Question

Q2. Consider the following process transfer function; $G(s) = \frac{5}{1 + 4s}$ a) State which of the following tuning methods can be used to obtain a closed loop response with no overshoot, and to meet a given settling time specification; i) Ziegler-Nichols ii) Cohen-Coon iii) Direct Design Synthesis b) Determine a set of Kp and Ki values for this system under PI control which would yield a settling time of approximately 15s, with no overshoot. c) If a 2 second time delay is added to the process, like below, with the same PI controller parameters, how does the response deteriorate? $G(s) = \frac{5e^{-2s}}{1 + 4s}$ d) Retune the controller to meet the specification in a), when the 2 second delay is present. e) Which parameter, Kp or Ki, required altering the most in order to re-meet the given response specification?

          Q2. Consider the following process transfer function;
$G(s) = \frac{5}{1 + 4s}$
a) State which of the following tuning methods can be used to
obtain a closed loop response with no overshoot, and to meet a
given settling time specification;
i) Ziegler-Nichols ii) Cohen-Coon iii) Direct Design Synthesis
b) Determine a set of Kp and Ki values for this system under PI
control which would yield a settling time of approximately 15s,
with no overshoot.
c) If a 2 second time delay is added to the process, like below, with
the same PI controller parameters, how does the response
deteriorate?
$G(s) = \frac{5e^{-2s}}{1 + 4s}$
d) Retune the controller to meet the specification in a), when
the 2 second delay is present.
e) Which parameter, Kp or Ki, required altering the most in
order to re-meet the given response specification?

Q2. Consider the following process transfer function;
G(s) = (5)/(1 + 4s)
a) State which of the following tuning methods can be used to
obtain a closed loop response with no overshoot, and to meet a
given settling time specification;
i) Ziegler-Nichols ii) Cohen-Coon iii) Direct Design Synthesis
b) Determine a set of Kp and Ki values for this system under PI
control which would yield a settling time of approximately 15s,
with no overshoot.
c) If a 2 second time delay is added to the process, like below, with
the same PI controller parameters, how does the response
deteriorate?
G(s) = (5e^-2s)/(1 + 4s)
d) Retune the controller to meet the specification in a), when
the 2 second delay is present.
e) Which parameter, Kp or Ki, required altering the most in
order to re-meet the given response specification?

Added by Kevin E.

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