Theoretical and Experimental Studies on Hybrid Control of Seismic Structures


This paper presents analytical and experimental studies on a hybrid control system consisting of an active control system and a passive fluid damper. This hybrid control system is built with structural bracing and used to reduce structural seismic response by providing passive and active control forces. In this study, the dynamic interaction between structure and control devices is taken into account. Dynamics of hydraulic actuator and passive fluid damper are established on the basis of experimental analysis. A three-story structure model with hybrid control attached to the first floor is mounted and tested on a shaking table. Dynamic characteristics of the hybrid control system are identified in discrete-time domain. An observer/controller identification (OCID) procedure is used to determine the system Markov parameters, and an eigensystem realization algorithm (ERA) is employed to obtain the state-space model of the hybrid control system.

Meeting Name

1996 12th Conference on Analysis and Computation


Civil, Architectural and Environmental Engineering

Second Department

Mechanical and Aerospace Engineering

Keywords and Phrases

Actuators; Algorithms; Dynamic Response; Earthquake Resistance; Identification (Control Systems); Mechanical Testing; Parameter Estimation; State Space Methods; Structures (Built Objects); Time Domain Analysis

Document Type

Article - Conference proceedings

Document Version


File Type





© 1996 American Society of Civil Engineers (ASCE), All rights reserved.

Publication Date

01 Jan 1996

This document is currently not available here.