DACS Home | Past Projects | Mission | Research Topics | Research Groups | Recent Graduates and Visitors | Recent Publications | QFT Links
Non-Technical Activities | Mechanical and Industrial Engineering | College of Engineering | UMass Amherst
  • TITLE: On Selecting Sensor and Actuator Locations for ANC in Ducts
  • AUTHORS: V.Toochinda, C.V. Hollot and Y.Chait
  • ABSTRACT: In this paper we investigate the effects of microphone and speaker locations on the performance of active noise control in ducts. We study a so-called ``symmetric'' configuration in which the collocated performance microphone/control speaker and the collocated measurement
    microphone/disturbance source pairs are located equidistance from the duct center. By applying an ``alignment angle'' analysis to a duct model, we show this configuration to be prone to plant-disturbance misalignment. As a result, amplification at the measurement microphone and reduced stability margins occur. Stability robustness to modeling uncertainty is improved if the measurement microphone/disturbance source are de-collocated.
  • STATUS: Submitted, IEEE Conference on Decision and Control, 2001.
  • full paper (.pdf, 290 KB)
    •

Back to DACS Laboratory.

Last Updated: January 26, 2001

Copyright & COPY; 2001 University of Massachusetts, Amherst. Produced and maintained by the University of Massachusetts, Mechanical Engineering department. Comments to: chait@ecs.umass.edu. This is an official page of the Mechanical & Industrial Engineering Department. Updated: Spring, 2001.