Robust calculation of simultaneous multichannel blocked force signatures from measurements made in-situ using an adaptive algorithm in time domain
Paper i proceeding, 2013

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.


M. Sturm

A. Moorhouse

Wolfgang Kropp

Chalmers, Bygg- och miljöteknik, Teknisk akustik

T. Alber

20th International Congress on Sound and Vibration 2013, ICSV 2013

Vol. 2 1610-1617


Strömningsmekanik och akustik

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