Condition monitoring and fault diagnosis of induction machine using artificial intelligence methods and empirical mode decomposition

... mathematical model of the machine and thereby using the model to analysis and predict fault mode [67-74] Finite element analysis is popular for simulating and studying of fault mode; especially ... approaches of this project to investigate the automatic fault diagnosis of AC synchronous machine In the next, the mechanics of machine fault mode is presented AC synchronous machine fault diagnosis ... voltages and currents of the induction motor This method is referenced from Peter Vas, “Parameter Estimation, Condition monitoring, and diagnosis of Electrical Machines” Using the dynamic model of...

Condition monitoring and fault diagnosis of induction machine using artificial intelligence methods and empirical mode decomposition

fault diagnosis of induction motors using signal processing based methods and optimal feature selection

... 진단 Fault Diagnosis of Induction Motors using Signal Processing based Methods and Optimal Feature Selection 지도교수 이홍희 이 논문을공학박사학위 논문으로 제출함 2008 년 12 월 울산대학교 대학원 전기전자정보시스템공학부 웬옥투 Fault Diagnosis of ... Diagnosis of Induction Motors using Signal Processing based Methods and Optimal Feature Selection Ngoc-Tu Nguyen A thesis submitted to the School of Electrical Engineering in fulfillment of the thesis ... faults, signal based processing methods for monitoring the condition of induction motor, the optimal feature selection using distance based criterion is considered to remove the irrelevant and redundant...

FAULT DIAGNOSIS OF PERMANENT MAGNET SYNCHRONOUS MOTOR BASED ON MECHANICAL AND MAGNETIC CHARACTERISTIC ANALYSIS

... FAULT DIAGNOSIS OF PERMANENT MAGNET SYNCHRONOUS MOTOR BASED ON MECHANICAL AND MAGNETIC CHARACTERISTIC ANALYSES YU YINQUAN A THESIS SUBMITTED FOR THE DEGREEM OF DOCTOR OF PHILOSOPHY ... COMPUTATION OF UNBALANCED MAGNETIC PULL AND MECHANICAL UNBALANCED FORCE IN MOTOR 64 5.1 Fundamental theory of electromagnetic force calculation 64 5.2 Introduction of Finite Element Method on Magnetic ... INTRODUCTION and motor fault type and fault position can be indicated precisely Numerous studies have been done on the motor fault analysis using vibration signals Mathematical Model of Permanent Magnet...

Application of computational intelligence for faulty detection and diagnosis of induction motors and electromechanical systems

... automatic software platform for fault detection and diagnosis of induction motors and electromechanical systems, analyzing vibration data features and studying and comparing related algorithm, and targeting ... APPLICATION OF COMPUTATIONAL INTELLIGENCE FOR FAULT DETECTION AND DIAGNOSIS OF INDUCTION MOTORS AND ELECTROMECHANICAL SYSTEMS ZHANG YIFAN B Eng (Hons.), Tianjin ... SVM and how it is applied in the case of induction motors and electromechanical systems condition detection Chapter presents and discusses results of the proposed method of condition detection and...

A COMPARATIVE STUDY OF THE DIAGNOSIS OF PULMONARY TUBERCULOSIS USING CONVENTIONAL TOOLS AND POLYMERASE CHAIN REACTION* pot

... were available 4-8 weeks later As no single gold standard was available for comparison of the performance of the individual tests, an analysis of results was done using a variety of standards ... culture and PCR KAVITA MODI – PAREKH ET AL weeks Characterization of Mycobacteria was done at the Corporation laboratory by primary differential tests for atypical Mycobacteria Statistical analysis ... 36 KAVITA MODI – PAREKH ET AL respiratory diseases other than tuberculosis (Table 1A serial-c) These cases were as follows, two each of asthma, pneumonia and cancer lung, one each of post CABG,...

Báo cáo hóa học: "Fault diagnosis of Tennessee Eastman process using signal geometry matching technique" ppt

... this article as: Li and Xiao: Fault diagnosis of Tennessee Eastman process using signal geometry matching technique EURASIP Journal on Advances in Signal Processing 2011 2011:83 Submit your manuscript ... diagnosis using PC1DARMF algorithm 3.1 Introduction to Tennessee Eastman process (TEP) Tennessee Eastman process is first proposed by Downs and Vogel [12] to provide a simulated model of real industrial ... TriWave Page of 19 unrecognized noised signal and a certain number of reference signals (also known as signal templates) as supervisory signals, 1DARMF may be capable of achieving signal recognition...

Tài liệu tiếng anh Điện tử công suất mạch MERS Improved performance of induction motor using magnetic energy recovery switch

... Equivalent circuits of series compensated induction motor for system frequency and self-excited frequency Oscillating current waveforms because of self-excitation of induction motor by MERS with open ... SELF-EXCITATION OF SERIES COMPENSATED INDUCTION MOTOR It is well known that series compensation of induction motor may cause some unstable situations[6] Since MERS works as a series capacitor, MERS also ... quarter of the resonance period of L and C of the MERS, vmers, becomes sinusoidal, consequently the terminal voltage,vterm, also becomes sinusoidal Fig shows simulated waveforms of 'dc-offset...

Báo cáo toán học: " Pyramid-based image empirical mode decomposition for the fusion of multispectral and panchromatic images" pptx

... (2) image fusion using the mixed IMFs of panchromatic and MS images; and (3) quality assessment of the fused image The test data include SPOT images of a forest area and QuickBird images of a ... are the gray value of the fused and MS images, respectively μF is the mean of fused image, μM is the mean of MS image, and m and n are the image sizes 3.1.4 Entropy 3.1 Quality evaluation of the ... 0.7 m and Figure Workflow of EMD-based image fusion 2.8 m, respectively The two images were of the same path, and the panchromatic and MS QuickBird images were taken simultaneously The standard...

báo cáo khoa học: " Diagnosis of pericardial cysts using diffusion weighted magnetic resonance imaging: A case series" pot

... Radiol 2011 doi:10.1186/1752-1947-5-479 Cite this article as: Raja et al.: Diagnosis of pericardial cysts using diffusion weighted magnetic resonance imaging: A case series Journal of Medical ... Diffusionweighted magnetic resonance imaging in focal breast lesions: analysis of 78 cases with pathological correlation Radiol Med 2010, 116:264-275 Raja et al Journal of Medical Case Reports ... Boniface General Hospital, University of Manitoba, Winnipeg, Manitoba, Canada 3Section of Internal Medicine, Department of Internal Medicine, University of Manitoba, Winnipeg, Manitoba, Canada 4Section...

Báo cáo hóa học: " Research Article Fast and Adaptive Bidimensional Empirical Mode Decomposition Using Order-Statistics Filter Based Envelope Estimatio" pot

... on local analysis of the bidimensional empirical mode decomposition, ” Machine Vision and Applications, vol 16, no 3, pp 177–188, 2005 A Linderhed, “2-D empirical mode decompositions in the spirit ... the empirical mode decomposition and Hilbert spectral analysis,” Proceedings of the Royal Society A, vol 459, no 2037, pp 2317–2345, 2003 G Rilling, P Flandrin, and P Goncalves, “On empirical mode ... 1(a): (a) upper envelope matrix using FABEMD after smoothing, (b) lower envelope matrix using FABEMD after smoothing, and (c) mean envelope matrix obtained by averaging the data in (a) and (b) 10.8...

Numerical simulation of unsaturated flow using modified transformation methods

... NUMERICAL SIMULATION OF UNSATURATED FLOW USING MODIFIED TRANSFORMATION METHODS CHENG YONGGANG (B.Eng., M.Eng., Tsinghua University) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY ... serious issue of practical concern 1.3 Convergence Problems Because of the high nonlinearity of soil hydraulic properties, convergence problems exist in numerical simulations of unsaturated ﬂow ... angle of internal friction with respect to changes of the net stress φb angle of internal friction with respect to changes of the matric suction χ factor related to the degree of saturation of the...

High speed fir filter design and optimization using artificial intelligence techniques

... several filters have to be jointly designed In this thesis, several optimization schemes based on the artificial intelligence techniques are presented for the design of high- speed FIR filters ... the filters designed by using GA and MGA - 132 Table A comparison among the filters with 2, 3, and subfilters designed by using GA and MGA - 138 Table A comparison among the designs ... SPoT coefficient values Firstly, genetic algorithm (GA) based optimization methods are proposed for the design of low power high- speed FIR digital filters The high- speed and low power features...

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