NOISE REDUCTION IN DOUBLE PANEL STRUCTURES BY CAVITY AND PANEL RESONANCE CONTROL

Description of research

The double panel structure, which consists of two panels with air in the gap, is widely adopted in many applications such as aerospace due to its light weight and effective transmission loss at high frequency. However, the resonance of the cavity and the poor transmission loss at low frequency limit its noise control performance. Applying active control forces on the panels or utilizing loudspeakers in the cavity to reduce the noise problem have been discussed in many papers. In our research, the resonance of the cavity and the panels are considered simultaneously to increase the noise transmission loss. A structural acoustic coupled model is developed to investigate the vibration of the two panels, the acoustic resonance in the air cavity, and the control performance. The control design can be optimized through the model by choosing the control actuator, sensor and strategy. The real-time control will be done to verify this control design.

Advisor(s)

Dr.ir. A.P. (Arthur) Berkhoff (Supervisor)

Prof.dr.ir. C.H. (Kees) Slump (Promotor)

Duration

2010 - 2014

Project

IMPEDANCE - Integrated Modules for Power Efficient Distributed Active Noise Cancelling Electronics

Funding institution

Technologiestichting STW

Strategic Research Orientation

WISE - Wireless and Sensor Systems

Links to relevant web pages

http://www.sas.el.utwente.nl/open/research/acoustics

http://www.sas.el.utwente.nl/open/people/Jen-Hsuan%20Ho

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