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Wyszukujesz frazę "acoustic control" wg kryterium: Temat


Tytuł:
Self-supervised learning of motion-induced acoustic noise awareness in social robots
Autorzy:
Andrade, João
Pedro, Santana
Almeida, Alexandre P.
Powiązania:
https://bibliotekanauki.pl/articles/950803.pdf
Data publikacji:
2019
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
social robot
acoustic noise
motion control
self-supervised learning
robot społeczny
hałas akustyczny
kontrola ruchu
Opis:
With the growing presence of robots in human populated environments, it becomes necessary to render their presence natural, rather than invasive. To do that, robots need to make sure the acoustic noise induced by their motion does not disturb people nearby. In this line, this paper proposes a method that allows the robot to learn how to control the amount of noise it produces, taking into account the environmental context and the robot’s mechanical characteristics. Concretely, the robot adapts its motion to a speed that allows it to produce less noise than the environment’s background noise and, hence, avoiding to disturb nearby humans. For that, before executing any given task in the environment, the robot learns how much acoustic noise it produces at different speeds in that environment by gathering acoustic informatinon through a microphone. The proposed method was successfully validated on various environments with various background noises. In addition, a PIR sensor was installed on the robot in order to test the robot’s ability to trigger the noise-aware speed control procedure when a person enters the sensor’s field of view. The use of a such a simple sensor aims at demonstrating the ability of the proposed system to be deployed in minimalistic robots, such as micro unmanned aerial vehicles.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2019, 13, 1; 3-14
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza drgań drogowych barier akustycznych z wykorzystaniem oprogramowania Test.Lab firmy LMS
Analysis of acoustic road barriers vibrations with the use of LMS Test.Lab software
Autorzy:
Bartmański, C.
Bochenek, W.
Dudzińska, M.
Kompała, J.
Martyka, J.
Miterska, M.
Motyka, Z.
Passia, H.
Ramowski, A.
Saternus, A.
Staniek, A.
Powiązania:
https://bibliotekanauki.pl/articles/155508.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
dopplerowska wibrometria laserowa
ekran drogowy akustyczny
powierzchnie drgające
emisja fali akustycznej
kontrola hałasu
laser Doppler vibrometry
acoustic road barrier
vibrating surfaces
sound wave emission
noise control
Opis:
W artykule przedstawiono wyniki badań akustycznych barier drogowych, uzyskane z wykorzystaniem laserowego wibrometru dopplerowskiego i przetworzone z wykorzystaniem oprogramowania LMS, na przykładzie ekranu akustycznego zlokalizowanego przy drodze S1 na terenie Sosnowca. Eksperymentalną analizę modalną realizowano w środowisku Test.Lab, firmy LMS.
In the paper, the results of tests and calculations are presented for acoustic road barrier treated as a plane vibrating surface source emitting acoustic waves. The tests were realized with the use of scanning Laser Doppler Vibrometer (LDV) which enables remote registration and the spectral analysis of vibrations for the points of the square lattice chosen on the tested surface. For comparison obtained data were also analyzed with the LMS Test.Lab software for modal analysis ([1, 2, 3, 9]). The acoustic barrier at S1 road in Sosnowiec was chosen for the in situ tests (Fig. 1). The general view of tested acoustic road barrier spot and measurement configuration is presented in the Figs 2 – 6. For the first time, the comparison was made of data analysis results obtained for acoustic barrier vibrations identified with the use of laser vibrometer PSV-400 internal tools and the ones calculated with the use of LMS Test.Lab software. The results were presented in Tab. 1, Fig. 7 and Fig. 11. In Tab. 2, Tab. 3, Tab.4 and Figs. 8 – 10, MAC coefficients (Modal Assurance Criterion, [4, 5, 6]) and identi-fied vibration modes were presented. The final method being still developed may find use in wide range of applications, e.g. for sound transmission analysis ([7], [8]) of plane acoustic road barriers for different vibration modes.
Źródło:
Pomiary Automatyka Kontrola; 2014, R. 60, nr 12, 12; 1100-1103
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Verification of the Calculation Assumptions Applied to Solutions of the Acoustic Measurements Uncertainty
Autorzy:
Batko, W.
Bal, R.
Powiązania:
https://bibliotekanauki.pl/articles/176297.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
environmental noise control
statistical analysis
acoustic measurement
uncertainty
Opis:
The assessment of the uncertainty of measurement results, an essential problem in environmental acoustic investigations, is undertaken in the paper. An attention is drawn to the – usually omitted – problem of the verification of assumptions related to using the classic methods of the confidence intervals estimation, for the controlled measuring quantity. Especially the paper directs attention to the need of the verification of the assumption of the normal distribution of the measuring quantity set, being the base for the existing and binding procedures of the acoustic measurements assessment uncertainty. The essence of the undertaken problem concerns the binding legal and standard acts related to acoustic measurements and recommended in: ‘Guide to the expression of uncertainty in measurement’ (GUM) (OIML 1993), developed under the aegis of the International Bureau of Measures (BIPM). The model legitimacy of the hypothesis of the normal distribution of the measuring quantity set in acoustic measurements is discussed and supplemented by testing its likelihood on the environment acoustic results. The Jarque-Bery test based on skewness and flattening (curtosis) distribution measures was used for the analysis of results verifying the assumption. This test allows for the simultaneous analysis of the deviation from the normal distribution caused both by its skewness and flattening. The performed experiments concerned analyses of the distribution of sound levels: LD, LE, LN, LDWN, being the basic noise indicators in assessments of the environment acoustic hazards.
Źródło:
Archives of Acoustics; 2014, 39, 2; 199-202
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mobile phone use and risk for intracranial tumors and salivary gland tumors – A meta-analysis
Autorzy:
Bortkiewicz, Alicja
Gadzicka, Elżbieta
Szymczak, Wiesław
Powiązania:
https://bibliotekanauki.pl/articles/2161927.pdf
Data publikacji:
2017-02-21
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
electromagnetic fields
brain tumors
acoustic neuroma
salivary gland tumors
cellular phone
case-control Studies
Opis:
Results of epidemiological studies on the association between use of mobile phone and brain cancer are ambiguous, as well as the results of 5 meta-analysis studies published to date. Since the last meta-analysis (2009), new case-control studies have been published, which theoretically could affect the conclusions on this relationship. Therefore, we decided to perform a new meta-analysis. We conducted a systematic review of multiple electronic data bases for relevant publications. The inclusion criteria were: original papers, case-control studies, published till the end of March 2014, measures of association (point estimates as odds ratio and confidence interval of the effect measured), data on individual exposure. Twenty four studies (26 846 cases, 50 013 controls) were included into the meta-analysis. A significantly higher risk of an intracranial tumor (all types) was noted for the period of mobile phone use over 10 years (odds ratio (OR) = 1.324, 95% confidence interval (CI): 1.028–1.704), and for the ipsilateral location (OR = 1.249, 95% CI: 1.022–1.526). The results support the hypothesis that long-term use of mobile phone increases risk of intracranial tumors, especially in the case of ipsilateral exposure. Further studies are needed to confirm this relationship. Int J Occup Med Environ Health 2017;30(1):27–43
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2017, 30, 1; 27-43
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Perception-Based Method for the Noise Control of Construction Machines
Autorzy:
Carletti, E.
Powiązania:
https://bibliotekanauki.pl/articles/176980.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
noise control
acoustic design
sound quality
annoyance
psychoacoustics
construction machines
Opis:
During operation, construction machines generate high noise levels which can adversely affect the health and the job performance of operators. The noise control techniques currently applied to reduce the noise transmitted into the operator cab are all based on the decrease of the sound pressure level. Merely reducing this noise parameter may be suitable for the compliance with the legislative requirements but, unfortunately, it is not sufficient to improve the subjective human response to noise. The absolute necessity to guarantee comfortable and safe conditions for workers, requires a change of perspective and the identification of different noise control criteria able to combine the reduction of noise levels with that of psychophysical descriptors representing those noise attributes related to the subjective acoustical discomfort. This paper presents the results of a study concerning the “customization” of a methodology based on Sound Quality for the noise control of construction machines. The purpose is to define new hearing-related criteria for the noise control able to guarantee not only reduced noise levels at the operator position but also a reduced annoyance perception.
Źródło:
Archives of Acoustics; 2013, 38, 2; 253-258
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przemysłowe tory pomiarowe sygnałów wibroakustycznych przy frezowaniu tworzyw drzewnych
Industrial measuring lines for vibroacoustic signals when milling wood materials
Autorzy:
Czarniak, P.
Górski, J.
Szwajka, K.
Wilkowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/287660.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
MDF
nadzorowanie
emisja akustyczna
drgania
control
acoustic emission
vibrations
Opis:
Jedną z najbardziej istotnych tendencji w rozwoju technik wytwarzania jest automatyzacja produkcji. Nieodzowne staje się stosowanie układów automatycznego nadzoru stanu narzędzia i procesu skrawania. W literaturze naukowej opisano wiele różnych czujników, mierzących różne wielkości fizyczne. Opracowano także liczne, wyszukane metody obróbki i analizy sygnałów. Spośród nich jednakże tylko nieliczne znalazły zastosowanie przemysłowe. Celem przeprowadzonych badań było opanowanie metodyki rejestracji sygnałów drgań, emisji akustycznej i hałasu towarzyszących obróbce tworzyw drzewnych. W ramach przeprowadzonych badań podjęto próbę ustalenie miejsca optymalnej lokalizacji czujników na obrabiarce oraz dokonano analizy wstępnych wyników pomiarów pod kątem ich przydatności do oceny stanu narzędzia.
Production automation is one of the most essential directions in the development of manufacturing techniques. It becomes prerequisite to use systems for automatic control of tool condition and machining process. Scientific literature contains descriptions of many different sensors, which measure various physical quantities. Moreover, many sophisticated methods for signal processing and analysis were developed. However, only few of them were applied in industrial scale. The purpose of completed tests was to study recording methods for vibration signal, acoustic emission and noise accompanying wood material working. In the scope of these tests, there were efforts made to determine optimal location for sensors fitted on the woodworking machine. Moreover, initial measurement results were analysed in order to find out whether they would be useful to assess tool condition. This scientific work was financed by KBN [State Committee for Scientific Research] in years 2003-2005 (Grant No. 3 P06L 025 24).
Źródło:
Inżynieria Rolnicza; 2006, R. 10, nr 12(87), 12(87); 75-83
1429-7264
Pojawia się w:
Inżynieria Rolnicza
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ekrany akustyczne jako metoda ograniczania emisji hałasu w infrastrukturze drogowej
Acoustic baffles as a method of reduction of noise emission in the road infrastructure
Autorzy:
Drozd, W.
Powiązania:
https://bibliotekanauki.pl/articles/161107.pdf
Data publikacji:
2013
Wydawca:
Polski Związek Inżynierów i Techników Budownictwa
Tematy:
infrastruktura drogowa
hałas drogowy
ograniczanie hałasu
ekran akustyczny
przepis prawny
rozwiązanie techniczne
road infrastructure
road noise
noise control
acoustic screen
legal regulation
technical solution
Opis:
Artykuł porusza problematykę związaną z hałasem w infrastrukturze drogowej. Przedstawiono w nim wymagania stawiane ekranom akustycznym w kontekście obowiązujących norm i przepisów prawnych oraz zaprezentowano najczęściej stosowane rozwiązania.
This article addresses the issue of noise in the road infrastructure. A description is given of the requirements for acoustic baffles in the context of the applicable standards and regulations, as well as the most commonly used solutions.
Źródło:
Przegląd Budowlany; 2013, R. 84, nr 12, 12; 33-39
0033-2038
Pojawia się w:
Przegląd Budowlany
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effect of the Cavity Damping on Vehicular Evaluation using the Finite Element Method
Autorzy:
Ferreira, T. S.
Magalhães, P. A.
Moura, F. L.
Powiązania:
https://bibliotekanauki.pl/articles/176986.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
finite element method
acoustic control
trimmed body
numerical experimental correlation
modal damping
Opis:
This work focuses on finding a numerical solution for vehicle acoustic studies and improving the usefulness of the numerical experimental parameters for the development stage of a new automotive project. Specifically, this research addresses the importance of modal cavity damping for vehicle exerts during numerical studies. It then seeks to suggest standardized parameter values of modal cavity damping in vehicular acoustic studies. The standardized value of modal cavity damping is of great importance for the study of vehicular acoustics in the automotive industry because it would allow the industry to begin studies of the acoustic performance of a new vehicle early in the conception phase with a reliable estimation that would be close to the final value measured in the design phase. It is common for the automotive industry to achieve good levels of numerical-experimental correlation in acoustic studies after the prototyping phase because this phase can be studied with feedback from the simulation and experimental modal parameters. Thus, this research suggests values for modal cavity damping, which are divided into two parts due to their behaviour: ξ(x) = −0.0126(x − 100) + 6.15 as a variable function to analyse up to 100 Hz and 6.15% of modal cavity damping constant for studies between 30 Hz and 100 Hz. The sequence of this study shows how we arrived at these values.
Źródło:
Archives of Acoustics; 2016, 41, 1; 87-97
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Use of Acoustic Camera for Noise Sources Localization and Noise Reduction in the Industrial Plant
Autorzy:
Fiebig, Wiesław
Dąbrowski, Damian
Powiązania:
https://bibliotekanauki.pl/articles/178071.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
noise source localization
noise reduction
industrial noise control
acoustic camera
Opis:
The paper presents results of the localization of main noise sources in the industrial plant. Identification of main noise sources was made with an acoustic camera using Beamforming Method. Parallel to the measurements by means of the acoustic camera, sound level measurements on the main noise sources have been performed. Based on the calculations, prediction regarding the noise emission at residential buildings located near to the plant has been determined. Acoustic noise maps have been performed with LEQ Professional software, which includes the 3D geometry of the buildings inside the plant. It has been established that, after introduction of noise reduction measures in the plant, the noise levels at the observation points in the residential area meets the limit values.
Źródło:
Archives of Acoustics; 2020, 45, 1; 111-117
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykorzystanie pomiarów akustycznych do oceny stanu maszyn elektrycznych
Application of acoustic measurements for electrical machines condition assessment
Autorzy:
Gibiec, M.
Miękina, L.
Powiązania:
https://bibliotekanauki.pl/articles/328786.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
ocena stanu technicznego maszyn
sygnały akustyczne
sieci neuronowe
machine technical state control
acoustic signals
neural networks
Opis:
W niniejszym artykule zaprezentowano przykład oceny stanu maszyn elektrycznych na podstawie analizy sygnałów akustycznych. Przedmiotem badań była ocena jakości nowych podzespołów schodzących z linii produkcyjnej. W tym przypadku pierwsze symptomy niepełnej zdatności ujawniają się w dziedzinie sygnałów akustycznych, a dopiero w trakcie dalszej eksploatacji rozwijają się do stadium wykrywanego przez pomiary drganiowe. Podstawą oceny było widmo fali akustycznej ujednolicone dla wszystkich egzemplarzy względem prędkości obrotowej. Wykorzystywanym narzędziem jest odpowiednio przygotowana sieć neuronowa typu Kohonena. Efekty jej działania porównano z wynikami metody minimalnoodległościowej opartej o uśrednione wzorce widmowe.
In this article, an example of electric machines condition assessment is presented. The case studies were new components quality control. In such case first symptoms of unserviceability disclose in acoustic domain and then in later exploitation they develop into form detectable in vibration measurements. The basis of assessement was acoustic wave spectrum normalized in relation to rotating speed. The assessing tool is adequatly prepered neural network of Kohonen's type. Its performance was compared to results of minimum distance method basing on averaged spectrum patterns.
Źródło:
Diagnostyka; 2004, 30, T. 1; 187-190
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Active Transient Sound Radiation Control from a Smart Piezocomposite Hollow Cylinder
Autorzy:
Hasheminejad, S. M.
Rabbani, V.
Powiązania:
https://bibliotekanauki.pl/articles/177572.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
active structural acoustic control (ASAC) thick cylindrical shells
exact elasto-acoustic analysis
time-domain solution
intelligent system
sound field attenuation
Opis:
The linear 3D piezoelasticity theory along with active damping control (ADC) strategy are applied for non-stationary vibroacoustic response suppression of a doubly fluid-loaded functionally graded piezolaminated (FGPM) composite hollow cylinder of infinite length under general time-varying excitations. The control gain parameters are identified and tuned using Genetic Algorithm (GA) with a multi-objective performance index that constrains the key elasto-acoustic system parameters and control voltage. The uncontrolled and controlled time response histories due to a pair of equal and opposite impulsive external point loads are calculated by means of Durbin’s numerical inverse Laplace transform algorithm. Numerical simulations demonstrate the superior (good) performance of the GA-optimized distributed active damping control system in effective attenuation of sound pressure transients radiated into the internal (external) acoustic space for two basic control configurations. Also, some interesting features of the transient fluid-structure interaction control problem are illustrated via proper 2D time domain images and animations of the 3D sound field. Limiting cases are considered and accuracy of the formulation is established with the aid of a commercial finite element package as well as comparisons with the current literature.
Źródło:
Archives of Acoustics; 2015, 40, 3; 359-381
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Perfection of methods of determination of type of defect at the ultrasonic control of elements of rolling stock of railways
Sovershenstvovanie metody opredelenija tipa defekta pri ultrazvukom kontrole ehlementov podvizhnogo sostava zheleznykh dorog
Autorzy:
Kireev, A.
Kirichenko, I.
Powiązania:
https://bibliotekanauki.pl/articles/793338.pdf
Data publikacji:
2012
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
railway rolling stock
rolling stock
acoustic method
nondestructive control
ultrasonic control
piezoelectric transformer
ultrasonic impulsive echo-method
exploitation
safety motion
Opis:
In the article a method allowing to promote authenticity of methods of determination of type of defect at diagnosing of elements of carriage part of rolling stock of railways by an ultrasonic impulsive echo-method is developed.
В статье разработан метод, позволяющий повысить достоверность методов определения типа дефекта при диагностировании элементов экипажной части подвижного состава железных дорог ультразвуковым импульсным эхо-методом Ключевы е слова : подвижной состав железных дорог; акустический метод неразрушающего контроля; ультразвуковой контроль; ультразвуковой дефектоскоп; пьезоэлектрический преобразователь; ультразвуковой импульсный эхо-метод.
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 3
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wellposedness of optimal control problems for systems with unbounded controls and partially analytic generators
Autorzy:
Lasiecka, I.
Powiązania:
https://bibliotekanauki.pl/articles/206185.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
równanie różniczkowe i algebraiczne Riccatiego
differential and algebraic Riccati equations
singular estimate
structural acoustic interactions
thermoelastic plates
unbounded control operators
Opis:
Wellposedness of differential and algebraic Riccati equations for control systems with unbounded control operators is considered. It is shown that the full-classical Riccati theory is recovered for a class of dynamics, whose generators are partially analytic. Partial analyticity is quantitatively expressed by the validity of the so-called "singular estimates", which is imposed on the composition operator E[sup At]B (A is the generator, B is unbounded control operator. This class comprises the PDE coupled systems with hyperbolic and parabolic components. Two illustrative examples are given in the paper: boumdary/point control of thermal plates with hyperbolic character and point control of structural acoustic interactions. The latter are described by wave equation coupled at an interface to a plate equation.
Źródło:
Control and Cybernetics; 2002, 31, 3; 751-777
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization problems for structural acoustic models with thermoelasticity and smart materials
Autorzy:
Lasiecka, Irena
Powiązania:
https://bibliotekanauki.pl/articles/729240.pdf
Data publikacji:
2000
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
structural acoustic model with thermal effects
optimal control problem
smart controls
nonstandard Riccati equations
analyticity of semigroups
Opis:
Optimization problem for a structural acoustic model with controls governed by unbounded operators on the state space is considered. This type of controls arises naturally in the context of "smart material technology". The main result of the paper provides an optimal synthesis and solvability of associated nonstandard Riccati equations. It is shown that in spite of the unboundedness of control operators, the resulting gain operators (feedbacks) are bounded on the state space. This allows to provide full solvability of the associated Riccati equations. The proof of the main result is based on exploiting propagation of analyticity from the structural component of the model into an acoustic medium.
Źródło:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2000, 20, 1; 113-140
1509-9407
Pojawia się w:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Active noise control with a single nonlinear control filter for a vibrating plate with multiple actuators
Autorzy:
Mazur, K.
Pawełczyk, M.
Powiązania:
https://bibliotekanauki.pl/articles/176906.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
active noise-vibration control
active structural acoustic control
adaptive control
nonlinear control
Opis:
Vibrating plates can be used in Active Noise Control (ANC) applications as active barriers or as secondary sources replacing classical loudspeakers. The system with vibrating plates, especially when nonlinear MFC actuators are used, is nonlinear. The nonlinearity in the system reduces performance of classical feedforward ANC with linear control filters systems, because they cannot cope with harmonics generated by the nonlinearity. The performance of the ANC system can be improved by using nonlinear control filters, such as Artificial Neural Networks or Volterra filters. However, when multiple actuators are mounted on a single plate, which is a common practice to provide effective control of more vibration modes, each actuator should be driven by a dedicated nonlinear control filter. This significantly increases computational complexity of the control algorithm, because adaptation of nonlinear control filters is much more computationally demanding than adaptation of linear FIR filters. This paper presents an ANC system with multiple actuators, which are driven with a single nonlinear filter. To avoid destructive interference of vibrations generated by different actuators the control signal is filtered by appropriate separate linear filters. The control system is experimentally verified and obtained results are reported.
Źródło:
Archives of Acoustics; 2013, 38, 4; 537-545
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł

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