Specifications

2 LTI Models
2-36
s + 2
-----
s
To leave certain names undefined, use the empty string '' as in
H = tf(num,den,'inputname',{ 'temperature' ; '' })
Input Groups and Output Groups
In many applications, you may want to create several (distinct or intersecting)
groups of input or output channels and name these groups. For example, you
may want to label one set of input channels as
noise and another set as
controls.
To see how input and output groups (I/O groups) work:
1 Create a random state-space model with one state, three inputs, and three
outputs.
2 Assign the first two inputs to a group named controls, the first output to a
group named
temperature, and the last two outputs to a group named
measurements.
To do this, type
h = rss(1,3,3);
set(h, 'InputGroup',{[1 2] 'controls'})
set(h, 'OutputGroup', {[1] 'temperature'; [2 3] 'measurements'})
h
and MATLAB returns a state-space model of the following form.
a =
x1
x1 –0.64884
b =
u1 u2 u3
x1 0.12533 0 0