlinear dynamic mathematical models of the systems. Technical objects and systems stated by these models are very large, and include various control systems, actuators, sensors, computer systems, communication systems, and mechanical, hydraulic, pneumatic, electrical and electronic devices. The analytical fault diagnosis techniques of these objects have been developed for several decades. Many of those techniques are based on the use of the results of modem control theory. This is natural, because it is known that fault diagnosis process in control systems is considered as a part of general control process. xxii In organization of fault diagnosis of control systems, the use of the concepts and methods of modem control theory including concepts of state space, modeling, controllability, observability, estimation, identification, and filtering is very efficient.
Author: C. Hajiyev Publisher: Springer Science & Business Media ISBN: 1441991662 Category : Technology & Engineering Languages : en Pages : 361
Book Description
The problem of fault diagnosis and reconfigurable control is a new and actually developing field of science and engineering. The subject becomes more interesting since there is an increasing demand for the navigation and control systems of aerospace vehicles, automated actuators etc. to be more safe and reliable. Nowadays, the problems of fault detection and isolation and reconfigurable control attract the attention the scientists in the world. The subject is emphasized in the recent international congresses such as IF AC World Congresses (San Francisco-1996, Beijing-1999, and Barcelona-2002) and lMEKO World Congresses (Tampere-1997, Osaka-1999, Vienna-2000), and also in the international conferences on fault diagnosis such as SAFEPROCESS Conferences (Hull-1997, Budapest-2000). The presented methods in the book are based on linear and nonlinear dynamic mathematical models of the systems. Technical objects and systems stated by these models are very large, and include various control systems, actuators, sensors, computer systems, communication systems, and mechanical, hydraulic, pneumatic, electrical and electronic devices. The analytical fault diagnosis techniques of these objects have been developed for several decades. Many of those techniques are based on the use of the results of modem control theory. This is natural, because it is known that fault diagnosis process in control systems is considered as a part of general control process. xxii In organization of fault diagnosis of control systems, the use of the concepts and methods of modem control theory including concepts of state space, modeling, controllability, observability, estimation, identification, and filtering is very efficient.
Author: Jayalakshmi Nagam Publisher: ISBN: 9780224394017 Category : Computers Languages : en Pages : 0
Book Description
Fault Identification for Real Time Flight Controller Reconfiguration refers to the process of detecting, diagnosing, and mitigating faults in a flight control system in real-time. This is crucial for ensuring the safety and performance of aircraft. The process involves monitoring sensor data and analyzing it to detect any anomalies or failures in the system. Once a fault is detected, a diagnosis is performed to determine the cause of the fault and the appropriate reconfiguration strategy is implemented to mitigate its effects. This can include switching to redundant systems, adjusting control parameters, or other adaptive control techniques. The goal is to maintain the safe and stable operation of the aircraft while minimizing any impact on performance. Flight controller reconfiguration refers to the process of adapting the control system of an aircraft to changing conditions or system failures. The goal is to maintain the safe and stable operation of the aircraft while minimizing any impact on performance. This can be achieved through a variety of methods such as switching to redundant systems, adjusting control parameters, or implementing other adaptive control techniques. The process of reconfiguration may be triggered by a variety of factors, including system failures, changes in flight conditions, or the need to optimize performance. The reconfiguration process is typically performed in real-time and can be based on both model-based and data-driven approaches. A key aspect of flight controller reconfiguration is the ability to detect and diagnose faults in the system and to implement the appropriate reconfiguration strategy to mitigate their effects. Fault Tolerant Flight Control (FTFC) systems deal with the detection and diagnosis of faults and look at the task of regaining control in the presence of the fault. Some faults are difficult to detect with the onboard monitoring systems, with the result that these faults endanger the safety and reliability of an aircraft. The study of improvement in safety, redundancy, and adapting the Flight Control Laws (FCL) after the occurrence of faults has fascinated several investigators in the previous two decades. The literature study illustrates different fault diagnosis and FTFC approaches. The main research direction is to detect and isolate fault reliably, carry out real-time identification of the plant, and real-time control law (CLAW) reconfiguration. The main contribution of this thesis is towards these aspects. In this chapter, the basic terminologies are explained. The research work carried out in this thesis is in the area of FTFC systems.
Author: Christopher Edwards Publisher: Springer Science & Business Media ISBN: 3642116892 Category : Technology & Engineering Languages : en Pages : 589
Book Description
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: Guillaume J. J. Ducard Publisher: Springer Science & Business Media ISBN: 1848825617 Category : Technology & Engineering Languages : en Pages : 268
Book Description
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: Scott R. Wells Publisher: ISBN: Category : Technology & Engineering Languages : en Pages : 624
Book Description
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: Jitendra R. Raol Publisher: CRC Press ISBN: 1000755649 Category : Technology & Engineering Languages : en Pages : 835
Book Description
Going beyond the traditional field of robotics to include other mobile vehicles, this reference and "recipe book" describes important theoretical concepts, techniques, and applications that can be used to build truly mobile intelligent autonomous systems (MIAS). With the infusion of neural networks, fuzzy logic, and genetic algorithm paradigms for MIAS, it blends modeling, sensors, control, estimation, optimization, signal processing, and heuristic methods in MIAS and robotics, and includes examples and applications throughout. Offering a comprehensive view of important topics, it helps readers understand the subject from a system-theoretic and practical point of view.
Author: C. Hajiyev
Author: C. Hajiyev
Author: Irene Ruiz Gabernet
Author: Chingiz Hajiyev
Author: Jayalakshmi Nagam
Author: Markus Kaminski
Author: Christopher Edwards
Author: Ellen R. Mayhew
Author: Guillaume J. J. Ducard
Author: Scott R. Wells
Author: Jitendra R. Raol