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Bandpass filter based on complex analytical refinement of the complex modulation spectrum analysis of the algorithm


500, the maximum thinning ratio of up to 15O, can still ensure the accuracy of the amplitude of the error in the 19 / 5 within the FIR filter using two multiple of the maximum fine of up to 2000 times; the CPU clocked at 200MHz on a microcomputer the operation, using a filter refinement 100 times, for a period of detailed analysis of only 400ms; refined by two filters 2000 times,[link widoczny dla zalogowanych], for a detailed analysis of only 4s. References 1 Lu Wenxiang. Du Runsheng. Mechanical engineering testing, information, and signal analysis. Wuhan: Huazhong University Press. 19922 Lifang Ze, Liu Fu-Qing, Wang Zheng. Vibration Measurement and Analysis Project. Beijing: Higher Education Press. 19923 Dingkang, Xie Ming. Bandpass filter based on complex analytical refinement of the complex modulation spectrum analysis of principles and methods. Vibration Engineering. 2001; 14 (1) :29-354 Ding Kang,[link widoczny dla zalogowanych], Xie Ming. Complex analytic band-pass filter and its application in the demodulation. Vibration Engineering. 2000; 13 (3) :385 -3925 Dingkang. Xie Ming. Discrete convolution spectrum of amplitude error correction method. Vibration Engineering, 1996; 9 (1) :92-986 Dingkang. Xie Ming. DAS a dynamic signal analysis and fault diagnosis system. Vibration Engineering, 1993; 6 (2) :199-2O4AlgorithmofMultipleModulationZoomSpectrumAnalysisBasedonComplexAnalyticBand-PassFilterXieMing (FacutyofMechanicalEngineering, ChongclingUniversityChongqing, 400044) DingKang (DepartmentofMachatronicEngineering.ShantouUniversityShantou, 515063) AbstractOnthebasisoftheprincipleofzoomspectrumanalysiyadoptingcomplexanalyticband - passfilterwithband - widthtD, andthesub-samplingrateD, shiftingfrequency, andmakingspectrumbyFFTwithNdots, thispaperinvesti-gatedthealgorithmofmultiplemodulationzoomspectrumanalysiasedoncomplexanalyticband -filter. Andthendiscussesapmlythecoreofthealgorithm: constructionofcomplexanalyticband-passfilter, principleoffilterouterspread, anddesignofthefilteradoptingone-gradeFIRdigitalfilterortwo-gradeFIR. Itisshowninsimulationthatthemaximumzoomtimeishighto150,[link widoczny dla zalogowanych], andamplitudeerrorislessthan1,[link widoczny dla zalogowanych], whendigitalfilterwithhalf-orderof500. Iftwo-gradeFIRdigitalfilterisadopted,[link widoczny dla zalogowanych], themaximumzoomtimeismorethan2000. andarithmeticspeedisimprovedgreatly. Keywords: signalprocessing; spectrum; analyticsignal; zoom male first author Ming Xie, engineers, students in November 1953. Phone: (023) 65103796; E-mail: kding ~ stu. edu. cn1r one by one ~

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