Process control with unreliable communications
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United States of America Patent
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Nov 17, 2009
Grant Date -
May 17, 2007
app pub date -
Aug 4, 2006
filing date -
Oct 25, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Disclosed are methods and devices for controlling a process with a control signal. Iterations of a control routine are implemented to generate the control signal, and when an indication of a response to the control signal is unavailable, a feedback contribution to the control signal is maintained over one or more of the iterations of the control routine. The feedback contribution is then modified upon receiving the response indication, in which the feedback contribution is determined in accordance with an elapsed time between the received response indication and a previous communication of the response indication.
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