Piezo-Actuated Hydraulic Transducer for Active Noise Reduction
K. Lentner1, F. Hermle1, M. Christmann1, A. Waitschat2, F. Thielecke2, R.M. Behr3
1AIRBUS Group Innovations, München, Germany
2Technische Universität Hamburg-Harburg, Hamburg, Germany
3AIRBUS Group, Bremen, Germany
In modern aircraft hydraulic systems the hydraulic pressure is generated by axial piston pumps. Those pumps also induce unwanted fluid-borne noise (pressure ripple) and herewith structure-borne noise (vibrations). This paper introduces an electrically powered and frequency adaptable noise attenuation device. A piezo ceramic actuator was used as active component. Simulations were done using a numerical optimization process to maximize the output ripple (anti-phase to piston pump ripple). Besides, a prototype was tested in a dedicated fluidborne noise test bench.
ACTUATOR 2014 Manuscript B6.4
Publication date: 09/04/2015
Manuscript B6.4 published in Conference Proceedings ACTUATOR 2014
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