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Thesis > Central Library of Shahrood University > Civil & Architectural Engineering > MSc > 2005
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Abstarct: Active control methods are the new and effective methods in the control of vibration of the
building and the structures under the effects of earthquake and high wind .One of the fundamental parameters of the active control systems , that affects the performance of such
systems , is synchronization of incoming data from the sensor and outgoing controlling command from the controllers to the actuators .However there is a time delay between the
the incoming and outgoing signals of the control system , which is due to the natural
characteristics of the system hardware .The time delay decrease the stability and overall
performance of the control system.In this work,to suppress or improve the undesired effects
of the time delay , study on the most important and new methods , such as optimal control
with predictive performance index and Lqr performance index ,root locus, phase-shift ,pade
approximation ,state-augmented , recursive response , smith’s predictor and controllability
baxsed stabilization method ,has been accomplished .The research indicates that the optimal
control algorithms make better improvement with respect to the non-optimal control and are suitable for the large time delays .while in the non-optimal control algorithms , if the time delay become large ,the stability of the controlled structures wouldn’t be guaranteed .
Keywords:
#Active control structures #time delay compensation #optimal control #building stability #earthquake Link
Keeping place: Central Library of Shahrood University
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Keeping place: Central Library of Shahrood University
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