Active vibration suppression of a smart beam via self sensing piezoelectric actuator

2009-08-17
Uğur, Arıdoğan
Şahin, Melin
Yaman, Yavuz
Volkan, Nalbantoğlu
In this paper, an active vibration suppression of a smart beam using self-sensing piezoelectric actuator is presented. The smart beam is composed of a cantilever aluminium beam with four surface-bonded piezoelectric patches symmetrically located both side of the beam. Piezoelectric materials can transform mechanical deformation to electric signal and vice versa. This property of piezoelectric materials enables them to be used as an actuator and a sensor. In self-sensing actuator configuration, the piezoelectric material can be used as an actuator and a sensor simultaneously. A special bridge circuit is used to decompose actuator and sensor signal. This bridge circuit includes the electrical model of the piezoelectric material and in general piezoelectric material is modelled as a voltage source with a series capacitor or a charge source with a parallel capacitor. In our study, this bridge circuit is designed and built for voltage source model of piezoelectric material. Following this, frequency response of the system is obtained by using piezoelectric patches as a self-sensing actuator. Then, analytical system model is obtained from the measured frequency response and robust controller is designed for the active vibration control of smart beam. Finally, both free and the first resonance frequency forced vibration results of open and closed loop are presented.
5. Ankara International Aerospace Conference 17-19 August 2009

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Citation Formats
A. Uğur, M. Şahin, Y. Yaman, and N. Volkan, “Active vibration suppression of a smart beam via self sensing piezoelectric actuator,” presented at the 5. Ankara International Aerospace Conference 17-19 August 2009, Ankara, Turkey, 2009, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/86949.