User`s guide

LQG Regulation
9-43
Compare the open- and closed-loop response to the white noise input
disturban ces.
dt = 0.01
t = 0:dt:50
wy = sqrt(1/dt) * randn(2,length(t))
lsim(Py(1,2:3),':',cly(1,2:3),'-',wy,t)
The dotted lines correspond to the open-loop response. The simulation results
arecomparabletothoseforthe -axis.
Cross-Coupling Between Axes
The / thickn es s regulation, is a M IMO problem. So fa r you hav e treated
each axis s eparately and closed o ne SISO loop at a ti m e. This design is valid as
long as the two ax es are f airly decoupl ed . U nfortunately, t his rolling mill
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