LEADER 05165nam 2200613Ia 450 001 996218164803316 005 20190228233401.0 010 $a1-280-27280-5 010 $a9786610272808 010 $a0-470-36559-5 010 $a0-471-66095-7 010 $a0-471-72313-4 035 $a(CKB)111087027820620 035 $a(EBL)221338 035 $a(SSID)ssj0000254887 035 $a(PQKBManifestationID)11191651 035 $a(PQKBTitleCode)TC0000254887 035 $a(PQKBWorkID)10208841 035 $a(PQKB)11065524 035 $a(MiAaPQ)EBC221338 035 $a(PPN)258031859 035 $a(EXLCZ)99111087027820620 100 $a20010125d2001 uy 0 101 0 $aeng 135 $aur|n|---||||| 181 $ctxt 182 $cc 183 $acr 200 10$aSystem identification$b[electronic resource] $ea frequency domain approach /$fRik Pintelon, Johan Schoukens 210 $aNew York $cIEEE Press$dc2001 215 $a1 online resource (644 p.) 300 $aDescription based upon print version of record. 327 $aContents; Preface; Acknowledgments; List of Operators and Notational Conventions; List of Symbols; List of Abbreviations; CHAPTER 1 An Introduction to Identification; 1.1 What Is Identification?; 1.2 Identification: A Simple Example; 1.2.1 Estimation of the Value of a Resistor; 1.2.2 Simplified Analysis of the Estimators; 1.2.3 Interpretation of the Estimators: A Cost Function-Based Approach; 1.3 Description of the Stochastic Behavior of Estimators; 1.3.1 Location Properties: Unbiased and Consistent Estimates; 1.3.2 Dispersion Properties: Efficient Estimators 327 $a1.4 Basic Steps in the Identification Process1.4.1 Collect Information about the System; 1.4.2 Select a Model Structure to Represent the System; 1.4.3 Match the Selected Model Structure to the Measurements; 1.4.4 Validate the Selected Model; 1.4.5 Conclusion; 1.5 A Statistical Approach to the Estimation Problem; 1.5.1 Least Squares Estimation; 1.5.2 Weighted Least Squares Estimation; 1.5.3 The Maximum Likelihood Estimator; 1.5.4 The Bayes Estimator; 1.5.5 Instrumental Variables; 1.6 Exercises; CHAPTER 2 Measurements of Frequency Response Functions; 2.1 Introduction 327 $a2.2 An Introduction to the Discrete Fourier Transform2.2.1 The Sampling Process; 2.2.2 The Discrete Fourier Transform (DFT-FFT); 2.2.3 DFT Properties of Periodic Signals; 2.2.4 DFT of Burst Signals; 2.2.5 Conclusion; 2.3 Spectral Representations of Periodic Signals; 2.4 Analysis of FRF Measurements Using Periodic Excitations; 2.4.1 Measurement Setup; 2.4.2 Error Analysis; 2.5 Reducing FRF Measurement Errors for Periodic Excitations; 2.5.1 Basic Principles; 2.5.2 Processing Repeated Measurements; 2.5.3 Improved Averaging Methods for Nonsynchronized Measurements; 2.5.4 Coherence 327 $a2.6 FRF Measurements Using Random Excitations2.6.1 Basic Principles; 2.6.2 Reducing the Noise Influence; 2.6.3 Leakage Errors; 2.6.4 Improved FRF Measurements for Random Excitations; 2.7 FRF Measurements of Multiple Input, Multiple Output Systems; 2.8 Guidelines for FRF Measurements; 2.8.1 Guideline 1: Use Periodic Excitations; 2.8.2 Guideline 2: Select the Best FRF Estimator; 2.8.3 Guideline 3: Pretreatment of Data; 2.9 Conclusion; 2.10 Exercises; 2.11 Appendixes; Appendix 2.A: Asymptotic Behavior of Averaging Techniques; Appendix 2.B: Proof of Theorem 2.6 (On Decaying Leakage Errors) 327 $aCHAPTER 3 Frequency Response Function Measurements in the Presence of Nonlinear Distortions3.1 Introduction; 3.2 Intuitive Understanding of the Behavior of Nonlinear Systems; 3.3 A Formal Framework to Describe Nonlinear Distortions; 3.3.1 Class of Excitation Signals; 3.3.2 Selection of a Model Structure for the Nonlinear System; 3.4 Study of the Properties of FRF Measurements in the Presence of Nonlinear Distortions; 3.4.1 Study of the Expected Value of the FRF for a Constant Number of Harmonics; 3.4.2 Asymptotic Behavior of the FRF if the Number of Harmonics Tends to Infinity 327 $a3.4.3 Further Comments on the Related Linear Dynamic System 330 $aElectrical Engineering System Identification A Frequency Domain Approach How does one model a linear dynamic system from noisy data? This book presents a general approach to this problem, with both practical examples and theoretical discussions that give the reader a sound understanding of the subject and of the pitfalls that might occur on the road from raw data to validated model. The emphasis is on robust methods that can be used with a minimum of user interaction. Readers in many fields of engineering will gain knowledge about:* Choice of experimental setup and experiment design* A 606 $aSystem identification 606 $aSystem analysis 615 0$aSystem identification. 615 0$aSystem analysis. 676 $a003.1 676 $a003/.85 700 $aPintelon$b R$g(Rik)$028431 701 $aSchoukens$b J$g(Johan)$027451 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a996218164803316 996 $aSystem identification$91461416 997 $aUNISA LEADER 04791nam 2201021Ia 450 001 9910785518203321 005 20230509122230.0 010 $a1-283-58414-X 010 $a0-520-95404-1 024 7 $a10.1525/9780520954045 035 $a(CKB)2670000000241383 035 $a(EBL)1014243 035 $a(OCoLC)811411282 035 $a(SSID)ssj0000713823 035 $a(PQKBManifestationID)11477106 035 $a(PQKBTitleCode)TC0000713823 035 $a(PQKBWorkID)10659918 035 $a(PQKB)11679510 035 $a(StDuBDS)EDZ0000124691 035 $a(MiAaPQ)EBC1014243 035 $a(OCoLC)834914469 035 $a(MdBmJHUP)muse31067 035 $a(DE-B1597)520914 035 $a(DE-B1597)9780520954045 035 $a(Au-PeEL)EBL1014243 035 $a(CaPaEBR)ebr10595410 035 $a(CaONFJC)MIL389659 035 $a(EXLCZ)992670000000241383 100 $a20120503d2012 ub 0 101 0 $aeng 135 $aurnn#---|u||u 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aEvolution's wedge $ecompetition and the origins of diversity /$fDavid W. Pfennig, Karin S. Pfennig 210 $aBerkeley :$cUniversity of California Press,$d[2012] 215 $a1 online resource (319 pages) 225 1 $aOrganisms and environments ;$vno. 12 300 $aDescription based upon print version of record. 311 0 $a0-520-27418-0 320 $aIncludes bibliographical references and index. 327 $tFront matter --$tContents --$tPreface --$t1. Discovery of a Unifying Principle --$t2. Why Character Displacement Occurs --$t3. When Character Displacement Occurs --$t4. How Character Displacement Unfolds --$t5. Diversity and Novelty Within Species --$t6. Ecological Consequences --$t7. Sexual Selection --$t8. Speciation --$t9. Macroevolution --$t10. Major Themes and Unsolved Problems --$tReferences --$tIndex 330 $aEvolutionary biology has long sought to explain how new traits and new species arise. Darwin maintained that competition is key to understanding this biodiversity and held that selection acting to minimize competition causes competitors to become increasingly different, thereby promoting new traits and new species. Despite Darwin's emphasis, competition's role in diversification remains controversial and largely underappreciated. In their synthetic and provocative book, evolutionary ecologists David and Karin Pfennig explore competition's role in generating and maintaining biodiversity. The authors discuss how selection can lessen resource competition or costly reproductive interactions by promoting trait evolution through a process known as character displacement. They further describe character displacement's underlying genetic and developmental mechanisms. The authors then consider character displacement's myriad downstream effects, ranging from shaping ecological communities to promoting new traits and new species and even fueling large-scale evolutionary trends. Drawing on numerous studies from natural populations, and written for a broad audience, Evolution's Wedge seeks to inspire future research into character displacement's many implications for ecology and evolution. 410 0$aOrganisms and environments ;$vno. 12 606 $aDivergence (Biology) 606 $aCompetition (Biology) 606 $aAnimal diversity 610 $abiodiversity. 610 $abiographical. 610 $abiology books. 610 $abooks for science lovers. 610 $aconservation of environment. 610 $adarwin theories. 610 $adiscussion books. 610 $aeasy to read. 610 $aecological communities. 610 $aeducational books. 610 $aengaging. 610 $aenvironmental ecology. 610 $aevolution of biology. 610 $aevolution of science. 610 $afood chain. 610 $agoing green. 610 $ahistory. 610 $ahome school science books. 610 $alearning from experts. 610 $aleisure reads. 610 $alife sciences. 610 $amaintaining biodiversity. 610 $anonfiction books. 610 $aprotecting animals. 610 $ascientists. 610 $athe importance of the environment. 610 $atravels books. 615 0$aDivergence (Biology) 615 0$aCompetition (Biology) 615 0$aAnimal diversity. 676 $a577.8/3 686 $aWH 3000$2rvk 700 $aPfennig$b David W$g(David William),$f1955-$01507044 702 $aPfennig$b Karin S$g(Karin Susan),$f1969- 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910785518203321 996 $aEvolution's wedge$93737505 997 $aUNINA