A vibration isolation system in low frequency excitation region using negative stiffness structure for vehicle seat

By T. D. Le, Kyoung Kwan Ahn. 2011

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Beneficial performance of a quasi-zero-stiffness vibration isolator with time-delayed active control (2014, background): “It is shown that the system can offer excellent performance in vibration isolation under force and base excitations at low frequency from theoretical analysis and experiment results [7].”
On the analytical and experimental assessment of the performance of a quasi-zero-stiffness isolator (2014, background): “Le and Ahn (2011) designed a new model based on the mechanism of quasi-zero-stiffness characteristics for improving vibration isolation effectiveness of the vehicle seat, which can perform the vibration isolation at low excitation frequencies.”
Vibration isolation via a scissor-like structured platform (2014, background): “Even for the problems such as large static displacement and low static stiffness of the QZS-VIs, they can also be overcome by introducing some structural or control nonlinearity [6], [9-11].”