Journal
AUTOMATICA
Volume 43, Issue 5, Pages 805-816Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.automatica.2006.11.013
Keywords
nonlinear systems; Volterra series theory; differential equation model; output frequency response
Funding
- Engineering and Physical Sciences Research Council [EP/C528212/1, GR/S55521/01] Funding Source: researchfish
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An expression for the output frequency response function (OFRF), which defines the explicit analytical relationship between the output spectrum and the system parameters, is derived for nonlinear systems which can be described by a polynomial form differential equation model. An effective algorithm is developed to determine the OFRF directly from system simulation or experimental data. Simulation studies demonstrate the significance of the OFRF concept, and verify the effectiveness of the algorithm which evaluates the OFRF numerically. These new results provide an important basis for the analytical study and design of a wide class of nonlinear systems in the frequency domain. (c) 2007 Elsevier Ltd. All rights reserved.
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