Title :
Improving the accuracy of autotuning parameter estimates
Author :
Atherton, Derek P.
Author_Institution :
Sch. of Eng., Sussex Univ., Brighton, UK
Abstract :
This paper discusses the inaccuracies involved in applying the describing function to obtaining plant information from autotuning measurements. Simple algorithms are given to improve the results for first order plus time delay plants (FOPTD). Attention is also drawn to the large errors which can occur when using autotuning for an unstable FOPTD plant
Keywords :
delay systems; describing functions; limit cycles; parameter estimation; process control; relay control; tuning; autotuning; describing function; first order systems; limit cycles; parameter estimation; process control; relay control; time delay systems; unstable plant; Delay effects; Delay estimation; Error correction; Extraterrestrial measurements; Frequency measurement; Limit-cycles; Mathematical model; Parameter estimation; Relays; Tuning;
Conference_Titel :
Control Applications, 1997., Proceedings of the 1997 IEEE International Conference on
Conference_Location :
Hartford, CT
Print_ISBN :
0-7803-3876-6
DOI :
10.1109/CCA.1997.627467
