MATLAB CONTROL SYSTEM TOOLBOX 9 Guide de l'utilisateur télécharger pdf (Page 489)

To plot the initial condition responses of several LTI models on a single figure,

initial(sys1,sys2,...,sysN,x0)

initial(sys1,sys2,...,sysN,x0,t)

(see impulse for details).

Wheninvokedwithlefthandarguments,

[y,t,x] = initial(sys,x0)

[y,t,x] = initial(sys,x0,t)

return the output response y, the time vector t used for simulation, and the

state trajectories

x. No plot is drawn on the screen. The array y hasasmany

rows as time samples (length of

t) and as many columns as outputs. Similarly,

x has length(t) rows and as many columns as states.

Example Plottheresponseofthestate-spacemodel

0.5572– 0.7814–

1.9691 6.4493

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MATLAB CONTROL SYSTEM TOOLBOX 9 Guide de l'utilisateur Page 489