Abstract
Experimental investigation and modeling of the application of piezoelectric actuators to semi-active piezoelectric shunt vibration control devices are presented. The considered devices utilize the principle that the transmission of vibrations through an interface between two solid objects is controlled by the ratio of their mechanical impedances. Since the mechanical impedance of a material is proportional to its stiffness, an extremely soft element placed between the source of vibrations and the object being isolated from vibrations works as an interface with a high transmission loss of vibrations. It is also known that by connecting a negative capacitor to the piezoelectric actuator it is possible to create an element whose elastic stiffness can be arbitrarily tuned. Therefore, by combining these two principles, very simple and efficient mechatronic systems for the vibration suppression, which consist of a piezoelectric actuator connected to a negative capacitor, have been realized.
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Mokrý, P., Kodejška, M., Václavík, J. (2010). Recent Trends in Application of Piezoelectric Materials to Vibration Control. In: Brezina, T., Jablonski, R. (eds) Recent Advances in Mechatronics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-05022-0_43
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DOI: https://doi.org/10.1007/978-3-642-05022-0_43
Publisher Name: Springer, Berlin, Heidelberg
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