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The input v(t) and output
\omega(t) of a DC motor are related by the differential equation
0.005\frac{d^2\omega}{dt^2} + 0.06\frac{d\omega}{dt} + 0.1064\omega(t)= v(t).A valid state for the system is
\mathbf{x}(t) = \begin{bmatrix} \omega(t)\\\frac{d\omega}{dt}\end{bmatrix}.Which of the following is the state space model corresponding to this choice of state?
A PI controller with transfer function C(s) = 1+1/s is discretised with sampling period
T = 0.1 seconds to obtain a discrete-time controller with transfer function
C_d(z) = \frac{1.1-z^{-1}}{1-z^{-1}}
Which discrete-time approximation approach was used?
A discrete-time system with input u and output
y has transfer function
G(z) = \frac{Y(z)}{U(z)} = \frac{1+z^{-1}}{4-4z^{-1}+z^{-2}}.
Which of the following difference equations represent the time-domain relationship between u and
y for this system?
When using a PID controller, which one of the following statements is true:
Suppose a PI controller is used with an actuator thatsaturates, and no anti-windup method is used. Which of thefollowing statements are true:
A. The overshoot will be smaller than would be the case with no actuator saturation.
B. The settling time will be shorter than would be the case with no actuator saturation.
C. The rise time could be longer than would be the case with no actuator saturation.
Match the values of k_p to the root locus plots of the poles of
G_{PI}(s) as
k_i ranges from
0 to
\infty.
Plot 1:
Plot 2:
Plot 3:
Plot 4:
Plot 5:
Plot 6:
Which of the following plots shows the root locus plot of the poles of G_P(s) as
k_p goes from
0 to
\infty?
Image 1:
Image 2:
Image 3:
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