Systems for active noise control and active sound control typically use loudspeakers as acoustic sources. In a substantial number of applications there is a need for a flat sound generating device in order to satisfy space limitations due to technical or aesthetic requirements. The research is focused on the development of a flat source structure driven by multiple controlled actuators that can be used to realise a sound source capable of generating low frequency sound of sufficient power to be useful for active noise control applications and audio reproduction.
Description
The research objectives are:
Development of a modelling approach for energy efficiency and two-directional energy conversion of coupled electrical-mechanical-acoustical systems with energy recovery
Performance prediction and performance optimization of actuator systems recovering the internal mechanical energy
Design of a flat smart structure driven by energy-efficient actuators for low frequency sound generation. Validation of the numerical models by means of experimental data
The research can be used to prepare a Ph.D thesis at the University of Twente under supervision of dr. Arthur Berkhoff.
Training will be provided by
1. Scientific Skills Training, comprising local training-through-research, network wide training courses
2. Transferable Skills Training, comprising Local training courses and Network-wide training courses
3. Applied Training – Combining Scientific and Transferable Skills, comprising training through secondments at other partners in the consortium, Training through network-wide technical workshops, training through contributions to international conferences, Training through participation to public ANTARES dissemination and outreach events.
Position:
Early Stage Researcher (ESR)
Required experience:
Experience with piezo-electric transducers, vibro-acoustics simulation and control
Required education:
M.Sc. Mechanical Engineering or M.Sc. Electrical Engineering or M.Sc. Physics or equivalent
Start:
1st October 2014 to 30th September 2015
Duration:
3 years
Nationality:
NATO countries
Primary location:
TNO Technical Sciences, Acoustics and Sonar, Oude Waalsdorperweg 63, 2597AK Den Haag (Netherlands)
Secondments at:
University of Twente, Faculty of Engineering Technology, Applied Mechanics, PO Box 217, 7500AE Enschede (Netherlands), and LMS International, Researchpark Haasrode 1237, Interleuvenlaan 68, 3001 Leuven (Belgium)
Contact:
Dr.ir. A.P. (Arthur) Berkhoff, Senior Scientist, TNO Technical Sciences, Acoustics and Sonar, Oude Waalsdorperweg 63, 2597AK Den Haag (Netherlands), PO Box 96864, 2509JG Den Haag, phone: +31-88 866 6289, fax: +31-88 866 0630, e-mail: arthur.berkhoff@tno.nl, website: www.tno.nl
Candidates are invited to send their application, together with curriculum vitae, marks transcripts, and the names and addresses.
Nr of positions available : 1
Research Fields
Technology - Sound technology
Career Stage
Early stage researcher or 0-4 yrs (Post graduate)
Research Profiles
First Stage Researcher (R1)