# HW_11 - ECE 313(Spring 2009 Homework#11(Due Monday in class...

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1 ECE 313 (Spring 2009) Homework #11 (Due: April 27, 2009, Monday, in class) Reading Assignment Reminder: Sections 10.6-10.7, 10.10, 10.12, 11.1-11.2, 11.4 Recommended optional reading: Sections 10.11, 10.13 Problems: 1) (10 pts) Consider the unity feedback system shown in the figure: For each of the following transfer function ) ( s G , plot its Bode plots using Matlab command “bode”, and then work on the plots to find out the crossover frequency c ω , the phase margin pm φ , the phase crossover frequency pc , and the gain margin GM : (a) 4 () ( 1)( 2)( 10) s Gs ss s s + = ++ + (b) 100 ( 2)( 3) s = + 2) (10 pts) Consider the unity feedback system shown in the figure, where (1 ) (2 ) K s = . Plot the Bode plots for with Matlab for the case

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HW_11 - ECE 313(Spring 2009 Homework#11(Due Monday in class...

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