Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Textbook Question
Chapter 30, Problem 1SQ
List some advantages of solid-state control.
Expert Solution & Answer
To determine
List some of the advantages of solid-state control.
Explanation of Solution
Solid-state control:
Solid-state or state control consists of no moving parts and provides a method to control the machines electrically by using logic elements and accessories.
Advantages of solid-state control:
- The operational speed of the controlling system is faster.
- The solid-state devices are sealed units. Hence, it will not be affected by outside environmental conditions.
- It is not consists of any moving parts. Therefore, there will not be any loss of energy due to friction.
- The lifetime of the solid-state control system is longer.
Conclusion:
Thus, the advantages of solid-state control are listed.
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7. Consider the following feedback system with a proportional controller.
K
G(s)
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G(s) =
10
(s + 2)(s + 10)
You want the system to have a damping ratio of 0.3 for unit step response. What is the
value of K you need to choose to achieve the desired damping ratio? For that value of
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Create the PLC ladder logic diagram
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PBG
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Figure 7-35. Logic gate circuit for Example 7-3.
PLTW
Goodheart-Willcox Publisher
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Chapter 30 Solutions
Electric Motor Control
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