Response Computation and Visualization

Analyze model response on time- and frequency-response plots

Functions

sim Simulate response of identified models to arbitrary inputs
sim(idnlarx) Simulate nonlinear ARX model
sim(idnlgrey) Simulate nonlinear ODE model
sim(idnlhw) Simulate Hammerstein-Wiener model
bode Bode plot of frequency response, magnitude and phase of frequency response
bodeplot Plot Bode frequency response with additional plot customization options
bodemag Bode magnitude response of LTI models
step Step response plot of dynamic system
stepplot Plot step response and return plot handle
stepinfo Rise time, settling time, and other step response characteristics
nyquist Nyquist plot of frequency response
nyquistplot Nyquist plot with additional plot customization options
impulse Impulse response plot of dynamic system; impulse response data
impulseplot Plot impulse response and return plot handle
pzmap Pole-zero plot of dynamic system
pzplot Pole-zero map of dynamic system model with plot customization options
iopzmap Plot pole-zero map for I/O pairs of model
iopzplot Plot pole-zero map for I/O pairs and return plot handle
spectrum Output power spectrum of time series models
spectrumplot Plot disturbance spectrum of linear identified models
ffplot Compute and plot frequency response magnitude and phase for linear frequencies
showConfidence Display confidence regions on response plots for identified models
lsim Simulate time response of dynamic system to arbitrary inputs
lsimplot Simulate response of dynamic system to arbitrary inputs and return plot handle
lsiminfo Compute linear response characteristics
identpref Set System Identification Toolbox preferences
findstates(idnlarx) Estimate initial states of nonlinear ARX model from data
findstates(idnlgrey) Estimate initial states of nonlinear grey-box model from data
findstates(idnlhw) Estimate initial states of nonlinear Hammerstein-Wiener model from data
stepDataOptions Options set for step
bodeoptions Create list of Bode plot options
nyquistoptions List of Nyquist plot options
timeoptions Create list of time plot options
getoptions Return @PlotOptions handle or plot options property
setoptions Set plot options for response plot
pzoptions Create list of pole/zero plot options

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