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Robust calculation of simultaneous multichannel blocked force signatures from measurements made in-situ using an adaptive algorithm in time domain

M. Sturm ; A. Moorhouse ; Wolfgang Kropp (Institutionen för bygg- och miljöteknik, Teknisk akustik) ; T. Alber
20th International Congress on Sound and Vibration 2013, ICSV 2013 Vol. 2 (2013), p. 1610-1617.
[Konferensbidrag, refereegranskat]

An adaptive time domain algorithm is derived being capable of recursively reconstructing simultaneous multi-channel force signatures for structures with multi degree of freedom excitation, given the structure's impulse response functions and operational response time histories. It is shown that the method facilitates robust calculation of time domain blocked forces from measurements made in-situ, i.e. when the source is connected to a receiver structure. Thus, independent source characterization for fully assembled structures comprising multiple vibration sources is possible. Numerical and experimental examples for a complex automotive component are used to investigate the influence of noise on the estimation accuracy.



Denna post skapades 2014-04-17. Senast ändrad 2015-01-08.
CPL Pubid: 196893

 

Institutioner (Chalmers)

Institutionen för bygg- och miljöteknik, Teknisk akustik

Ämnesområden

Akustik

Chalmers infrastruktur