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An output‐only damage identification method based on H ∞ theory and state projection estimation error (SP2E)
Author(s) -
Lenzen Armin,
Vollmering Max
Publication year - 2017
Publication title -
structural control and health monitoring
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.587
H-Index - 62
eISSN - 1545-2263
pISSN - 1545-2255
DOI - 10.1002/stc.2003
Subject(s) - identification (biology) , projection (relational algebra) , sensitivity (control systems) , state (computer science) , estimation , computer science , system identification , algorithm , control theory (sociology) , mathematics , engineering , artificial intelligence , data mining , electronic engineering , botany , control (management) , systems engineering , biology , measure (data warehouse)
Summary In this article, a new advantageous approach for damage identification of mechanical structures based on state projection estimation error (SP2E) is proposed. The theoretical foundation relies on output‐only identification, H ∞ theory, estimation error, and state projections. Finally, the proposed damage identification approach is verified by discussing results of laboratory experiments. Therein, structural changes have been applied at a mechanical structure, and the capability to localize them by SP2E has been studied subsequently. By analyzing several different structural alteration positions and extents, an experimental sensitivity study has been conducted, which confirmed the applicability of SP2E for damage localization.