Patent · US Active

Using autocorrelation to detect model mismatch in a process controller

US9904257B2 · kind B2 · utility

1Cited by
18References
8Claims
0Family size

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Inventor

Key dates

Filing dateMay 7, 2012
Grant dateFeb 27, 2018
Priority date—
Expiry dateMay 12, 2034

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG05B17/02
  • WIPO fieldControl
  • WIPO sectorInstruments

Abstract

A process controller adaptation and tuning technique uses a closed loop adaptation cycle that performs an autocorrelation analysis on the prediction error or the control error of a process control system to determine if significant process model mismatch exists or to determine an increase or a decrease in process model mismatch over time. The adaptation and tuning technique may perform a controller tuning cycle when the determined model mismatch raises above a predetermined level.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.