National Instruments Xmath

Chapter 6 Tutorial

Generate Figure 6 -11 :

tvec=0:(140/99):140;

compare(syscl,sysclr,tvec,{type=7})

f11=plot({keep,legend=["original","reduced"]})

Figure 6-11. Step Response with wtbalance

Figures6-9, 6-10, and 6-11 are obtained for wtbalance with the option

"input spec". Evidently, there is little difference between this and the

result with the option "match". One notices marginally better matching in

the region of interest (0.1 to 5 rad per second) at the expense of matching

at other frequencies. The weighted Hankel singular values again indicate

that it is reasonable to seek a second order controller.