SI100 EE quiz 8
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姓名
____________
学号
____________
Compared with the open-loop system, the main difference in closed-loop system is that it has a
Feedback
Actuator
Process
Desired output
For a feedback control diagram in the figure below, which of the following conclusion
CANNOT
be derived?
The open-loop gain is G(s)
The closed-loop gain is [G(s)]/[1+G(s)H(s)]
The actual output can be controlled by adjusting Gc (s)
The measured error send to the controller is X(s)-Y(s)
The name of PID controller implies the composition of three parts in the controller.
P part reflects the
1
error;
I part reflects the
2
error;
D part reflects the
3
error.
A.Current
B.Past
C.Future
D.Measurement
E.Disturbance
For a typical PID controller.
1
part can reduce the static error to zero,
And
2
part can suppress the overshot in the process.
A.P
B.I
C.D
Which controller responds to the step function as shown in the figure below?
PID
PI
PD
P
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