TY - JOUR
T1 - Feedback-Invariant Approach to Time-Delay Estimation for Performance Monitoring
AU - Harrison, Christopher A.
AU - Qin, S. Joe
PY - 2012/7/4
Y1 - 2012/7/4
N2 - A simple time-delay estimation approach that requires temporarily retuning the existing PID controller is presented. Closed-loop output data are fitted with autoregressive moving average models at two different controller tunings. The time delay is determined by using the feedback-invariance principle that the closed-loop impulse response coefficients do not change inside the time-delay window. This approach requires no intervention to plant operation and does not estimate the open-loop process model but the time delay only. The estimated time delay is particularly suitable for use in control performance monitoring. © 2012 American Chemical Society.
AB - A simple time-delay estimation approach that requires temporarily retuning the existing PID controller is presented. Closed-loop output data are fitted with autoregressive moving average models at two different controller tunings. The time delay is determined by using the feedback-invariance principle that the closed-loop impulse response coefficients do not change inside the time-delay window. This approach requires no intervention to plant operation and does not estimate the open-loop process model but the time delay only. The estimated time delay is particularly suitable for use in control performance monitoring. © 2012 American Chemical Society.
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U2 - 10.1021/ie300786g
DO - 10.1021/ie300786g
M3 - RGC 21 - Publication in refereed journal
SN - 0888-5885
VL - 51
SP - 9094
EP - 9100
JO - Industrial & Engineering Chemistry Research
JF - Industrial & Engineering Chemistry Research
IS - 26
ER -