MATLAB CONTROL SYSTEM TOOLBOX 9 Spécifications télécharger pdf (Page 380)

100

101

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 =

1 2 ... 375 376 377 378 379 380 381 382 383 384 385 ... 590 591

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MATLAB CONTROL SYSTEM TOOLBOX 9 Spécifications Page 380

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