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An engineering laboratory has presented a plan to operate an Earth-orbiting satellite that is to be controlled from a ground station. A block diagram of the proposed system is shown in Figure CP9.7. It takes T seconds for a signal to reach the spacecraft from the ground station and the identical delay for a return signal. The proposed ground-based controller is a proportional-derivative (PD) controller, where
(a) Assume no transmission time delay (i.e., T = 0), and design the controller to the following specifications: (1) percent overshoot less than 20% to a unit step input and (2) time to peak less than 30 seconds.
(b) Compute the phase margin with the controller in the loop but assuming a zero transmission time delay. Estimate the amount of allowable time delay for a stable system from the phase margin calculation.
(c) Using a second-order Pade approximation to the time delay, determine the maximum allowable delay Tmax for system stability by developing a m-file script that employs the pade function and computes the closed-loop system poles as a function of the time delay T. Compare your answer with the one obtained in part (b).
How do they relate to strategic human resource management? Be sure to explain this relationship in terms of the resource-based view of the firm and sustainable competitive advantage.
a) What is the process standard deviation? What is b) If, what are the control limits for the mean chart c) What are the control limits for the range chart?
The mean math score for fifth grade students at Smart Elementary is 90 with a standard deviation of 8. The fifth grade students are tested each year to determine if the mean score remains the same.
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Unfortunately, the random variable in question is exponentially distributed; the sample size of 10 is considerably smaller than is required for a normal approximation to be valid for the sampling distribution of the sample mean; and therefore no ..
The important thing is having a reason for picking the model that you decide on. You should choose a model for overall characteristics like a high R^2 value. Y
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