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Process control with unreliable communications

  • US 20070112905A1
  • Filed: 08/04/2006
  • Published: 05/17/2007
  • Est. Priority Date: 10/25/2005
  • Status: Active Grant
First Claim
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1. A method of controlling a process with a control signal, the method comprising the steps of:

  • implementing iterations of a control routine to generate the control signal;

    when an indication of a response to the control signal is unavailable, maintaining a feedback contribution to the control signal over one or more of the iterations of the control routine; and

    modifying the feedback contribution upon receiving the response indication;

    wherein the modifying step comprises determining the feedback contribution in accordance with an elapsed time between the received response indication and a previous communication of the response indication.

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