A parameter design method for smart spring vibration suppression system with damping

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Journal of Vibration and Shock ›› 2014, Vol. 33 ›› Issue (23) : 116-121.

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A parameter design method for smart spring vibration suppression system with damping

NI De ZHU Ru-peng FU Qiu-ju BAO He-yun LU Feng-xia

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Abstract

A design method for system parameters of smart spring system with linear viscous damping under harmonic excitation is presented, which can make the smart spring system implement both stiffness and damping control. First, the analytical solutions of frequency response characteristics of smart spring system were deduced by equivalent linear method. Then, the influence of system parameters on the amplitude frequency characteristics of system was analyzed. The results show that the amplitude frequency characteristic curve cluster has a common point for the smart spring system without viscous damping, but the common point will disappear for the system with damping. The main system parameters that affect the amplitude frequency characteristics of system are the mass ratio, stiffness ratio, damping ratio and control parameter. And the system parameters of which affect the size of required actuator force to make the two mass-spring systems become fully coupled are damping ratio and relative damping ratio. Based on the conclusions of foregoing parameter analysis, the selection scope of system parameters of smart spring system was determined and the steps of parameter design were proposed.

Key words

parameter design / vibration suppression / smart spring / piezoceramics / dry friction / stiffness / damping

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NI De ZHU Ru-peng FU Qiu-ju BAO He-yun LU Feng-xia. A parameter design method for smart spring vibration suppression system with damping[J]. Journal of Vibration and Shock, 2014, 33(23): 116-121