gensig
Generate test input signals for lsim
Syntax
[u,t] = gensig(type,tau)
[u,t] = gensig(type,tau,Tf,Ts)
Description
[u,t] = gensig(
generates a scalar signal type,tau) u of class type and
with period tau (in seconds). The following types
of signals are available.
gensig returns a vector t of
time samples and the vector u of signal values
at these samples. All generated signals have unit amplitude.
[u,t] = gensig(
also specifies the time duration type,tau,Tf,Ts) Tf of the signal
and the spacing Ts between the time samples t.
You can feed the outputs u and t directly
to lsim and simulate the response of a single-input
linear system to the specified signal. Since t is
uniquely determined by Tf and Ts,
you can also generate inputs for multi-input systems by repeated calls
to gensig.
Examples
Generate a square wave with period 5 seconds, duration 30 seconds, and sampling every 0.1 second.
[u,t] = gensig('square',5,30,0.1)
Plot the resulting signal.
plot(t,u) axis([0 30 -1 2])
