Higher-order sinusoidal input describing functions for the analysis of non-linear systems with harmonic responses
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Cites methods from "Higher-order sinusoidal input descr..."
...If no predistortion is applied and if the excitation signal is distorted due to the excitation device, complex nonlinear models and techniques that are used to describe the nonlinear behaviour of nonlinear systems under test using different approaches (parametric [31] or nonparametric [32]), based on different models such as Generalized Hammerstein model [33, 34], Volterra model [35, 36], or describing functions [37], can lead to erroneous results....
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Cites background or methods from "Higher-order sinusoidal input descr..."
...This definition of the HOSIDF is slightly different from the one used in [3] and is formalized below....
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...This representation of nonlinear effects in the frequency domain is captured by the higher order sinusoidal input describing functions [2], [3], [4], [8], [10], which describe the systems response (gain and phase) at harmonics of the base frequency of a sinusoidal input signal....
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3 citations
References
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Additional excerpts
...Some approaches addressed the describing function analysis [5,6] to replace a non-linear element with a quasi-linear descriptor which gain is a function of input amplitude....
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"Higher-order sinusoidal input descr..." refers background in this paper
...This structure, however, is not a Hammerstein model since the second block is not necessarily linear [14]....
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