Essays about: "Spectral decomposition method"

Showing result 1 - 5 of 14 essays containing the words Spectral decomposition method.

  1. 1. Classification of EEG Data Using Convolutional Neural Networks and the Scaled Reassigned Spectrogram

    University essay from Lunds universitet/Matematisk statistik

    Author : Karin Pagels; [2021]
    Keywords : Mathematics and Statistics;

    Abstract : Electroencephalography (EEG) is a medical technique for measuring brain activity through several channels connected to the scalp. Interpreting EEG data is a difficult problem because of the large amount of noise contained in the data. READ MORE

  2. 2. Experimental acceleration Measurements and Finite Elements Modeling

    University essay from Linnéuniversitetet/Institutionen för maskinteknik (MT); Linnéuniversitetet/Institutionen för maskinteknik (MT)

    Author : Ibrahim Alnimairi; Salim Arrabi; [2021]
    Keywords : signal processing. PSD; mode shapes; Mdof; Sdof; PSDT-SVD; finite element modelling;

    Abstract : Heavy crushing machines under their production shifts, creates various levels of vibration, noise and dynamic forces which can be transferred to other parts of the industrial unit. Such kind of factors applies continuous forces on machine parts which can cause gradual fatigue, creep and eventually failure of machine. READ MORE

  3. 3. Experimental Study of Installation Effects on Cooling Fan Noise

    University essay from KTH/Marcus Wallenberg Laboratoriet MWL

    Author : Yu-Yu Lu; [2021]
    Keywords : Electric vehicles; Cooling fan noise; Installation effects; Free-space measurement; Wall-mounted measurement; In-vehicle measurement; Spectral decomposition method; Tonality; Broadband noise level.;

    Abstract : Owing to the ever-changing developments of battery and electric powertrain, vehicle electrification is the trend in the future. Without the presence of a combustion engine, masking effect from it reduces and noises from other components become perceivable. Among all, the cooling fan is one of the major noise sources. READ MORE

  4. 4. Reduced Order Modelling using Dynamic Mode Decomposition and Koopman Spectral Analysis with Deep Learning

    University essay from Lunds universitet/Matematik LTH

    Author : David Krantz; Olof Månsson; [2020]
    Keywords : non-linear dynamical systems; modal decomposition; Koopman operator theory; machine learning; data-driven analysis; Mathematics and Statistics;

    Abstract : In the industry simulation models are commonly used in system development. These models can become complicated in order to capture the physical behaviour of the underlying dynamical system. A high-fidelity representation, which can result in long simulation times, is in some settings not strictly required. READ MORE

  5. 5. Comparative Analysis of Adaptive Domain Decomposition Algorithms for a Time-Spectral Method

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

    Author : Vilhelm Dinevik; [2020]
    Keywords : ;

    Abstract : Time-spectral solvers for partial differential equations (PDE) have been explored in various forms during the last few decades. The generalized weighted residual method (GWRM) is one such method with a high accuracy and efficiency. The GWRM has so far been implemented almost exclusively with a uniform grid of subdomains in the spatial domain. READ MORE