Abstract
This paper presents a new method for motion and vibration controls of a three-dimensional flexible shaking table. The shaking table is need of lightweight for reproducing the earthquake wave and the variety of input signal exactly. However, as the weight of shaking table is reduced, the natural frequencies of vibration modes of the table appear on operating frequency region. Such vibration modes get into problem that may cause spillover instability. So, the research purpose is to control such vibration and motion of the shaking table by using the reduced order modeling technique. Two degree-of-freedom control system is introduced. Control simulations on the discrete model are carried out to demonstrate the effectiveness of the method. Experimental work is shown to demonstrate a final verification.
