Specifications

Yaw Damper for a 747 Jet Transport
10-3
Yaw Damper for a 747 Jet Transport
This case study demonstrates the tools for classical control design by stepping
through the design of a yaw damper for a 747 jet transport aircraft.
The jet model during cruise flight at MACH = 0.8 and H = 40,000 ft. is
A = [-0.0558 -0.9968 0.0802 0.0415
0.5980 -0.1150 -0.0318 0
-3.0500 0.3880 -0.4650 0
0 0.0805 1.0000 0];
B = [ 0.0729 0.0000
-4.7500 0.00775
.15300 0.1430
0 0];
C = [0 1 0 0
0 0 0 1];
D = [0 0
0 0];
The following commands specify this state-space model as an LTI object and
attach names to the states, inputs, and outputs.
states = {'beta' 'yaw' 'roll' 'phi'};
inputs = {'rudder' 'aileron'};
outputs = {'yaw' 'bank angle'};
sys = ss(A,B,C,D,'statename',states,...
'inputname',inputs,...
'outputname',outputs);
You can display the LTI model sys by typing sys.MATLABrespondswith
a =
beta yaw roll phi
beta -0.0558 -0.9968 0.0802 0.0415
yaw 0.598 -0.115 -0.0318 0
roll -3.05 0.388 -0.465 0
phi 0 0.0805 1 0