Finding the source of nonlinearity in a process with plant-wide oscillation

@article{Thornhill2005FindingTS,
  title={Finding the source of nonlinearity in a process with plant-wide oscillation},
  author={Nina F. Thornhill},
  journal={IEEE Transactions on Control Systems Technology},
  year={2005},
  volume={13},
  pages={434-443}
}
A plant-wide oscillation in a chemical process often has an impact on product quality and running costs and there is, thus, a motivation for automated diagnosis of the source of such a disturbance. This brief describes a method of analyzing data from routine operation to locate the root cause oscillation in a dynamic system of interacting control loops and to distinguish it from propagated secondary oscillations. The novel concept is the application of a nonlinearity index that is strongest at… CONTINUE READING
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