Robust control for structural systems with uncertainties

Sheng-Guo Wang; Paul N. Roschke; H.Y. Yeh

doi:10.1117/12.348671

18 May 1999 Robust control for structural systems with uncertainties

Sheng-Guo Wang, Paul N. Roschke, H.Y. Yeh

Proceedings Volume 3671, Smart Structures and Materials 1999: Smart Systems for Bridges, Structures, and Highways; (1999) https://doi.org/10.1117/12.348671
Event: 1999 Symposium on Smart Structures and Materials, 1999, Newport Beach, CA, United States

Abstract

Natural hazards such as earthquakes and strong wind events place large forces on tall, slender structures and also on long bridges. The structural system usually can be described by a Lagrangian model. In view of numerous uncertainties due to model errors, stress calculations, material properties, and load environments, the system is uncertain. Here, the Lagrangian structural systems is modeled as an uncertain state space model. The paper develops a robust active control approach with uncertainties in the system, control input, and disturbance input matrices. Robust active control provides both robust stability and H_(infinity ) disturbance attenuation. The H_(infinity ) norm of the transfer function from the external disturbance forces to the observed system states is restricted by a prescribed attenuation index. Considered uncertainties are norm-bounded to robust control analysis and design of structural systems.

Citation Download Citation

Sheng-Guo Wang, Paul N. Roschke, and H.Y. Yeh "Robust control for structural systems with uncertainties", Proc. SPIE 3671, Smart Structures and Materials 1999: Smart Systems for Bridges, Structures, and Highways, (18 May 1999); https://doi.org/10.1117/12.348671

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