
(e) The state trajectories are shown in Figure 7.70.
(f) A similar procedure to the one used in parts (a) through (e) establishes four distinct steady-state
operating points (
H
1
, H
2
) where H
1
is one of the four values 0.125(H
1
)
ss
¼ 2 ft, 0.375(H
1
)
ss
¼6 ft,
0.675(H
1
)
ss
¼10 ft, 0.875(H
1
)
ss
¼14 ft. The corresponding values of H
2
and F
0
are shown in
Table 7.7.
(g) The nonlinear and linearized system responses for both tanks are shown in Figures 7.71
and 7.72.
The static nonlinear operating curves for each tank are shown in Figure 7.73, and the state
trajectories of the linearized and nonlinear systems are shown in Figure 7.74. The operating points
listed in Table ...