Biomedical Engineering Reference
In-Depth Information
t
Clock
To Workspace
qS
To Workspace1
qS
qSD
1
s
Integrator
+
-
qS
qE
To Workspace8
Product
Gain
Constant
K1
×
+
qE0
Gain3
-
K2
qES
To Workspace2
qES
qESD
qE
1
s
Integrator1
+
-
Gain1
qES
-K-
Gain2
K3
qPD
qP
1
s
Integrator2
qP
qP
To Workspace3
FIGURE 8.6
SIMULINK model for Eq. (8.34) in Example Problem 8.2.
Eqs. (8.38) and (8.40), and
Figure 8.8 presents the simulation solution with
both models. It is clear that there is an excellent agreement between the two solutions after
the quick phase is completed at 0.5 s. Notice the expected error between
q
P
¼
q
S
ð
0
Þ
q
S
q
ES
:
q
E
and
q
EMM
, and
q
ES
and
Also note that the initial product predicted by the quasi-steady-state approxima-
tion is negative.
q
ESMM
:
