Simulink Control Design™ - MathWorks

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Operating point search report for the Model scdairframe.

(Time-Varying Components Evaluated at time t=0)

Operating point specifications were successfully met.

States:

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(1.) scdairframe/EOM/ Equations of Motion (Body Axes)/Position

x: 0 dx: 984

x: -3.05e+03 dx: 0

(2.) scdairframe/EOM/ Equations of Motion (Body Axes)/Theta

x: 0 dx: -0.00972

(3.) scdairframe/EOM/ Equations of Motion (Body Axes)/U,w

x: 984 dx: 22.7

x: 0 dx: -1.44e-11 (0)

(4.) scdairframe/EOM/ Equations of Motion (Body Axes)/q

x: -0.00972 dx: 1.72e-16 (0)

Inputs:

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(1.) scdairframe/Fin Deflection

u: 0.00142 [-Inf Inf]

Outputs:

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(1.) scdairframe/q

y: -0.00972 [-Inf Inf]

(2.) scdairframe/az

y: -0.242 [-Inf Inf]

Linearizing the Model

The operating points are now ready for linearization. First, we specify the input and

output points using the following commands:

io(1) = linio('scdairframe/Fin Deflection',1,'input');

io(2) = linio('scdairframe/EOM',3,'output');

io(3) = linio('scdairframe/Selector',1,'output');

Linearize the model and plot the Bode magnitude response for each condition.

sys = linearize('scdairframe',op,io);

bodemag(sys)

2 Linearization