Page 467 - Mechanical Engineers' Handbook (Volume 2)
P. 467
458 Closed-Loop Control System Analysis
Figure 12 Typical block diagram.
3.2 Transfer Functions of Cascaded Elements 2
Many feedback systems have components that load each other. Consider the system of Fig.
16. Assume that e is the input and e is the output. In this system the second stage of the
o
i
circuit (R C portion) produces a loading effect on the first stage (R C portion). The equa-
1
1
2
2
tions for this system are
Figure 13 Basic block diagram reduction rules.
