Full-scale demonstration tests of cabin noise reduction using activevibration control

Simpson, Myles A.; Luong, T. M.; Fuller, Chris R.; Jones, James D.

doi:10.2514/3.46014

Cited by 32 publications

(10 citation statements)

References 2 publications

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“…Since the noise field in an enclosure or a large-dimension duct is more complicated than in a narrow duct, it is generally necessary to use a multiple-channel ANC system with several secondary sources, error sensors, and perhaps even several reference sensors. Some of the best-known applications are the control of exhaust "boom" noise in automobiles [81]- [84], earth-moving machines [85], and the control of propeller-induced noise in flight cabin interiors [86]- [88]. Other ANC applications, such as vibration control in complex mechanical structures, also require multiple channels.…”

Section: Multiple-channel Ancmentioning

confidence: 99%

Active noise control: a tutorial review

Kuo

Morgan²

1999

Proc. IEEE

1,084

529

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Active noise control (ANC) is achieved by introducing a canceling "antinoise" wave through an appropriate array of secondary sources. These secondary sources are interconnected through an electronic system using a specific signal processing algorithm for the particular cancellation scheme. ANC has application to a wide variety of problems in manufacturing, industrial operations, and consumer products. The emphasis of this paper is on the practical aspects of ANC systems in terms of adaptive signal processing and digital signal processing (DSP) implementation for real-world applications. In this paper, the basic adaptive algorithm for ANC is developed and analyzed based on single-channel broad-band feedforward control. This algorithm is then modified for narrow-band feedforward and adaptive feedback control. In turn, these single-channel ANC algorithms are expanded to multiple-channel cases. Various online secondary-path modeling techniques and special adaptive algorithms, such as lattice, frequency-domain, subband, and recursive-least-squares, are also introduced. Applications of these techniques to actual problems are highlighted by several examples.

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Section: Multiple-channel Ancmentioning

confidence: 99%

Active noise control: a tutorial review

Kuo

Morgan²

1999

Proc. IEEE

1,084

529

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“…For that reason, ASAC can be easier integrated in buildings, as it does not require the use of loudspeakers or error microphones in the receiving environment. However there are not tested applications on glazed facades, and most of the experiments were carried out in the automotive and aeronautic fields of research: for example feed-forward ASAC tests have been performed in a test section comprising the aft portion of a furnished DC-9 aircraft to reduce cabin noise [4]. In addition, piezoelectric zirconate titanate (PZT) patch actuators were bonded to the cylinder surface of an aircraft fuselage excited acoustically by an exterior loudspeaker noise source to reduce interior noise [5].…”

Section: Active Control Through Asac Systemsmentioning

confidence: 99%

“…As far as concerns the choice of actuators, from a literature survey it was found out that two main typologies of PZT actuators are presently available on the market: piezoelectric patches, successfully experimented in [8], and piezoelectric stack actuators, already tested in [9]. As the first is a rectangular shaped patch, it may interfere with visibility, instead the second one is very small but need a stiffener to work properly.…”

Section: Technological Feasibilitymentioning

confidence: 99%

First Numerical and Experimental Results on Active Controlled Glazed Facades

Naticchia¹,

Carbonari²

2006

Proceedings of the International Symposium on Automation and Robotics in Construction (IAARC)

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Both recent legislation codes and the evidence of the effects of high noise levels on human health have directed research activities towards the problem of the improvement of Sound Transmission Loss (STL) of glazed facades in the frequency range (low-medium) where passive means were already shown to be not effective. Adopting active control systems may help to cover the lower set of frequencies, where traffic and railway noise produces high level of disturbance. In this paper it is shown how Piezoelectric (PZT) stack actuators may be installed on large curtain walls, improving their STL. They are demonstrated to be particularly useful to avoid drops of STL in correspondence of resonance frequencies of windows, hence increasing their overall STL. Some simulations on the noise reduction obtained inside a standard building enclosure were performed, comparing the noise transmitted by a standard window with the corresponding active controlled one and several technologies for the installation of PZT actuators are suggested.

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“…Almost all of the studies have involved the implementation of an active control system for reducing acoustic radiation from a vibrating structure, also referred to as structure-borne noise. [4][5][6] Within active control systems, the piezoelectrics require complex amplifiers and associated sensing electronics. These can be eliminated in passive shunting applications where the only external element is a simple passive electrical circuit.…”

Section: Introductionmentioning

confidence: 99%

Passive acoustic radiation control for a vibrating panel with piezoelectric shunt damping circuit using particle swarm optimization algorithm

Jeon

2009

J Mech Sci Technol

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This paper presents a new acoustic radiation optimization method for a vibrating panel-like structure with a passive piezoelectric shunt damping system in order to minimize well-radiating modes generated from the panel. The optimization method is based on an idea of using the p-version finite element method(p-version FEM), the boundary element method(BEM), and the particle swarm optimization algorithm(PSOA). Optimum embossment design for the vibrating panel using the PSOA is first investigated in order to minimize noise radiation over a frequency range of interest. The optimum embossment design works as a kind of stiffener so that well-radiating natural modes are shifted up with some degrees. The optimized panel, however, may still require additional damping for attenuating the peak acoustic amplitudes. A passive shunt damping system is thus employed to additionally damp the well-radiating modes from the optimized panel. To numerically evaluate the acoustic multiple-mode damping capability by a shunt damping system, the integrated p-version FEM/BEM for the panel with the shunt damping system is modeled and developed by MATLAB. Using the PSOA, the optimization technique for the optimal multiple-mode shunt damper is investigated in order to achieve the optimum damping performance for the well-radiating modes simultaneously. Also, the acoustic damping performance of the shunt damping circuit in the acoustic environment is demonstrated numerically and experimentally with respect to the realistically sized panel. The simulated result shows a good agreement with that of the experimental result.

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Full-scale demonstration tests of cabin noise reduction using activevibration control

Cited by 32 publications

References 2 publications

Active noise control: a tutorial review

Active noise control: a tutorial review

First Numerical and Experimental Results on Active Controlled Glazed Facades

Passive acoustic radiation control for a vibrating panel with piezoelectric shunt damping circuit using particle swarm optimization algorithm

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