TY - JOUR
T1 - Two-sided damping constraint control strategy for high-performance vibration isolation and end-stop impact protection
AU - Hao, Zhifeng
AU - Cao, Qingjie
AU - Wiercigroch, Marian
N1 - Acknowledgments
The first two authors would like to acknowledge the financial supports from the Natural Science Foundation of China (Grant No. 11372082,11572096) and the National Basic Research Program (973 Program) of China (Grant No. 2015CB057405). ZF Hao would also be indebted to the Scholarship for International Visiting Program of Harbin Institute of Technology and the hospitality of University of Aberdeen.
PY - 2016/12
Y1 - 2016/12
N2 - In this paper, a two-sided damping constraint control strategy is proposed to improve the performance of the quasi-zero stiffness isolator. The new control policy is achieved through switching the damping of isolator between the soft and hard modes that depend on a preset value of the relative displacement (PRD). This control approach can largely lower the isolation frequency while enhancing the effectiveness of isolation in high frequencies and preventing the severity of end-stop impacts. To realize such control objective, two key issues are solved including the suppressing of period-3 solutions that coexist with the desired period-1 orbits and the optimization of PRDs based upon the analysis of two-parameter bifurcations and basins of attraction. Finally, the capability of the proposed system in end-stop impact protection is studied, which shows that it can successfully prevent the impact and quickly stabilize the large-amplitude response into the ideal steady-state motion.
AB - In this paper, a two-sided damping constraint control strategy is proposed to improve the performance of the quasi-zero stiffness isolator. The new control policy is achieved through switching the damping of isolator between the soft and hard modes that depend on a preset value of the relative displacement (PRD). This control approach can largely lower the isolation frequency while enhancing the effectiveness of isolation in high frequencies and preventing the severity of end-stop impacts. To realize such control objective, two key issues are solved including the suppressing of period-3 solutions that coexist with the desired period-1 orbits and the optimization of PRDs based upon the analysis of two-parameter bifurcations and basins of attraction. Finally, the capability of the proposed system in end-stop impact protection is studied, which shows that it can successfully prevent the impact and quickly stabilize the large-amplitude response into the ideal steady-state motion.
KW - Bifurcation analysis
KW - Impact protection
KW - Low-frequency isolator
KW - Piecewise smooth system
KW - SD oscillator with QZS
KW - Two-sided damping constraint
UR - http://www.scopus.com/inward/record.url?scp=84959333578&partnerID=8YFLogxK
U2 - 10.1007/s11071-016-2685-5
DO - 10.1007/s11071-016-2685-5
M3 - Article
AN - SCOPUS:84959333578
VL - 86
SP - 2129
EP - 2144
JO - Nonlinear Dynamics
JF - Nonlinear Dynamics
SN - 0924-090X
IS - 4
ER -