Excercise 2: Ideal PID controllers. Consider the systems represented by the block diagrams below r ki/s ki/s Σ у P(s) kp Σ Σ) P(s) kp Σ kas kas Controller -1 -1 Controller Assume that the plant has the transfer function P(s) = b/(s + a) (a) Show that the transfer functions from r to y are bk4s2 bkpsbki (1bkd)s2(a + bkp)s + bki Gyr(s) bki Gyr(s) (1 bkd)s2(a +bkp)s+ bki (b) Pick the parameters: b = 1, a 5, kd = 2, ki = 4, and kp = 3, and compare the step responses of the systems. What are the main differences between the two PID controllers?

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Excercise 2: Ideal PID controllers. Consider the systems represented by the block diagrams below
r
ki/s
ki/s
Σ
у
P(s)
kp
Σ
Σ)
P(s)
kp
Σ
kas
kas
Controller
-1
-1
Controller
Assume that the plant has the transfer function P(s) = b/(s + a)
(a) Show that the transfer functions from r to y are
bk4s2 bkpsbki
(1bkd)s2(a + bkp)s + bki
Gyr(s)
bki
Gyr(s)
(1 bkd)s2(a +bkp)s+ bki
(b) Pick the parameters: b = 1, a 5, kd = 2, ki = 4, and kp = 3, and compare the step responses of
the systems. What are the main differences between the two PID controllers?
Transcribed Image Text:Excercise 2: Ideal PID controllers. Consider the systems represented by the block diagrams below r ki/s ki/s Σ у P(s) kp Σ Σ) P(s) kp Σ kas kas Controller -1 -1 Controller Assume that the plant has the transfer function P(s) = b/(s + a) (a) Show that the transfer functions from r to y are bk4s2 bkpsbki (1bkd)s2(a + bkp)s + bki Gyr(s) bki Gyr(s) (1 bkd)s2(a +bkp)s+ bki (b) Pick the parameters: b = 1, a 5, kd = 2, ki = 4, and kp = 3, and compare the step responses of the systems. What are the main differences between the two PID controllers?
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