Search for dissertations about: "FFT"
Showing result 21 - 25 of 46 swedish dissertations containing the word FFT.
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21. Gate Level Description of Synchronous Hardware and Automatic Verification Based on Theorem Proving
Abstract : Today's hardware development industry faces enormous problems. The primary reason for this is that the complexity of state-of-the-art hardware devices is growing faster than the capacity of the tools that are used to check that they are correct. READ MORE
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22. Classical molecular dynamics simulations of collision-induced absorption : method development and evaluation
Abstract : In this thesis collision-induced absorption (CIA) coefficients are computed using molec-ular dynamics (MD) simulations. Part I is dedicated to the theoretical frame of the method, from the classical theory radiation to the derivation of an absorption coefficient. READ MORE
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23. Singular Value Computations for Toeplitz Matrices and Subspace Tracking
Abstract : This thesis addresses the problem of computing the largest singular values and corresponding singular vectors of a Toeplitz matrix. These are often requested in signal processing and system identification to extract the signal from the noise. READ MORE
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24. Arbitrary Waveform Impedance Spectroscopy for Characterization and Diagnostics of High Voltage Insulation
Abstract : In high voltage engineering the dielectric response technique is a widely used tool both for characterization of insulation materials and for diagnostics of components such as transformers and cables. Currently available techniques are not capable of measuring on-line which would be advantageous; when characterizing a material and evaluating the effect of different voltage magnitudes, waveforms and temperatures it is desirable to be able to observe the continuous development of the dielectric properties. READ MORE
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25. Simplified models to evaluate nonlinear dynamics in hydropower rotors
Abstract : In hydropower systems, it is essential to avoid catastrophic failures that lead to human and economic losses. Unfortunately, a hydropower rotor can behave abnormally since several nonlinear effects occur during start-up, shut-downs or when running at nominal speed. READ MORE