Title :
Identification of a crystal detector using a block structured nonlinear feedback model
Author :
Schoukens, J. ; Gommé, L. ; Van Moer, Wendy ; Rolain, Y.
Author_Institution :
Vrije Univ. Brussel, Brussel
Abstract :
This paper studies the identification of a block structured nonlinear Wiener-Hammerstein system that is captured in the feed forward or the feedback path of a closed loop system. First nonparametric initial estimates are generated for the three dynamic blocks, modelled by their frequency response function, and the static nonlinear system, described using cubic splines. Next a parametric model is identified. Random or periodic excitations can be used in the experiments. The method is illustrated on the identification of an Agilent HP420C crystal detector.
Keywords :
closed loop systems; control system analysis; identification; nonlinear systems; sensors; signal processing equipment; test equipment; Agilent HP420C; Wiener-Hammerstein system; block structured nonlinear feedback model; closed loop system; crystal detector; cubic splines; frequency response function; nonparametric initial estimate; parametric model identification; static nonlinear system; Closed loop systems; Detectors; Feedback loop; Feeds; Instrumentation and measurement; Linear systems; Nonlinear dynamical systems; Nonlinear systems; Output feedback; Parametric statistics; block structure; crystal detector; non linear systems; system identification;
Conference_Titel :
Instrumentation and Measurement Technology Conference Proceedings, 2007. IMTC 2007. IEEE
Conference_Location :
Warsaw
Print_ISBN :
1-4244-0588-2
DOI :
10.1109/IMTC.2007.379031
