Essays about: "fft analysis"

Showing result 16 - 20 of 46 essays containing the words fft analysis.

  1. 16. Analysing Memory Performance when computing DFTs using FFTW

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Andreas Heiskanen; Erik Johansson; [2018]
    Keywords : fftw; discrete fourier transform; fast fourier transform; hpc; perf; cache; memory analysis;

    Abstract : Discrete Fourier Transforms (DFTs) are used in a wide variety of dif-ferent scientific areas. In addition, there is an ever increasing demand on fast and effective ways of computing DFT problems with large data sets. The FFTW library is one of the most common used libraries when computing DFTs. READ MORE

  3. 17. Characterization of creping marks in paper

    University essay from Linköpings universitet/Datorseende

    Author : Isak Strömberg; [2018]
    Keywords : Characterization; creping marks; paper; FFT; MRA; CNN;

    Abstract : The cost and environmental damage of reclaims is a large problem within thepaper industry. With certain types of paper, so called crepe marks on the paper’ssurface is a common issue, leading to printing defects and consequentlyreclaims. READ MORE

  4. 18. VIBRATION ANALYSIS OF THE FLUE GAS FAN IN MÄLARENERGI’S UNIT 6 : Troubleshooting using CFD simulations in ANSYS to locate the origin of the vibration spikes and suggest solutions for a more optimized performance

    University essay from Mälardalens högskola/Akademin för ekonomi, samhälle och teknik

    Author : Felix Brogren; Peter Gustafsson; [2018]
    Keywords : Troubleshoot; CFD simulation; spectrum analysis; flow-induced vibration; vibrations in machinery; Felsökning; CFD-simulering; spektrum analys; flödesinducerad vibration; vibrationer i maskiner;

    Abstract : The purpose of this study is to investigate the flue gas fan in Mälarenergi’s Unit 6 and try to find what is causing the vibrations increase. The Fast Fourier transform (FFT) method was used for this degree project. A comparison was made with previous studies using FFT in order to pinpoint the source of the problem with vibrations. READ MORE

  5. 19. Transmission Dynamics Modelling : Gear Whine Simulation Using AVL Excite

    University essay from KTH/Fordonsdesign

    Author : Reza Mehdi Pour; [2018]
    Keywords : Gear whine noise; transmission error TE ; mesh stiffness; gear mesh; multibody dynamics simulation; reduction methods.; Kugghjulsljud; transmissionsfel TE ; kuggstyvhet; kuggingrepp; stelkroppssimulering; reduktionsmetoder.;

    Abstract : Nowadays, increasing pressure from legislation and customer demands in the automotive industryare forcing manufacturers to produce greener vehicles with lower emissions and fuel consumption.As a result, electrified and hybrid vehicles are a growing popular alternative to traditional internalcombustion engines (ICE). READ MORE

  6. 20. Data acquisition system for optical frequency comb spectroscopy

    University essay from Umeå universitet/Institutionen för fysik

    Author : Ragnar Seton; [2017]
    Keywords : DAQS; HITRAN; MATLAB; libmx; Fourier Transform Spectrometry; Real time data visualization;

    Abstract : The Optical Frequency Comb Spectroscopy (OFCS) Group at the Department of Physics at Umeå University develops new techniques for extremely high sensitivity trace gas detection, non invasive temperature measurements, and other applications of OFCS. Their setup used primarily for trace gas detection contains several components that have been developed in-house, including a Fourier Transform Spectrometer (FTS) and an auto-balancing detector. READ MORE