Seyyed Farhad Mirfakhraei - Ph.D. of Structural Engineering, Depaertment of Civil and Infrastructure Engineering,Faculty of Civil Engineering, University of RMIT, Melbourne, Australia.
Gholamreza Andalib - Department of Water Resources Engineering, Faculty of Civil Engineering, University of Tabriz, Tabriz, Iran
Ricky Chan - Associate Professor, Department of Civil and Infrastructure Engineering, Faculty of Civil Engineering, University of RMIT, Melbourne, Australia.

In this paper a numerical investigation of installation of actuator in a toggle configuration for decreasing of active control forces in engineering structures has been carried out. During the past two decades, researchers have been focused to prevent the vibration of tall building from strong earthquakes. For achieving this purpose, they applied either massive conventional bracing or passive energy dissipation dampers. Subsequently, they developed active control systems in structures to resist against the high seismic loads. However, this later method eventuates installing massive actuators in building which are not only very costly and uneconomically but also needs large electricity power. In this research, using by known earthquakes, investigation of the effects of the toggle configuration on actuator forces has been performed numerically. For numerical investigation, active tendon control system was selected as a comparison. The numerical investigation shows significant reduction in actuator forces through using toggle configuration. Finally, comparing results through the numerical processe express high matching that relies on mitigation of control forces in the toggled active model.

Active control system, Control forces, Structural active vibration control