CONTROL SYSTEM TOOLBOX Frequency-domain analysis.
ltiview - Response analysis GUI (LTI
General. Viewer).
ctrlpref - Set Control System Toolbox bode - Bode diagrams of the frequency
preferences. response.
ltimodels - Detailed help on the various types bodemag - Bode magnitude diagram only.
of LTI models. nyquist - Nyquist plot.
ltiprops - Detailed help on available LTI margin - Gain and phase margins.
model properties. allmargin - All crossover frequencies and
related gain/phase margins.
Creating linear models.
tf - Create transfer function models. Classical design.
zpk - Create zero/pole/gain models. sisotool - SISO design GUI (root locus and
ss - Create state-space models. loop shaping techniques).
set - Set/modify properties of LTI rlocus - Evans root locus.
models.
Time delays.
Data extraction. hasdelay - True for models with time delays.
tfdata - Extract numerator(s) and pade - Pade approximation of time delays.
denominator(s).
zpkdata - Extract zero/pole/gain data.
ssdata - Extract state-space matrices. Overloaded arithmetic operations.
get - Access values of LTI model + and - - Add and subtract systems (parallel
properties. connection).
* - Multiply systems (series
Conversions. connection).
tf - Conversion to transfer function.
zpk - Conversion to zero/pole/gain. Demonstrations.
ss - Conversion to state space. Type "demo" or "help ctrldemos" for a list of
c2d - Continuous to discrete conversion. available demos.
Model dynamics. Transforms.
dcgain - D.C. (low frequency) gain. laplace - Laplace transform.
bandwidth - System bandwidth. ilaplace - Inverse Laplace transform.
pole, eig - System poles. ztrans - Z-transform.
zero - System (transmission) zeros. iztrans - Inverse Z-transform.
pzmap - Pole-zero map.
damp - Natural frequency and damping of
system poles.
esort - Sort continuous poles by real part.
dsort - Sort discrete poles by magnitude.
Time-domain analysis.
ltiview - Response analysis GUI (LTI
Viewer).
step - Step response.
impulse - Impulse response.
initial - Response of state-space system with
given initial state.
lsim - Response to arbitrary inputs.
gensig - Generate input signal for LSIM.