Dealing with long lead times when autotuning

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  • April 3, 2019 at 2:20 pm #3938
    whiskyjimwhiskyjim
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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?

      Thanks,

      Jim

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