RELIABILITY ASPECTS OF STRUCTURAL CONTROL
Abstract
To reduce the effect of lateral earthquake ground motion on structures, active control systems can be used. Many different approaches have been applied to find a suitable gain matrix for the control law. Several recent investigations have been summarized and reviewed. In addition, a technique on the basis of the system identification methods is developed and presented. Another technique on the basis of the modal decomposition is developed. Several different types of nonlinearities such as dead-zone, saturation, and combination of both are considered in this thesis. Using simulated earthquake, it is shown that the probability of failure may be reduced by using a perfect control system. However, there is always a time lag between the time when a control force is needed and the time when the required control force can be applied. The effect of such delay time on the reliability of structural control is studied herein.
Degree
Ph.D.
Subject Area
Civil engineering
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