Design, analysis and semi-active control of a quasi-zero stiffness vibration isolation system with six oblique springs

Vibration isolation systems with quasi-zero stiffness (QZS) performance have been widely studied because of their characteristics: high static stiffness and low dynamic stiffness. However, the effective displacement range of QZS is usually so small that strongly limits its application existing in real engineering. Thus, this study’ main innovation is to attempt to expand the effective displacement range of the QZS system via a semi-active...