Optimal Design of Passive Control Systems Using Stiffness Modification and<br/>Pole Assignment and Sliding Mode Control Algorithms<br/>

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Optimal Design of Passive Control Systems Using Stiffness Modification and
Pole Assignment and Sliding Mode Control Algorithms

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 43502 (09)
University: Sharif University of Technology
Department: Civil Engineering
Advisor(s): Ahmadizadeh, Mehdi
Abstract:
A methodology is developed for designing optimum passive energy dissipation systems using active control algorithms. A combination of stiffness reduction and increase of damping is utilized to reduce both acceleration and displacement response. In this method, first an active control system is designed using pole assignment and sliding mode control algorithm. Here, the methods to use the actives algorithms aremodified such that the resulting properties can be achieved by a passive control system using viscous fluid dampers. Next, a passive control system is designed to result in the structural properties close to those extracted from the actively controlled system. It is shown that this method results in control systems that provide structural performances slightly better than, or close to those of ordinarily designed optimum passive systems
Keywords:
Passive Control ; Active Control ; Sliding Mode Control ; Softening Damping ; Poles Assignment Algorithm ; Supplemental Damping

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