Preliminary results and simulation of an active pendulum system for a three floor building.

The mitigation of vibrations caused by seismic events has been a long term interest of structural control engineers in their effort to ensure the protection of both civil structures and human occupants. Several control strategies have been used as active vibration suppression methods, especially optimal control strategies such as the linear quadratic regulator. In this paper, a fractional order linear quadratic regulator is designed to cope with the disturbances that may occur in civil structures in the event of an earthquake. The case study consists in a three floor structure equipped with sensors and an active pendulum system to suppress unwanted vibrations. The simulation results show that the proposed controller can effectively achieve the mitigation of structural vibrations. [ABSTRACT FROM AUTHOR]