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Question 2 ( MATLAB etc ) : ( Cohen - Coon ) a ) The step response of a open loop system depicted in Figure
Question MATLAB etc: CohenCoon
a The step response of a open loop system depicted in Figure is given in Figure Design P PI and PD controllers for
system given in Figure Illustrate the closedloop system behaviour for each designed controller using matlab.
Fig. Closedloop control system
Fig. Step response of controller
bPlot the response of the closedloop system, control signal etc via Matlab, and comment on results. Explain the reason of
more overshoot. Plot control signal. Show all result via matlab.
cDisturbance Rejection: Apply a step type input disturbance and illustrate whether the designed controller rejects the
disturbance for PD designed in previous step. Find the disturbance rejection time. Depict the control signal.
Measurement noise: Add a measurement noise with or rand value. Illustrate the system output, control
signal etc.
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