SSDI Technique Evolution to Improve Attenuation Performances with Random Disturbances

This paper deals with semi-active vibration reduction by means of piezo-actuators shunted to time-variant impedances. Particularly, attention is focused on the Synchronized Switch Damping on Inductance technique applied to single mode control in presence of a random disturbance. Drawbacks of the mentioned method are evidenced, showing that sometimes it can fail. Therefore, an alternative method (which actually is an evolution of SSDI) is proposed and its effectiveness is proved numerically through a model. Such a model is validated experimentally within the paper.