Robust control law for a friction-based semiactive controller of a two-span bridge

Ningsu Luo; Jose Rodellar; Rodolfo Villamizar; Josep Vehi

doi:10.1117/12.482706

18 August 2003 Robust control law for a friction-based semiactive controller of a two-span bridge

Ningsu Luo, Jose Rodellar, Rodolfo Villamizar, Josep Vehi

Proceedings Volume 5057, Smart Structures and Materials 2003: Smart Systems and Nondestructive Evaluation for Civil Infrastructures; (2003) https://doi.org/10.1117/12.482706
Event: Smart Structures and Materials, 2003, San Diego, California, United States

Abstract

This paper addresses the problem of formulating a feedback control law for the semiactive control of a class of two-span bridge, which is equipped with controllable friction devices at the joints between the columns and the deck. A finite element model is available to represent the essential dynamical features of the bridge. Based on this model, a Lyapunov-based robust semiactive control law is designed, which uses feedback from the nodes where the devices are located. Two sources of uncertainties are considered in the design: a first order actuator dynamics and a seismic excitation at the column supports. After the formulation of the control law, numerical tests are performed to assess the efficiency of the control scheme to reduce the response of the bridge.

Citation Download Citation

Ningsu Luo, Jose Rodellar, Rodolfo Villamizar, and Josep Vehi "Robust control law for a friction-based semiactive controller of a two-span bridge", Proc. SPIE 5057, Smart Structures and Materials 2003: Smart Systems and Nondestructive Evaluation for Civil Infrastructures, (18 August 2003); https://doi.org/10.1117/12.482706

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