Proposed Theory of Semiactive Gains for Smart Dampers in MDOF Systems
Document Type
Article
Publication Date
12-1-2019
Abstract
The use of smart dampers in civil engineering structures for vibration attenuation has proven to be promising in recent years. Nevertheless, evaluating the effectiveness of smart dampers in multiple-degree-of-freedom (MDOF) dynamic systems is a time-consuming task. This hurdle hinders the consideration of potential families of controllers for a reliable design and tuning process. Consequently, the current study develops a probabilistic approach by introducing a new theory of semiactive control gains to enable the solution of highly nonlinear control systems with smart dampers by employing the Lyapunov function. The primary objective is to test a hypothesis that the tuning of controlled semiactive dampers in MDOF systems can be performed analytically without the burden of numerical simulations. As opposed to current simulation methods, the proposed probabilistic approach can be used to significantly reduce computational efforts. Accordingly, the proposed approach is useful for the design and evaluation of the efficacy of smart dampers in MDOF systems, such as multistory buildings and wind turbines. In addition, the developed control theory will enable the use of accelerated performance-based semiactive controller tuning, with a potential to advance innovative technologies for building smart, resilient, and sustainable structures that can survive multiple hazards.
Publication Source (Journal or Book title)
Journal of Structural Engineering (United States)
Recommended Citation
Rezaee, M., & Aly, A. (2019). Proposed Theory of Semiactive Gains for Smart Dampers in MDOF Systems. Journal of Structural Engineering (United States), 145 (12) https://doi.org/10.1061/(ASCE)ST.1943-541X.0002453