Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "signal processing system" wg kryterium: Temat

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 30
Tytuł:
Vibroacoustic condition monitoring of the complex rotation system based on multilevel signal processing
Autorzy:
Pazdrii, Olha
Bouraou, Nadiia
Powiązania:
https://bibliotekanauki.pl/articles/2146575.pdf
Data publikacji:
2020
Wydawca:
Politechnika Poznańska. Instytut Mechaniki Stosowanej
Tematy:
rotation system
signal processing
bispectrum analysis
fractal box-counting dimension
system rotacyjny
przetwarzanie sygnałów
analiza bispektralna
fraktalny wymiar pudełkowy
Opis:
This work is devoted to further research and improvement of the vibroacoustic condition monitoring of complex rotation system during operation. The low-frequency vibration and acoustic noise in the range 0-10 kHz is used as diagnostic information. We propose to use Bispectrum (BS) Analysis at the first level of signal processing, and Fractal Analysis of BS contour images at the second level of signal processing for the diagnosis of small imbalance of rotation system. The experimental studies of forced vibrations of the physical model (PM) of the rotation system are carried out under steady-state and non-steady-state rotation excitations. The results of the BS Analysis of vibroacoustical signals, which are emitted by a rotating PM during different excitation modes, are processed in order to determine fractal box-counting dimension (Minkowski dimension). The research shows that a small imbalance can be efficiently detected by the proposed multilevel signal processing in all modes of PM operation.
Źródło:
Vibrations in Physical Systems; 2020, 31, 2; art. no. 2020224
0860-6897
Pojawia się w:
Vibrations in Physical Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variability of the Acoustic Emission Signals Generated by Partial Discharges in Mineral Oil
Autorzy:
Kunicki, Michał
Powiązania:
https://bibliotekanauki.pl/articles/177772.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
acoustic emission
partial discharge
insulation system
measurements
signal processing
Opis:
The main purpose of the presented research is to investigate the partial discharge (PD) phenomenon variability under long-term AC voltage with particular consideration of the selected physical quantities changes while measured and registered by the acoustic emission method (AE). During the research a PD model source generating surface discharges is immersed in the brand new insulation mineral oil. Acoustic signals generated by the continuously occurred PDs within 168 hours are registered. Several qualitative and quantitative indicators are assigned to describe the PD variability in time. Furthermore, some longterm characteristics of the applied PD model source in mineral oil, are also presented according to acoustic signals emitted by the PD. Finally, various statistical tools are applied for the results analysis and presentation. Despite there are numerous contemporary research papers dealing with long-term PD analysis, such complementary and multiparametric approach has not been presented so far, regarding the presented research. According to the presented research from among all assigned indicators there are discriminated descriptors that could depend on PD long-term duration. On the grounds of the regression models analysis there are discovered trends that potentially allow to apply the results for modeling of the PD variability in time using the acoustic emission method. Subsequently such an approach may potentially support the development and extend the abilities of the diagnostic tools and maintenance policy in electrical power industry.
Źródło:
Archives of Acoustics; 2019, 44, 2; 339-348
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Mechanism of Signal Processing of Solar Radio Burst Data in E-CALLISTO Network (Malaysia)
Autorzy:
Hamidi, Z. S.
Shariff, N. N. M.
Powiązania:
https://bibliotekanauki.pl/articles/412533.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Space weather
CALLSITO system
ISWI (International Space Weather Initiative)
sun
solar radio burst
solar activity
signal processing
e-network
Opis:
Solar space weather events like Coronal Mass Ejections and solar flares are usually accompanied by solar radio bursts, which can be used for a low-cost real-time space weather monitoring. In order to make a standard system, a CALLISTO (Compound Astronomical Low-cost Low-frequency Instrument for Spectroscopy in Transportable Observatory) spectrometers, designed and built by electronics engineer Christian Monstein of the Institute for Astronomy of the Swiss Federal Institute of Technology Zurich (ETH Zurich) have been already developed all over the world since 2005 to monitor the solar activities such as solar flare and Coronal Mass Ejections (CMEs). Up to date, there are 25 sites that used the same system in order to monitor the Sun within 24 hours. This outstanding project also is a part of the United Nations together with NASA initiated the International Heliophysical Year IHY2007 to support developing countries participating in ‘Western Science’. Beginning February 2012, Malaysia has also participated in this project. The goals of this work is to highlight how does the signal processing of solar radio burst data transfer from a site of National Space Centre Banting Selangor directly to the Institute of Astrophysics Switzerland. Solar activities in the low region, focusing from 150 MHz to 400 MHz is observed daily beginning from 00.30UT 12.30 UT. Here, we highlighted how does the signal processing work in order to make sure that the operation is in the best condition. Although the solar activities have experienced rapid growth recently, high-level management of CALLISTO system has remained successfully manage the storage of data. It is also not easy to maintain the future data seems the number of sites are also growing from time to time. In this work, we highlighted the potential role of Malaysia as one of the candidate site that possible gives a good data and focusing on a few aspects such as optimization, and performance evaluation data and visualization.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2014, 15; 30-38
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The 8AE-PD computer measurement system for registration and analysis of acoustic emission signals generated by partial discharges in oil power transformers
Autorzy:
Witos, Franciszek
Opilski, Zbigniew
Szerszeń, Grzegorz
Setkiewicz, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/220623.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
acoustic emission
partial discharge
multichannel system
acoustic signal detection
acoustic signal processing
signal analysis
voltage preamplifier
Opis:
A computer measurement system, designed and built by authors, dedicated to location and description of partial discharges (PD) in oil power transformers examined by means of the acoustic emission (AE) method is presented. The measurement system is equipped with 8 measurement channels and ensures: monitoring of signals, registration of data in real time within a band of 25-1000 kHz in laboratory and real conditions, basic and advanced analysis of recorded signals. The basic analysis carried out in the time, frequency and time-frequency domains deals with general properties of the AE signals coming from PDs. The advanced analysis, performed in the discrimination threshold domain, results in identification of signals coming from different acoustic sources as well as location of these sources in the examined transformers in terms of defined by authors descriptors and maps of these descriptors on the side walls of the tested transformer tank. Examples of typical results of laboratory tests carried out with the use of the built-in measurement system are presented.
Źródło:
Metrology and Measurement Systems; 2019, 26, 2; 403-418
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tabular minimal redundant modular structures for fast and high-precision computations using general-purpose computers
Autorzy:
Selianinau, M.
Powiązania:
https://bibliotekanauki.pl/articles/122002.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Humanistyczno-Przyrodniczy im. Jana Długosza w Częstochowie. Wydawnictwo Uczelniane
Tematy:
arytmetyka modularna
system modułowy
procesory wielordzeniowe
zastosowanie komputerów
cyfrowe przetwarzanie sygnału
modular arithmetic
modular system
multicore processors
computer applications
digital signal processing
Opis:
The present paper is a continuation of research in parallel information processing based on the tabular modular computing structures. We deal with the methodology of using a minimal redundant modular number system for high-speed and high-precision computation by means of modern universal multicore processors. Advantages of formal computing mode on the base of modular arithmetic are demonstrated by the example of implementation of digital signal processing procedures. The additive and additive multiplicative formal computing schemes with the obtained estimations of the cardinality of working ranges for the realization of calculations are presented in the article.
Źródło:
Scientific Issues of Jan Długosz University in Częstochowa. Mathematics; 2017, 22; 129-139
2450-9302
Pojawia się w:
Scientific Issues of Jan Długosz University in Częstochowa. Mathematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
System Concept of WIFI Based Passive Radar
Autorzy:
Rzewuski, S.
Kulpa, K.
Powiązania:
https://bibliotekanauki.pl/articles/227053.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
passive radar system
WIFI signal decoding
frame detection
processing signal from wireless networks
Opis:
In this paper idea of passive radar system based on popular wireless networks commonly named WIFI is presented. In such an networks many transmitters operates in the same channel using multiple access. Wireless networks operating on frequencies 2.4GHz and 5GHz are very common today (IEEE 802.11 a/b/g/n). Classic passive radar determines bistatic distance and velocity by using cross-ambiguity function. To seek target position in XYZ space at least illumination of 3 different transmitters is required. In that paper it was assumed, that all transmitters operate on the same band frequency and the passive radar receiver has to couple each transmission burst with transmitter position by decoding the physical address of transmitter from captured data stream. Having most of the signal sources in our passive radar environment it is possible to detect and to localize objects of interest.
Źródło:
International Journal of Electronics and Telecommunications; 2011, 57, 4; 447-450
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selekcja cech osobniczych sygnału mowy z wykorzystaniem algorytmów genetycznych
Autorzy:
Kamiński, Kamil
Dobrowolski, Andrzej P.
Majda, Ewelina
Powiązania:
https://bibliotekanauki.pl/articles/111176.pdf
Data publikacji:
2019
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
mowa
głos
system automatycznego rozpoznawania mowy
przetwarzanie sygnałów
speech
voice
speech recognition system
signal processing
Opis:
W referacie przedstawiono system automatycznego rozpoznawania mówcy zaimplementowany w środowisku Matlab oraz pokazano sposoby realizacji i optymalizacji poszczególnych elementów tego systemu. Główny nacisk położono na wyselekcjonowanie cech dystynktywnych głosu mówcy z wykorzystaniem algorytmu genetycznego, który pozwala na uwzględnienie synergii cech podczas selekcji. Pokazano również wyniki optymalizacji wybranych elementów klasyfikatora, m.in. liczby rozkładów Gaussa użytych do zamodelowania każdego z głosów. Ponadto, podczas tworzenia modeli głosów zastosowano model głosu uniwersalnego.
The paper presents automatic speaker recognition system, implemented in the Matlab environment, and demonstrates how to achieve and optimize various elements of the system. The main emphasis was put on features selection of speech signal using a genetic algorithm, which takes into account synergy of features. The results of the selected elements of optimizing classifier have been also shown, including the number of Gaussian distributions used to model each of the voices. In addition during creating voice models, the universal voice model have been used.
Źródło:
Inżynieria Bezpieczeństwa Obiektów Antropogenicznych; 2019, 1-2; 8-16
2450-1859
2450-8721
Pojawia się w:
Inżynieria Bezpieczeństwa Obiektów Antropogenicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research and Medical Transcranial Doppler System
Autorzy:
Lewandowski, M.
Walczak, M.
Karwat, P.
Witek, B.
Karłowicz, P.
Powiązania:
https://bibliotekanauki.pl/articles/177389.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Doppler system
digital signal processing
hardware-software partitioning
field programmable gate array (FPGA)
Opis:
A new ultrasound digital transcranial Doppler system (digiTDS) is introduced. The digiTDS enables diagnosis of intracranial vessels which are rather difficult to penetrate for standard systems. The device can display a color map of flow velocities (in time-depth domain) and a spectrogram of a Doppler signal obtained at particular depth. The system offers a multigate processing which allows to display a numer of spectrograms simultaneously and to reconstruct a flow velocity profile. The digital signal processing in digiTDS is partitioned between hardware and software parts. The hardware part (based on FPGA) executes a signal demodulation and reduces data stream. The software part (PC) performs the Doppler processing and display tasks. The hardware-software partitioning allowed to build a flexible Doppler platform at a relatively low cost. The digiTDS design fulfills all necessary medical standards being a new useful tool in the transcranial field as well as in heart velocimetry research.
Źródło:
Archives of Acoustics; 2016, 41, 4; 773-781
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quick-response protection system against electric shock in distributed generation systems
Autorzy:
Shkrabets, Fedir
Plaksin, Sergej
Ostapchuk, Oleksandr
Kuznetsov, Valeriy
Tymchenko, Irina
Muntian, Antonina
Powiązania:
https://bibliotekanauki.pl/articles/1840853.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
electric networks
protection
reliability
ground fault current
electrical safety
protection against electric shock
signal processing system
analog filtering
sieci elektryczne
ochrona
niezawodność
bezpieczeństwo elektryczne
ochrona przeciwporażeniowa
system przetwarzania sygnału
filtracja analogowa
Opis:
The peculiarities of the operation of distributed generation systems lead to a change in the requirements for the reliability and safety of the power distribution systems in which they are integrated. To meet the increased requirements, continuous monitoring of the insulation parameters (active resistance and capacitance to ground) is often used with operating artificial non-industrial frequency operational signals introduced into the network. In the case of a sudden touch, such a system is not effective, since the response time of the protection device, which consists of the signal processing time and the operating of the actuator, is crucially important. For the used operational signals with a frequency of 100 and 200 Hz, the processing time using the Fourier transform is 10 ms for 100 Hz and 5 ms for 200 Hz. Considering that the response time of the fastest actuators (based on vacuum switches) is from 3 to 7 ms, this is a rather significant period of time. To develop an effective resolver system, the capabilities of the Matlab environment were used to determine the most successful design of an analog prototype (Butterworth, Bessel, Chebyshev and Cauer of 6th order) for an operational signal with a frequency of 200 Hz. As a result, the processing time was established, which varies widely from 3.5 to 19 ms. Taking into account the known indicators, namely the frequency and number of operational signals, a signal processing system was developed using the vector-matrix analysis method. As a result of modeling the processing characteristics of functional signals (at a sampling rate of 1 kHz), the system quick-response was 3 ms, with the possibility of its further decrease as its productiveness increases.
Źródło:
Diagnostyka; 2021, 22, 3; 59-65
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quick-response protection system against electric shock in distributed generation systems
Autorzy:
Shkrabets, Fedir
Plaksin, Sergej
Ostapchuk, Oleksandr
Kuznetsov, Valeriy
Tymchenko, Irina
Muntian, Antonina
Powiązania:
https://bibliotekanauki.pl/articles/1840876.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
electric networks
protection
reliability
ground fault current
electrical safety
protection against electric shock
signal processing system
analog filtering
sieci elektryczne
ochrona
niezawodność
bezpieczeństwo elektryczne
ochrona przeciwporażeniowa
system przetwarzania sygnału
filtracja analogowa
Opis:
The peculiarities of the operation of distributed generation systems lead to a change in the requirements for the reliability and safety of the power distribution systems in which they are integrated. To meet the increased requirements, continuous monitoring of the insulation parameters (active resistance and capacitance to ground) is often used with operating artificial non-industrial frequency operational signals introduced into the network. In the case of a sudden touch, such a system is not effective, since the response time of the protection device, which consists of the signal processing time and the operating of the actuator, is crucially important. For the used operational signals with a frequency of 100 and 200 Hz, the processing time using the Fourier transform is 10 ms for 100 Hz and 5 ms for 200 Hz. Considering that the response time of the fastest actuators (based on vacuum switches) is from 3 to 7 ms, this is a rather significant period of time. To develop an effective resolver system, the capabilities of the Matlab environment were used to determine the most successful design of an analog prototype (Butterworth, Bessel, Chebyshev and Cauer of 6th order) for an operational signal with a frequency of 200 Hz. As a result, the processing time was established, which varies widely from 3.5 to 19 ms. Taking into account the known indicators, namely the frequency and number of operational signals, a signal processing system was developed using the vector-matrix analysis method. As a result of modeling the processing characteristics of functional signals (at a sampling rate of 1 kHz), the system quick-response was 3 ms, with the possibility of its further decrease as its productiveness increases.
Źródło:
Diagnostyka; 2021, 22, 3; 59-65
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On-line process identification using the Modulating Functions Method and non-asymptotic state estimation
Autorzy:
Byrski, Witold
Drapała, Michał
Powiązania:
https://bibliotekanauki.pl/articles/2175109.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
system identification
modulating functions method
state observers
signal processing
adaptive algorithms
Opis:
The paper presents an iterative identification method dedicated for industrial processes. The method consists of two steps. In the first step, a MISO system is identified with the Modulating Functions Method to obtain sub-models with a common denominator. In the second step, the obtained subsystems are re-identified. This procedure enables to obtain the set of models with different denominators of the transfer functions. The algorithm was used for on-line identification of a glass conditioning process. Identification window is divided into intervals, in which the models can be updated based on recent process data, with the use of the integral state observer. Results of the performed simulations for the identified models are compared with the historical process data.
Źródło:
Archives of Control Sciences; 2022, 32, 3; 535--555
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Obrabotka parametrov chastic vodnykh rastvorov pri intensifikacii raboty oborotnykh sistem vodosnabzhenija
Autorzy:
Movchan, S.
Powiązania:
https://bibliotekanauki.pl/articles/77013.pdf
Data publikacji:
2014
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
processing
aqueous solution
water supply system
mechanical parameter
hydraulic parameter
optical method
Doppler signal amplitude
Źródło:
Motrol. Motoryzacja i Energetyka Rolnictwa; 2014, 16, 6
1730-8658
Pojawia się w:
Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical method of vibroacoustic estimators analysis in a frequency domain for IC engine
Metoda numeryczna analizy estymatorów wibroakustycznych w dziedzinie częstotliwości dla silnika spalinowego
Autorzy:
Merkisz, J.
Waligórski, M.
Powiązania:
https://bibliotekanauki.pl/articles/134134.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
common rail
diesel engine
vibroacoustics
OBD system
On-Board Diagnostics
environment protection
digital signal processing
combustion
diagnostic algorithm
silnik spalinowy ZS
system zasilania typu common rail
wibroakustyka
system OBD
diagnostyka pokładowa pojazdu
ochrona środowiska naturalnego
cyfrowa obróbka sygnałów
spalanie
algorytm diagnostyczny
Opis:
The paper describes the assessment of the main processes taking place in a IC engine. The article concerns vibroacoustic processes. Authors chosen vibration ones to the research. In view of the characteristics that the above processes have for the diagnosis of the slow and fast processes taking place during combustion, it was necessary to take into account them for periodic and on-line analyses of technical state and correctness of the engine dynamic processes run. Evaluations of the possibility of the method application were performed in the point of view of the diagnostic analysis and its use in the diagnostic system for combustion process and in the aspect of the limitation of excessive emission sources (occurred by incorrect processes runs or by functional characteristics decrease of the object or by potential failures of the elements and subassemblies during exploitation). Method analysis of vibration acceleration generated in an engine, basing on diagnostics theory use, with the help of which quantitive components obtained from the frequency-domain processes runs were searched. Diagnostic estimators were the measures of the quantity assessment, changes of which were the subject of presented analyses. Limits and qualification guidelines of an incorrect process are also in a paper. Diagnostic algorithms of misfire detection for the present and future vehicles combustion engines (also for hybrid vehicles) and in the aspect of OBD III or OBM systems application are taken into account.
W artykule przedstawiono ocenę przebiegu procesów roboczych zachodzących w silniku spalinowym. Praca dotyczy procesów wibroakustycznych, z których do badań wybrano procesy drganiowe. Analizując właściwości powyższych procesów z punktu widzenia diagnostyki procesów wolno- i szybkozmiennych zachodzących podczas spalania paliwa, konieczne stało się uwzględnienie ich w ocenie okresowej i ciągłej stanu technicznego obiektu i poprawności procesów zachodzących w tymże silniku. Ocenę możliwości zastosowania metody przeprowadzono pod kątem analizy diagnostycznej i jej aplikacji w systemie diagnostycznym procesu spalania oraz w aspekcie ograniczenia nadmiernej emisji przez źródła napędu pojazdu (wynikające z nieprawidłowości przebiegu procesów lub zmniejszenia charakterystyk funkcjonalnych obiektu, albo potencjalnych niesprawności elementów i podzespołów w procesie eksploatacji). Dokonano analizy metody bazującej na zastosowaniu przyspieszeń drgań generowanych w silniku, z zastosowaniem teorii diagnostycznej, oraz ilościowych składowych uzyskanych z przebiegów procesów przedstawionych w dziedzinie częstotliwości. Estymatory diagnostyczne stanowiły ilościowe elementy procesu oceny, których przedmiotem były ich ilościowe zmiany. Przedstawiono wartości graniczne i wytyczne kwalifikacji nieprawidłowości zachodzących w procesie. Uwzględniono ponadto algorytmy diagnostyczne wykrycia wypadania zapłonów dla obecnych i przyszłych konstrukcji silników stosowanych w pojazdach (również dla silników o napędzie hybrydowym) i w aspekcie zastosowania systemów OBDIII i OBM.
Źródło:
Combustion Engines; 2013, 52, 3; 25-33
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
MULTI-EDIP - an intelligent software package for computer-aided multivariate signal and system identification
Autorzy:
Kasprzyk, J.
Figwer, J.
Powiązania:
https://bibliotekanauki.pl/articles/229907.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
computer-aided system identification
parametric model identification
nonparametric model identification
digital signal processing
Opis:
In the paper an intelligent software package MULTI-EDIP for computer-aided identification of multivariate signals and systems is presented. Purposes and main requirements for computer-aided identification are discussed. A summary of the most important MULTI-EDIP services with a focus on expert advice is described. An example of using the package in electroacoustic plant identification for active noise control system development is presented.
Źródło:
Archives of Control Sciences; 2013, 23, 4; 427-446
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
LMS Algorithm Step Size Adjustment for Fast Convergence
Autorzy:
Bismor, D.
Powiązania:
https://bibliotekanauki.pl/articles/177252.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
signal processing
adaptive algorithms
least mean squares
active noise control
system identification
Opis:
In the areas of acoustic research or applications that deal with not-precisely-known or variable condi- tions, a method of adaptation to the uncertainness or changes is usually necessary. When searching for an adaptation algorithm, it is hard to overlook the least mean squares (LMS) algorithm. Its simplicity, speed of computation, and robustness has won it a wide area of applications: from telecommunication, through acoustics and vibration, to seismology. The algorithm, however, still lacks a full theoretical analysis. This is probabely the cause of its main drawback: the need of a careful choice of the step size – which is the reason why so many variable step size flavors of the LMS algorithm has been developed. This paper contributes to both the above mentioned characteristics of the LMS algorithm. First, it shows a derivation of a new necessary condition for the LMS algorithm convergence. The condition, although weak, proved useful in developing a new variable step size LMS algorithm which appeared to be quite different from the algorithms known from the literature. Moreover, the algorithm proved to be effective in both simulations and laboratory experiments, covering two possible applications: adaptive line enhancement and active noise control.
Źródło:
Archives of Acoustics; 2012, 37, 1; 31-40
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 30

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies