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This paper describes seven methods to identify a mathematical model for a real process with a time delay. The process is the Process Trainer, PT326 from Feedback Instruments Limited. Six of the methods use the step response data and one of the methods uses the impulse response data for identification.
Kealy, Tony and O'Dwyer, Aidan : Comparison of open and closed loop process identification techniques in the time domain. Proceedings of the 3nd Wismarer Automatisierungssymposium, Wismar, Germany, September, 2001, Paper 1.3-4. doi:10.21427/zzze-te86