KALMAN FILTER APPROACH FOR THE CONTROL OF SEISMIC-INDUCED BUILDING VIBRATION USING ACTIVE MASS DAMPER SYSTEMS

In this paper, two issues in structural control are discussed. First, the prediction-type Kalman filter approach is used to estimate the ful l-state variables of a building's seismic response from a limited numb er of measurements and the full-state feedback control strategy can be applied. The result is compared with the modal dynamic reduction meth od and traditional full-state feedback control, Secondly, the time-del ay of an actuator is considered in the control strategy. Based on the Pade approximation, a differential equation for the delay-time of the actuator is developed; then the feedback iteration path of the actuato r is included in the control algorithm. Using the example of a 6-story eccentric building with a dual active tuned mass damping system, the above two issues are discussed in relation to a strategy for the contr ol of bending-torsion motion of a building during earthquake excitatio n. (C) 1997 by John Wiley & Sons, Ltd.