Applications of mixed H2 and H∞ input design in identification

QC 20120117
The objective of this contribution is to quantify benefits of optimal input design compared to the use of standard identification input signals, e.g. PRBS signals for some common, and important, application areas of system identification. Two benchmark problems taken from process control and control of flexible mechanical structures are considered. We present results both when the design is based on knowledge of the true system (in general the optimal design depends on the system itself) and for a practical two step procedure when an initial model estimate is used in the design instead of the true system. The results show that there is a substantial reduction in experiment time and input excitation level. A discussion on the sensitivity of the optimal input design to model estimates is provided.

TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Reglerteknik hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Control Engineering hsv//eng
Identification
Input design
Mechanical systems
Process control
Application area
Bench-mark problems
Excitation levels
Identification input
Mechanical structures
Mixed H
Model estimates
Optimal design
Optimal input design
PRBS signals
Substantial reduction
Two-step procedure
Automation
Control
Design
Identification (control systems)
Optimization
SRA - ICT
SRA - Informations- och kommunikationsteknik

Jansson, HenrikKTH,Reglerteknik,System Identification Group(Swepub:kth)u12i4kmj (author)
Hjalmarsson, Håkan,1962-KTH,Reglerteknik,System Identification Group(Swepub:kth)u10a8l40 (author)
KTHReglerteknik (creator_code:org_t)

By the author/editor: Barenthin, Märta; Jansson, Henrik; Hjalmarsson, Håk ...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Electrical Engin ...; and Control Engineer ...

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