Specifications

connect
16-40
d =
uc u1 u2 ?
? 0 0 0 0
y1 0 -0.5476 -0.141 0
y2 0 -0.6459 0.2958 0
? 0 0 0 2
Continuous-time system.
Note that the ordering of the inputs and outputs is the same as the block
ordering you chose. Unnamed inputs or outputs are denoted by
?.
To derive the overall block diagram model from
sys, specify the
interconnections and the external inputs and outputs. You need to connect
outputs 1 and 4 into input 3 (
u2), and output 3 (y2) into input 4. The
interconnection matrix
Q is therefore
Q = [3 1 -4
4 3 0];
Note that the second row of Q has been padded with a trailing zero. The block
diagram has two external inputs
uc and u1 (inputs 1 and 2 of sys), and two
external outputs
y1 and y2 (outputs 2 and 3 of sys). Accordingly, set inputs
and outputs as follows.
inputs = [1 2];
outputs = [2 3];
You can obtain a state-space model for the overall interconnection by typing
sysc = connect(sys,Q,inputs,outputs)
a =
x1 x2 x3 x4
x1 -5 0 0 0
x2 0.84223 0.076636 5.6007 0.47644
x3 -2.9012 -33.029 45.164 -1.6411
x4 0.65708 -11.996 16.06 -1.6283
b =