Dealing with long lead times when autotuning

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    WhiskyjimJim Manley
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    I’ve finally got the cooker PIDE working.  I’m trying to use the AutoTune feature of the PIDE.  The AutoTune runs and produces a set of gains but I also get the following warning:

    Warning: Observed PV change was too small.
    Warning: Identified process gain is too small.
    Warning: Long deadtime process identified.

    The current set of gains are: P=154.96, I=1634.97, D=0.0129

    Any suggestions on how to deal with this?



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