Nonlinearity

Nonlinearity detection scheme based on zeroing the initial time response over various intervals and computing the FFT of each, as described in: M. S. Allen and R. L. Mayes, "Estimating the Degree of Nonlinearity in Transient Responses with Zeroed Early-Time Fast Fourier Transforms," in... Platforms: Matlab

Generalized linear models (GLMs) are a natural extension of linear regression models in which eta = X*w is related to y by a fixed nonlinearity and a possibly non-Gaussian noise source. Standard linear regression, logistic regression and Poisson regression are all special types of GLMs.This... Platforms: Matlab

Ok, my approach is very different from the ones I have seen. I followed four premises:a) The pendulum is essential linear, and the nonlinearity of the angle is not relevant. (This is an assumption, and I make no attempt to verify it.)b) Any coupling between n resonators creates n resonance... Platforms: Matlab

There are three M-files:1. third.m, calculates the third-order moment for a time series2. aaft.m, calculates the Amplitude Adjusted Fourier Transform (for more details see: D. Kugiumtzis, Surrogate data test for nonlinearity including monotonic transformations, Phys Rev E, vol. 62, 1, 2000)3.... Platforms: Matlab

Removes nonlinear trend from dataDETRENDNONLIN Removes non-linear trend from a vector.The nonlinearity is removed by subtracting a least-squarespolynomial fit.Y = DETRENDNONLIN(X) subtracts a second order polynomial fit fromthe data vector X.Y = DETRENDNONLIN(X, n) subtracts a polynomial fit of... Platforms: Matlab

ABC++ is a simulator for Chua's Oscillator. It calculates the timeseries, equilibrium points, eigenvalues and eigenplanes for user inputted parameters. It works with both a piecewise linear nonlinearity and a cubic nonlinearity.A Poincare Section analysis tool is also included which works on the... Platforms: Matlab

This function is used to plot combination of 2 different variables from the data set. From the plots, we observe the data characteristics i.e. linearity/nonlinearity to define further type of analysis to do, i.e. linear modelling or nonlinear modelling or hybrid modelling. Platforms: Matlab

Creating an exact digital image of world-class analog audio processors has always been a sought-after goal ???*a*? until Yamaha, the world's largest and most successful manufacturer of quality musical instruments, introduced a revolutionary technology that allows to create highly accurate digital... Platforms: Mac