High Performance Control Systems
for Multi-Hazard Mitigation

NHERI Lehigh Seminar Series
November 30, 2017 | Noon - 1pm EST

ABSTRACT

Simon Laflamme, PhD
Associate Professor, Iowa State University

High performance control systems (HPCS), including semi-active, active and hybrid supplemental damping systems, are effective solutions to increase structural performance versus multi-hazard excitations. However, the implementation of HPCS within structural systems is still in its infancy, because of the complexity in designing a robust closed-loop control system that can ensure reliable and high mitigation performance. In this seminar, these closed-loop challenges impeding the implementation of HPCS are introduced, with a particular attention to multi-hazards applications. Two devices for HPCS are presented as possible solutions, including a semi-active structural cladding connection and a variable rotary friction device, both developed in collaboration with Lehigh University. Lastly, an intelligent controller that has the particularity to adapt in real-time to different hazard dynamics is briefly discussed, and its performance demonstrated.

ABOUT THE AUTHOR

Dr. Laflamme is an Associate Professor in the Department of Civil, Construction, and Environmental Engineering at Iowa State University. He holds a Courtesy Appointment in the Department of Electrical and Computer Engineering, and is an associate director of the Center for Nondestructive Evaluation. Dr. Laflamme received his Ph.D in Structures and Materials (2011) from the Massachusetts Institute of Technology. He was awarded the Early Achievement in Research Award by Iowa State University in 2017. Dr. Laflamme is currently leading research funded by NSF, AFOSR, and USDOT. His research interests include Structural Control, Smart Systems, and Structural Health Monitoring.

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