Sensitivity and validity study of generalised frequency response functions
by Liang-Min Li, Steve A. Billings
International Journal of Computer Applications in Technology (IJCAT), Vol. 41, No. 1/2, 2011

Abstract: For linear systems the frequency response function (FRF) can be considered as inherent and invariant, that is, totally independent of input signals, which makes it powerful in many applications such as design, analysis and control. While for the weakly non-linear systems where generalised frequency response functions (GFRFs) play a similar role as the FRF to linear systems, the interpretations of the GFRFs with respect to different input situations can be argued. In this paper the dependence and independence of input signal amplitudes for generalised frequency response functions are discussed based on parametric modelling.

Online publication date: Thu, 01-Sep-2011

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