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Unformatted text preview: still well represents the cubic nonlinearity of the system, but the input versus output plot completely fails in identifying the nonlinearity, as shown in Figs.A(e) and (f), respectively. k / ) ( ) ( 3 t y In conclusion, the zero-memory nonlinearity can be well identified from the probability density estimate of the output, and, the input versus output plot, when the input is normal distributed. However, as the dynamic system is followed after the zero-memory nonlinearity, the input versus output plot tends to fail in identifying the nonlinearity. MAE 591 RANDOM DATA C. W. Lee -10 10 1 PDF input output-10 10-10 10 INPUT OUTPUT (a) (b) -10 10 1-10 10-10 10 INPUT (c) (d) -10 10 1-10 10-10 10 INPUT (e) (f) Figure A. Nonlinear system with a cuber...
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- Spring '09