Model uncertainty in frequency response based system identification

✍ Scribed by Tong Zhou

• Book ID: 104301072
• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 703 KB
• Volume: 32
• Category: Article
• ISSN: 0167-6911
• DOI: 10.1016/s0167-6911(97)00073-x

✦ Synopsis

Determination of plant nominal model error bound is one of the most essential topics in robust control oriented identification. The objective of this paper is to investigate the structure of plant model uncertainties when a set of corrupted plant frequency response samples are supplied. It is shown that the plant model uncertainties, which result from the "partialness" and "corrttptedness" of the provided plant information, can be represented by structure-fixed, norm-bounded but uncertain matrix-valued functions that perturb a plant nominal model through a linear fractional transformation. These results are very similar to those when plant time domain identification experiment data have been provided. (~) 1997 Elsevier Science B.V.