Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Diagnostics And Control Of Gas Turbines Through System Identification
Download Diagnostics And Control Of Gas Turbines Through System Identification full books in PDF, epub, and Kindle. Read online Diagnostics And Control Of Gas Turbines Through System Identification ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Diagnostics and Control of Gas Turbines Through System Identification by : Chad M. Holcomb
Download or read book Diagnostics and Control of Gas Turbines Through System Identification written by Chad M. Holcomb and published by . This book was released on 2015 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation, system identification methods are applied to characterize the dynamic system behavior of gas turbines for use in diagnostics, condition monitoring, and control design. The application examples are motivated by real-world engineering challenges with industrial gas turbines. Firstly, a method is proposed to represent the nonlinear interconnection of the fuel control system and gas turbine using a block Hammerstein model. A new iterative gradient descent prediction error minimization method is proposed to identify a low order dynamic model of the gas turbine and a parametrized static nonlinear mapping. The identified nonlinear mapping is demonstrated to capture fuel valve contamination. Secondly, a modification to existing subspace system identification methods is formulated to permit their application to multiple concatenated, but non-contiguous data sets, which jointly can be sufficiently rich for identification while individual records are not. This is a break from traditional system identification, where one uses a single contiguous synchronous input-output record. In addition, a set of simple sufficient conditions for identifiability are derived. In tandem, these developments increase the intrinsic value of archival data as it enables the construction of a sufficiently informative data set for dynamic modeling. These conditions represent the primary theoretical contribution of this dissertation. The identified models are suitable for use in condition monitoring methods that are based on characterizations of transient behavior. Finally, subspace system identification is applied for identification of control-relevant MIMO generalized plant models of the closed-loop gas turbine system in feedback control at a series of discrete operating points. An operating point dependent scaling method is proposed to enable a single nominal linear plant model to capture the dynamics of the closed-loop system. When combined, the procedure enables design of an outer loop controller to improve the disturbance rejection performance of the system. The method is demonstrated to significantly improve the transient load rejection of fuel and airflow control of an existing low emissions industrial gas turbine.
Book Synopsis Dynamic Modelling of Gas Turbines by : Gennady G. Kulikov
Download or read book Dynamic Modelling of Gas Turbines written by Gennady G. Kulikov and published by Springer Science & Business Media. This book was released on 2013-12-11 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whereas other books in this area stick to the theory, this book shows the reader how to apply the theory to real engines. It provides access to up-to-date perspectives in the use of a variety of modern advanced control techniques to gas turbine technology.
Book Synopsis Modeling of Turbomachines for Control and Diagnostic Applications by : Igor Loboda
Download or read book Modeling of Turbomachines for Control and Diagnostic Applications written by Igor Loboda and published by BoD – Books on Demand. This book was released on 2020-05-27 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents new studies in the area of turbomachine mathematical modeling with a focus on models applied to developing engine control and diagnostic systems. The book contains one introductory and four main chapters. The introductory chapter describes the area of modeling of gas and wind turbines and shows the demand for further improvement of the models. The first three main chapters offer particular improvements in gas turbine modeling. First, a novel methodology for the modeling of engine starting is presented. Second, a thorough theoretical comparative analysis is performed for the models of engine internal gas capacities, and practical recommendations are given on model applications, in particular for engine control purposes. Third, multiple algorithms for calculating important unmeasured parameters for engine diagnostics are proposed and compared. It is proven that the best algorithms allow accurate prognosis of engine remaining lifetime.The field of wind turbine modeling is presented in the last main chapter. It introduces a general-purpose model that describes both aerodynamic and electric parts of a wind power plant. Such a detailed physics-based model will help with the development of more accurate control and diagnostic systems.In this way, this book includes four new studies in the area of gas and wind turbine modeling. These studies will be interesting and useful for specialists in turbine engine control and diagnostics.
Book Synopsis Gas Turbines Modeling, Simulation, and Control by : Hamid Asgari
Download or read book Gas Turbines Modeling, Simulation, and Control written by Hamid Asgari and published by CRC Press. This book was released on 2015-10-16 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas Turbines Modeling, Simulation, and Control: Using Artificial Neural Networks provides new approaches and novel solutions to the modeling, simulation, and control of gas turbines (GTs) using artificial neural networks (ANNs). After delivering a brief introduction to GT performance and classification, the book:Outlines important criteria to consi
Book Synopsis Fault Diagnosis and Estimation of Dynamical Systems with Application to Gas Turbines by : Esmaeil Naderi
Download or read book Fault Diagnosis and Estimation of Dynamical Systems with Application to Gas Turbines written by Esmaeil Naderi and published by . This book was released on 2017 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis contributes and provides solutions to the problem of fault diagnosis and estimation from three different perspectives which are i) fault diagnosis of nonlinear systems using nonlinear multiple model approach, ii) inversion-based fault estimation in linear systems, and iii) data-driven fault diagnosis and estimation in linear systems. The above contributions have been demonstrated to the gas turbines as one of the most important engineering systems in the power and aerospace industries. The proposed multiple model approach is essentially a hierarchy of nonlinear Kalman filters utilized as detection filters. A nonlinear mathematical model for a gas turbines is developed and verified. The fault vector is defined using the Gas Path Analysis approach. The nonlinear Kalman filters that correspond to the defined single or concurrent fault modes provide the conditional probabilities associated with each fault mode using the Bayes' law. The current fault mode is then determined based on the maximum probability criteria. The performance of both Extended Kalman Filters (EKF) and Unscented Kalman Filters (UKF) are investigated and compared which demonstrates that the UKF outperforms the EKF for this particular application.The problem of fault estimation is increasingly receiving more attention due to its practical importance. Fault estimation is closely related to the problem of linear systems inversion. This thesis includes two contributions for the stable inversion of non-minimum phase systems. First, a novel methodology is proposed for direct estimation of unknown inputs by using only measurements of either minimum or non-minimum phase systems as well as systems with transmission zeros on the unit circle. A dynamic filter is then identified whose poles coincide with the transmission zeros of the system. A feedback is then introduced to stabilize the above filter dynamics as well as provide an unbiased estimation of the unknown input. The methodology is then applied to the problem of fault estimation and has been shown that the proposed inversion filter is unbiased for certain categories of faults. Second, a solution for unbiased reconstruction of general inputs is proposed. It is based on designing an unknown input observer (UIO) that provides unbiased estimation of the minimum phase states of the system. The reconstructed minimum phase states serve then as inputs for reconstruction of the non-minimum phase states. The reconstruction error for non-minimum phase states exponentially decrease as the estimation delay is increased. Therefore, an almost perfect reconstruction can be achieved by selecting the delay to be sufficiently large. The proposed inversion scheme is then applied to the output-tracking control problem. An important practical challenge is the fact that engineers rarely have a detailed and accurate mathematical model of complex engineering systems such as gas turbines. Consequently, one can find a trend towards data-driven approaches in many disciplines, including fault diagnosis. In this thesis, explicit state-space based fault detection, isolation and estimation filters are proposed that are directly identified from only the system input-output (I/O) measurements and through the system Markov parameters. The proposed procedures do not involve a reduction step and do not require identification of the system extended observability matrix or its left null space. Therefore, the performance of the proposed filters is directly connected to and linearly dependent on the errors in the Markov parameters estimation process. The estimation error dynamics is then derived in terms of the Markov parameters identification errors and directly synthesized from the healthy system I/O data. Consequently, the estimation errors have been effectively compensated for. The proposed data-driven scheme requires the persistently exciting condition for healthy input data which is not practical for certain real life applications and in particular to gas turbine engines. To address this issue, a robust methodology for Markov parameters estimation using frequency response data is developed. Finally, the performance of the proposed data-driven approach is comprehensively evaluated for the fault diagnosis and estimation problems in the gas turbine engines.
Book Synopsis Gas Turbine Diagnostics by : Ranjan Ganguli
Download or read book Gas Turbine Diagnostics written by Ranjan Ganguli and published by CRC Press. This book was released on 2012-12-13 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: Widely used for power generation, gas turbine engines are susceptible to faults due to the harsh working environment. Most engine problems are preceded by a sharp change in measurement deviations compared to a baseline engine, but the trend data of these deviations over time are contaminated with noise and non-Gaussian outliers. Gas Turbine Diagnostics: Signal Processing and Fault Isolation presents signal processing algorithms to improve fault diagnosis in gas turbine engines, particularly jet engines. The algorithms focus on removing noise and outliers while keeping the key signal features that may indicate a fault. The book brings together recent methods in data filtering, trend shift detection, and fault isolation, including several novel approaches proposed by the author. Each method is demonstrated through numerical simulations that can be easily performed by the reader. Coverage includes: Filters for gas turbines with slow data availability Hybrid filters for engines equipped with faster data monitoring systems Nonlinear myriad filters for cases where monitoring of transient data can lead to better fault detection Innovative nonlinear filters for data cleaning developed using optimization methods An edge detector based on gradient and Laplacian calculations A process of automating fault isolation using a bank of Kalman filters, fuzzy logic systems, neural networks, and genetic fuzzy systems when an engine model is available An example of vibration-based diagnostics for turbine blades to complement the performance-based methods Using simple examples, the book describes new research tools to more effectively isolate faults in gas turbine engines. These algorithms may also be useful for condition and health monitoring in other systems where sharp changes in measurement data indicate the onset of a fault.
Book Synopsis Efficiency, Performance and Robustness of Gas Turbines by : Konstantin Volkov
Download or read book Efficiency, Performance and Robustness of Gas Turbines written by Konstantin Volkov and published by BoD – Books on Demand. This book was released on 2012-04-04 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: A wide range of issues related to analysis of gas turbines and their engineering applications are considered in the book. Analytical and experimental methods are employed to identify failures and quantify operating conditions and efficiency of gas turbines. Gas turbine engine defect diagnostic and condition monitoring systems, operating conditions of open gas turbines, reduction of jet mixing noise, recovery of exhaust heat from gas turbines, appropriate materials and coatings, ultra micro gas turbines and applications of gas turbines are discussed. The open exchange of scientific results and ideas will hopefully lead to improved reliability of gas turbines.
Book Synopsis Steam Turbine Generators Process Control and Diagnostics by : Udo Sill
Download or read book Steam Turbine Generators Process Control and Diagnostics written by Udo Sill and published by Publicis. This book was released on 1996-12-31 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: To achieve the highest level of availability and cost-effectiveness the steam turbine generator set in power plants must be operated professionally at optimum thermodynamic performance. The modern I&C equipment (Instrumentation & Control) of Siemens Power Generation (KWU) and the on-line diagnostic system DIGEST help accomplish this by providing a comprehensive overview of the operating status and by analyzing the condition of the steam turbine generator set during operation. This equipment enables the early detection of incipient faults and lowers the burden of the operating crew. This book provides a broad overview of the state-of-the-art of I&C equipment and the use of diagnostic systems. The target group for this book are power plant operators, planning engineers and consultants.
Book Synopsis A Hybrid Approach for Power Plant Fault Diagnostics by : Tamiru Alemu Lemma
Download or read book A Hybrid Approach for Power Plant Fault Diagnostics written by Tamiru Alemu Lemma and published by Springer. This book was released on 2017-12-30 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a hybrid approach to fault detection and diagnostics. It presents a detailed analysis related to practical applications of the fault detection and diagnostics framework, and highlights recent findings on power plant nonlinear model identification and fault diagnostics. The effectiveness of the methods presented is tested using data acquired from actual cogeneration and cooling plants (CCPs). The models presented were developed by applying Neuro-Fuzzy (NF) methods. The book offers a valuable resource for researchers and practicing engineers alike.
Book Synopsis Application of System Identification Techniques to Turbine Engine Post- Stall Test and Evaluation by :
Download or read book Application of System Identification Techniques to Turbine Engine Post- Stall Test and Evaluation written by and published by . This book was released on 1990 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: System identification is valuable for the estimation of gas turbine engine models because high fidelity models of jet engines are very useful for performance validation and because accurate models can aid in the understanding and prediction of jet engine phenomenon such as stall and surge. This report is an overview of techniques for system identification of gas turbine engine models. The emphasis in this report is on an overview of the set of techniques, solution of the nonlinear problem, and practical effectiveness rather than theoretical elegance. A detailed description of the operation of the SCIDNT parameter estimation code, which was developed by Systems Control Technology, Inc., is included. Although system identification is often regarded as a set of techniques for data processing, the overall technology has a broader scope which includes test planning, instrumentation specification, and choice of mathematical model structure, as well as the numerical methods of parameter estimation and the statistical techniques of interpreting results. These topics are all addressed herein.
Book Synopsis System Identification of Gas Turbines by : David Charles Hill
Download or read book System Identification of Gas Turbines written by David Charles Hill and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fault Diagnosis and Sustainable Control of Wind Turbines by : Silvio Simani
Download or read book Fault Diagnosis and Sustainable Control of Wind Turbines written by Silvio Simani and published by Butterworth-Heinemann. This book was released on 2018-01-02 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fault Diagnosis and Sustainable Control of Wind Turbines: Robust Data-Driven and Model-Based Strategies discusses the development of reliable and robust fault diagnosis and fault-tolerant (‘sustainable’) control schemes by means of data-driven and model-based approaches. These strategies are able to cope with unknown nonlinear systems and noisy measurements. The book also discusses simpler solutions relying on data-driven and model-based methodologies, which are key when on-line implementations are considered for the proposed schemes. The book targets both professional engineers working in industry and researchers in academic and scientific institutions. In order to improve the safety, reliability and efficiency of wind turbine systems, thus avoiding expensive unplanned maintenance, the accommodation of faults in their early occurrence is fundamental. To highlight the potential of the proposed methods in real applications, hardware–in–the–loop test facilities (representing realistic wind turbine systems) are considered to analyze the digital implementation of the designed solutions. The achieved results show that the developed schemes are able to maintain the desired performances, thus validating their reliability and viability in real-time implementations. Different groups of readers—ranging from industrial engineers wishing to gain insight into the applications' potential of new fault diagnosis and sustainable control methods, to the academic control community looking for new problems to tackle—will find much to learn from this work. Provides wind turbine models with varying complexity, as well as the solutions proposed and developed by the authors Addresses in detail the design, development and realistic implementation of fault diagnosis and fault tolerant control strategies for wind turbine systems Addresses the development of sustainable control solutions that, in general, do not require the introduction of further or redundant measurements Proposes active fault tolerant ('sustainable') solutions that are able to maintain the wind turbine working conditions with gracefully degraded performance before required maintenance can occur Presents full coverage of the diagnosis and fault tolerant control problem, starting from the modeling and identification and finishing with diagnosis and fault tolerant control approaches Provides MATLAB and Simulink codes for the solutions proposed
Book Synopsis Mathematical Modeling and Computational Intelligence in Engineering Applications by : Antônio José da Silva Neto
Download or read book Mathematical Modeling and Computational Intelligence in Engineering Applications written by Antônio José da Silva Neto and published by Springer. This book was released on 2016-08-12 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together a rich selection of studies in mathematical modeling and computational intelligence, with application in several fields of engineering, like automation, biomedical, chemical, civil, electrical, electronic, geophysical and mechanical engineering, on a multidisciplinary approach. Authors from five countries and 16 different research centers contribute with their expertise in both the fundamentals and real problems applications based upon their strong background on modeling and computational intelligence. The reader will find a wide variety of applications, mathematical and computational tools and original results, all presented with rigorous mathematical procedures. This work is intended for use in graduate courses of engineering, applied mathematics and applied computation where tools as mathematical and computational modeling, numerical methods and computational intelligence are applied to the solution of real problems.
Book Synopsis Assessing Diagnostic Techniques for Problem Identification in Advanced Industrial Gas Turbines by : Alexander Lifson
Download or read book Assessing Diagnostic Techniques for Problem Identification in Advanced Industrial Gas Turbines written by Alexander Lifson and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes existing, developing, and needed methods for detection, identification, and diagnosis of problems in combustion turbines. The use of combustion turbines for electrical power generation is growing, and advanced models of large industrial turbines are now starting to enter service. In view of the harsh operating conditions and severe service to which these new turbines will be exposed, this paper evaluates sensors and signal analysis methods to detect and diagnose the problems which may surface in operation. Generic problems which have been observed in combustion turbine installations in the recent past are identified, and methods for detecting these problems, quantifying them, and isolating their causes are analyzed.
Book Synopsis Fault Detection and Diagnosis in Gas Turbines by : Graeme Merrington
Download or read book Fault Detection and Diagnosis in Gas Turbines written by Graeme Merrington and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern military aircraft are fitted with Engine Monitoring Systems (EMS), which have the potential to provide maintenance personnel with valuable information for diagnosing engine faults and assessing engine condition. In this study, analytical redundancy methods have been applied to gas turbine engine transient data with the view to extracting the desired fault information. The basic idea is to use mathematical models to interrelate the measured variables and then monitor the effects of fault conditions on the new estimates of the model parameters. In most of the existing literature the models used are assumed to be perfect with the primary source of error arising from the measurement noise. In the technique to be described, a new method of quantifying the effects of changes in the operating conditions is presented when simplified models are employed. The technique accounts for undermodeling effects and errors arising from linearization of an inherently nonlinear system. Results obtained show a marked improvement over those obtained with traditional methods.
Book Synopsis Fault Detection, Supervision and Safety for Technical Processes 1991 by : B. Freyermuth
Download or read book Fault Detection, Supervision and Safety for Technical Processes 1991 written by B. Freyermuth and published by Elsevier. This book was released on 2014-05-23 with total page 647 pages. Available in PDF, EPUB and Kindle. Book excerpt: These Proceedings provide a general overview as well as detailed information on the developing field of reliability and safety of technical processes in automatically controlled processes. The plenary papers present the state-of-the-art and an overview in the areas of aircraft and nuclear power stations, because these safety-critical system domains possess the most highly developed fault management and supervision schemes. Additional plenary papers covered the recent developments in analytical redundancy. In total there are 95 papers presented in these Proceedings.
Book Synopsis Advances in Acoustics and Vibration by : Tahar Fakhfakh
Download or read book Advances in Acoustics and Vibration written by Tahar Fakhfakh and published by Springer. This book was released on 2016-09-01 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides readers with a snapshot of recent research and industrial trends in field of industrial acoustics and vibration. Each chapter, accepted after a rigorous peer-review process, reports on a selected, original piece of work presented and discussed at International Conference on Acoustics and Vibration (ICAV2016), which was organized by the Tunisian Association of Industrial Acoustics and Vibration (ATAVI) and held March 21-23, in Hammamet, Tunisia. The contributions, mainly written by north African authors, covers advances in both theory and practice in a variety of subfields, such as: smart materials and structures; fluid-structure interaction; structural acoustics as well as computational vibro-acoustics and numerical methods. Further topics include: engines control, noise identification, robust design, flow-induced vibration and many others.This book provides a valuable resource for both academics and professionals dealing with diverse issues in applied mechanics. By combining advanced theories with industrial issues, it is expected to facilitate communication and collaboration between different groups of researchers and technology users.
