To linearize the Water-Tank System block, specify a linearization input and output.
io(1) = linio('watertank/PID Controller',1,'input');
io(2) = linio('watertank/Water-Tank System',1,'openoutput');
Create a linearization option set, and specify the sample time for the linearized model.
options = linearizeOptions('SampleTime',0.1);
Linearize the plant using the specified options.
linsys = linearize(mdl,io,options)
linsys =
A =
H
H 0.995
B =
PID Controll
H 0.02494
C =
H
Water-Tank S 1
D =
PID Controll
linearize