6) The following is a block diagram of a feedback control for a DC motor Voltage e(s) speed 5 350(1– u) 30s +1 Uc(s) Voltage rpm/min 1/350 i) Assuming there is no load (i.e. u=0), Simplify the diagram and find out the closed loop transfer function. Find out the closed-loop time constant and the closed loop system gain. If the load changes, say u=0.5, how does it affect the closed-loop time constant and the closed-loop system gain? ii) 111) What are the main advantages of the feedback system compared with the motor alone?

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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Question
6)
The following is a block diagram of a feedback control for a DC motor
Voltage
e(s)
speed
5
350(1- и)
30s +1
Uc(s)
Voltage
rpm/min
1/350
i)
Assuming there is no load (i.e. =0), Simplify the diagram and find out
the closed loop transfer function. Find out the closed-loop time
constant and the closed loop system gain.
If the load changes, say u=0.5, how does it affect the closed-loop time
constant and the closed-loop system gain?
11)
What are the main advantages of the feedback system compared with
the motor alone?
111)
Transcribed Image Text:6) The following is a block diagram of a feedback control for a DC motor Voltage e(s) speed 5 350(1- и) 30s +1 Uc(s) Voltage rpm/min 1/350 i) Assuming there is no load (i.e. =0), Simplify the diagram and find out the closed loop transfer function. Find out the closed-loop time constant and the closed loop system gain. If the load changes, say u=0.5, how does it affect the closed-loop time constant and the closed-loop system gain? 11) What are the main advantages of the feedback system compared with the motor alone? 111)
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