Control Systems Engineering
7th Edition
ISBN: 9781118170519
Author: Norman S. Nise
Publisher: WILEY
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Textbook Question
Chapter 12, Problem 17P
The open-loop system of Problem 14 is represented as shown in Figure P12.4. If the output of each block is assigned to be a state variable, design the controller gains for feedback from these state variables. [Section: 12.4]
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1. Give an example of open loop and closed loop system (one example each). Also state the input, control system, feedback and output parameter.
Example.
1. Open Loop - Water Heater:
Input - Water Temperature (Cold)
System - Heating Element
Output - Water Temperature (Hot)
2. Closed Loop - Air-conditioning System
Input - Desired Room Temperature
Control - Motor controller/Compressor/ACU
Feedback - Temperature Sensing
Output - Room Temperature
9
Reduce the following block-diagram into one block. (Describe the control system with one
transfer function and write it.) *
W2
W1
W3
The
Gilles & Retzbach model of a distillation column, the system model includes the dynamics of a boiler, is driven by the inputs of steam flow and
the flow rate of the vapour side stream, and the measurements are the temperature changes at two different locations along the column. The state
space model is given by:
x =
0 00
-30.3
0.00012 -6.02 0 0
0 -3.77 00
0
-2.80 0 0
Is the system?:
a. unstable
b.
C.
not unstable
x+
6.15
0
0
0
0
3.04
0 0.052
not asymptotically stable
d. asymptotically stable
-1
u y =
0
0
0
0
-7.3
0
0
-25.0
X
Chapter 12 Solutions
Control Systems Engineering
Ch. 12 - Prob. 1RQCh. 12 - Prob. 2RQCh. 12 - 3. Different signal-flow graphs can represent the...Ch. 12 - Prob. 4RQCh. 12 - Under what conditions can inspection of the...Ch. 12 - In order to determine controllability...Ch. 12 - Prob. 7RQCh. 12 - Prob. 8RQCh. 12 - Prob. 9RQCh. 12 - Prob. 10RQ
Ch. 12 - Prob. 11RQCh. 12 - Prob. 12RQCh. 12 - Prob. 13RQCh. 12 - Prob. 14RQCh. 12 - 15. In order to effect a complete observer design,...Ch. 12 - Under what conditions can inspection of the...Ch. 12 - 17. In order to determine observability...Ch. 12 - Prob. 1PCh. 12 - Prob. 2PCh. 12 - 3. The following open-loop transfer functions can...Ch. 12 - Prob. 4PCh. 12 - Prob. 5PCh. 12 - Prob. 6PCh. 12 - Prob. 7PCh. 12 - Prob. 8PCh. 12 - Prob. 9PCh. 12 - Prob. 10PCh. 12 - Prob. 11PCh. 12 - Prob. 12PCh. 12 - Prob. 13PCh. 12 - Prob. 14PCh. 12 - Prob. 15PCh. 12 - Repeat Problem 14 assuming that the plant is...Ch. 12 - The open-loop system of Problem 14 is represented...Ch. 12 - Prob. 18PCh. 12 - Prob. 20PCh. 12 - Prob. 21PCh. 12 - Prob. 22PCh. 12 - Prob. 23PCh. 12 - Prob. 24PCh. 12 - Prob. 26PCh. 12 - Prob. 27PCh. 12 - Prob. 29PCh. 12 - Prob. 30PCh. 12 - Prob. 31PCh. 12 - Prob. 32PCh. 12 - Prob. 33PCh. 12 - Prob. 41PCh. 12 - Prob. 42PCh. 12 - Prob. 44P
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