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Actuators for Active Noise Control

  • Thomas KletschkowskiEmail author
Part of the Intelligent Systems, Control and Automation: Science and Engineering book series (ISCA, volume 56)

Abstract

To establish an active control system, it is necessary to integrate actuators. Therefore, this chapter gives a short introduction to acoustical actuation for active noise control that is limited to electro-dynamical actuation by loudspeakers and electro-dynamical exciters. The first actuator type is widely used as secondary sound source. The second one is of special interest, if an elastic structure is to be used as an acoustical source. The equation of motions will be derived from simplified electro-mechanical actuator models and the particular actuator behavior is discussed in frequency domain. A general overview on loudspeakers is given e.g. in (Baranek in J. Acoust. Soc. Am. 26(5):618–629, 1954b) and (Havelock et al. in Handbook of signal processing in acoustics, vol 1, Springer, New York, 2008a). Comments on loudspeaker design and performance evaluation can also be found in (Havelock et al. in Handbook of signal processing in acoustics, vol 1, Springer, New York, 2008a). A detailed description of audio amplifiers is given in (Shea in Amplifier handbook, McGraw-Hill, New York, 1966) and the transfer behavior of electro-dynamical loudspeakers is analyzed e.g. in (Zwicker and Zollner in Elektroakustik, Springer, Berlin, 1984) and (Möser in Technische Akustik, Springer, Berlin, 2005). Sound radiation from vibrating structures has been studied extensively in (Cremer et al. in Structure-borne sound, Springer, Berlin, 1995) and (Fahy and Gardonio in Sound and structural vibration, Elsevier, Amsterdam, 2007).

Keywords

Transfer Function Sound Pressure Sound Source Acoustic Pressure Rigid Base 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.Department of Mechanical Engineering, MechatronicsHelmut-Schmidt-University/University of the Federal Armed Forces HamburgHamburgGermany

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