227-0689-00L  System Identification

Semester Autumn Semester 2017
Lecturers R. Smith
Periodicity yearly course
Language of instruction English


Abstract Theory and techniques for the identification of dynamic models from experimentally obtained system input-output data.
Objective To provide a series of practical techniques for the development of dynamical models from experimental data, with the emphasis being on the development of models suitable for feedback control design purposes. To provide sufficient theory to enable the practitioner to understand the trade-offs between model accuracy, data quality and data quantity.
Content Introduction to modeling: Black-box and grey-box models; Parametric and non-parametric models; ARX, ARMAX (etc.) models.

Predictive, open-loop, black-box identification methods. Time and frequency domain methods. Subspace identification methods.

Optimal experimental design, Cramer-Rao bounds, input signal design.

Parametric identification methods. On-line and batch approaches.

Closed-loop identification strategies. Trade-off between controller performance and information available for identification.
Literature "System Identification; Theory for the User" Lennart Ljung, Prentice Hall (2nd Ed), 1999.

"Dynamic system identification: Experimental design and data analysis", GC Goodwin and RL Payne, Academic Press, 1977.
Prerequisites / Notice Control systems (227-0216-00L) or equivalent.