Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Textbook Question
Chapter 14, Problem 1RQ
When using a rod type float switch, how is the amount float movement required to open or close the contacts adjusted?
Expert Solution & Answer
To determine
The method of adjusting the amount of float movement that requires to open or close the contacts.
Explanation of Solution
Float switches are the switches that control the operation of a pump with respect to the level of liquid present in the storage tank or sump. In rod type float switches, a float is connected to a rod that moves up or down according to the level of liquid present in a tank or sump, thereby opening or closing the contacts of a float switch.
Before employing a float switch, the amount of movement of float that is required to open or close the contacts of a float switch should be defined and configured. The configuration of float movement is achieved by adjusting the stops provided on the rod.
Thus, the amount of float movement that is required to open or close the contacts is equal to the distance between the stops of a float rod. By adjusting the stops of a float rod, one can vary the amount of float movement.
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Find the solution of the following Differential Equations
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1) 4y+2y=0.
y(0)=2.
y'(0)=0.
2) y+w²y=0,
(0)=A,
y'(0)=B.
3) +2y-8y 0.
y(0)=1.
y'(0)-8.
4)-2-3y=0,
y(0)=1.
y'(0)=7.
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y(0)=2,
y'(0)=k.
6) y+ky'-2k²y=0,
y(0)=2,
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y(0)=-1.
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y(0)=2.1.
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y'(0)=-3.
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y'(0)=-0.5
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y(0)=2.
y'(0) = 0.
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y(0)=3,
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29)…
Auto Controls
A union feedback control system has the following open loop transfer function
where k>0 is a variable proportional gain
i. for K = 1 , derive the exact magnitude and phase expressions of G(jw).
ii) for K = 1 , identify the gaincross-over frequency (Wgc) [where IG(jo))| 1] and phase cross-overfrequency [where <G(jw) = - 180]. You can use MATLAB command "margin" to obtain there quantities.
iii) Calculate gain margin (in dB) and phase margin (in degrees) ·State whether the closed-loop is stable for K = 1 and briefly justify your answer based on the margin . (Gain marginPhase margin)
iv. what happens to the gain margin and Phase margin when you increase the value of K?you
You can use for loop in MATLAB to check that.Helpful matlab commands : if, bode, margin, rlocus
NO COPIED SOLUTIONS
Chapter 14 Solutions
Understanding Motor Controls
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- Auto Controls A union feedback control system has the following open loop transfer function where k>0 is a variable proportional gain i. for K = 1 , derive the exact magnitude and phase expressions of G(jw). ii) for K = 1 , identify the gaincross-over frequency (Wgc) [where IG(jo))| 1] and phase cross-overfrequency [where <G(jw) = - 180]. You can use MATLAB command "margin" to obtain there quantities. iii) Calculate gain margin (in dB) and phase margin (in degrees) ·State whether the closed-loop is stable for K = 1 and briefly justify your answer based on the margin . (Gain marginPhase margin) iv. what happens to the gain margin and Phase margin when you increase the value of K?you You can use for loop in MATLAB to check that.Helpful matlab commands : if, bode, margin, rlocus NO COPIED SOLUTIONSarrow_forwardAuto Controls Hand sketch the root Focus of the following transfer function How many asymptotes are there ?what are the angles of the asymptotes?Does the system remain stable for all values of K NO COPIED SOLUTIONSarrow_forward-400" 150" in Datum 80" 90" -280"arrow_forward
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