Near perfect reconstruction linear phase discrete coefficient filter bank design

Gök, Mete


Near real time system identification of servo systems using frequency domain analysis
Geyik, Emre; Turgut, Ali Emre; Özer, Mehmet Bülent; Department of Mechanical Engineering (2022-2-10)
Servo systems control the rotation angle or displacement of the machinery in order to follow reference input commands within required error limits. A typical servo system includes rotating or translating inertia, coupler elements, driver motor and feedback sensor. Mechanical characteristics of a servo system have considerable importance as to satisfy desired performance of the system. In this thesis, a practical method to monitor mechanical characteristics of a servo drive is suggested. Invariance of system...
Fine resolution frequency estimation from three DFT samples: Case of windowed data
Candan, Çağatay (2015-09-01)
An efficient and low complexity frequency estimation method based on the discrete Fourier transform (DFT) samples is described. The suggested method can operate with an arbitrary window function in the absence or presence of zero-padding. The frequency estimation performance of the suggested method is shown to follow the Cramer-Rao bound closely without any error floor due to estimator bias, even at exceptionally high signal-to-noise-ratio (SNR) values.
Near-field performance analysis of locally-conformal perfectly matched absorbers via Monte Carlo simulations
Ozgun, Ozlem; Kuzuoğlu, Mustafa (2007-12-10)
In the numerical solution of some boundary value problems by the finite element method (FEM), the unbounded domain must be truncated by an artificial absorbing boundary or layer to have a bounded computational domain. The perfectly matched layer (PML) approach is based on the truncation of the computational domain by a reflectionless artificial layer which absorbs outgoing waves regardless of their frequency and angle of incidence. In this paper, we present the near-field numerical performance analysis of o...
Near Real Time Orbit Detemination of BILSAT-1
Erdogan, Eren; Karslıoğlu, Mahmut Onur (2009-06-13)
Reduced dynamic models combined with GPSObservations on board the satellites within an extended Kalman Filtering algorithm increases the accuracy of near real time orbit determination. Gravity model as the main force and numerical integration methods are the key concepts in the GPS based reduced dynamic orbit determination. EGM 2008 Earth Gravity Model represented by U.S. National Geospatial Intelligence Agency (NGA) EGM Development Group offers a new model for the determination of gravity accelerations. S...
Selective Harmonic Elimination for Three-Phase Voltage Source Inverters Using Whale Optimizer Algorithm
Nalcaci, Gamze; Ermiş, Muammer (2018-05-05)
Selective Harmonic Elimination (SHE) shows superior harmonic performance at low switching frequencies to eliminate low-order harmonics and this property decreasing losses is a very effective way to reach higher efficiencies in power electronics applications. In this paper, Whale Optimizer Algorithm (WOA) is implemented to decide optimum switching angles for three-phase Voltage Source Inverter (VSI) of eliminating some high order harmonics while providing the required voltage. Besides, Particle Swarm Optimiz...
Citation Formats
M. Gök, “Near perfect reconstruction linear phase discrete coefficient filter bank design,” Middle East Technical University, 2001.