Set point and identifiability in the closed loop with a minimum-variance controller

✍ Scribed by R. Gessing; M. Błachuta

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 463 KB
• Volume: 4
• Category: Article
• ISSN: 0967-0661
• DOI: 10.1016/0967-0661(96)00049-4

✦ Synopsis

The meaning of nonzero set points for the identifiability of the ARMAX model parameters in a closed-loop system with a minimum-variance controller is explained and discussed. It is pointed out that, in the case of a zero set point and an ARMAX model resulting from the discretization of a continuous-time plant, the model parameters cannot be identified in a closed-loop system with a minimum-variance controller. It is also shown that in the case of an appropriately varying set point or the existence of a delay in the plant, the identifiability conditions of the parameters can be fulfilled.