Abstract
Vibrations are problems encountered at almost every technical application when there are moving parts or fluids included. Upon the need for lightweight structures, especially in aerospace applications or electric mobility, conventional damping concepts are insufficient because of their extra-weight and low performance at low frequencies. Measures for active noise and vibration reduction have the potential to solve the drawbacks of passive systems. However, a limitation of these concepts arises from the need for complex system models for deriving the controllers. This leads to another possibility to reduce vibrations consisting of piezoelectric transducers attached to the structure and connected to hybrid electric networks. Within this paper, the basic principles of shunt damping, two hybrid electric networks circuits for shunted damping and the experimental validation of a damped system will be shown. Finally—as a challenging example—a circular saw blade is equipped with piezoelectric transducers and negative capacitance hybrid electric networks to reduce the vibration and noise amplitude excited by the cutting process.
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Acknowledgments
This project was funded by German Research Foundation (DFG) within the Priority Program SPP1156 “Adaptronics for Machine Tools”.
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Pohl, M., Wiedemann, M. (2013). Noise and Vibration Reduction with Hybrid Electronic Networks and Piezoelectric Transducers. In: Wiedemann, M., Sinapius, M. (eds) Adaptive, tolerant and efficient composite structures. Research Topics in Aerospace. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-29190-6_33
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DOI: https://doi.org/10.1007/978-3-642-29190-6_33
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