ECE :: Automatic Control Systems
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A lag compensator is essentially a
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Stepper motors find applications in
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For type 2 system, the magnitude and phase angle of the term (jω)2 in the denominator, at ω = 0, are respectively
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In an integral controller
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In Bode diagram (log magnitude plot) the factor
in the transfer function gives a line having slope -
In the given figure the input is x(t) = A sin ωt. The steady state output y(t) =
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In the given figure x6 =
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A negative feedback system has
. The closed loop system is stable for -
For the control system in the given figure, the value of K for critical damping is
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, β > 1 
has a magnitude of infinity and phase angle -180°.
term the slope is -20 dB/decade or -6 dB/octave because - 20 log 2 = -6 dB.
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since ζ = 1, ωn = 3.5 Hence 2 + 2k = 3.52 = 12.25 or K = 5.125 .