Design aspects for feed-forward multiple-input active noise controllers

  • Authors:

  • E. Esmailzadeh;A. R. Ohadi

  • Affiliations:

  • Department of Mechanical Engineering, Sharif University of Technology, Tehran, I. R. of Iran;Department of Automotive Engineering, Iranian University of Science & Technology, Tehran, I. R. of Iran

  • Venue:
  • Iranian Journal of Science and Technology
  • Year:
  • 2002

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Abstract

The use of adaptive feed-forward controllers has proven-to be a very successful strategy for controlling noise and vibration in a variety of applications. One reason is that the feed-forward controller is an open loop controller, which can be designed to cancel the undesired noise in a position with any accuracy. However, the feed-forward controller requires an input signal, called a reference signal, correlated to the noise source. Consequently, a single reference controller can only reduce noise radiated from a single noise source. In many applications, there is a need to attenuate noise produced by several noise sources. In this paper, three different structures, single, modulating and individual controller, for multiple input feed-forward controllers have been studied and some design aspects are investigated.