Are anti-aliasing filters really necessary for sampled-data control?

  • Authors:
  • Marian J. Błachuta;Rafał T. Grygiel

  • Affiliations:
  • Department of Automatic Control, The Silesian University of Technology, Gliwice, Poland;Department of Automatic Control, The Silesian University of Technology, Gliwice, Poland

  • Venue:
  • ACC'09 Proceedings of the 2009 conference on American Control Conference
  • Year:
  • 2009

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Abstract

In the paper the role of anti-aliasing filters is revised based on control quality assessment of various setups of analog filters used prior to sampling, or their lack. Numerical results show that contrary to common belief possible benefits gained from anti-aliasing filters are very restricted.