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HWS9 - > Problem 1(c > G = tf(1[1 0*tf(1[1 1*tf(1[1 3 > D1...

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>> % Problem 1(c) >> G = tf(1,[1 0])*tf(1,[1 1])*tf(1,[1 3]); >> D1 = 1.4382; T1 = feedback(G*D1,1); >> D2 = tf(6.3*[1 0.7],[1 1.8667]); T2 = feedback(G*D2,1); >> stepinfo(T1) ans = RiseTime: 2.8363 SettlingTime: 9.1882 SettlingMin: 0.9309 SettlingMax: 1.0956 Overshoot: 9.5603 Undershoot: 0 Peak: 1.0956 PeakTime: 6.1215 >> stepinfo(T2) ans = RiseTime: 1.4817 SettlingTime: 6.2578 SettlingMin: 0.9485 SettlingMax: 1.0708 Overshoot: 7.0819 Undershoot: 0 Peak: 1.0708 PeakTime: 3.1087 >> step(T1), hold, step(T2) Current plot held >> legend('Uncompensated','Compensated') % Revised Design >> D3 = tf(28*[1 1],[1 6]); >> T3= feedback(G*D3,1); stepinfo(T) ans = RiseTime: 0.8697 SettlingTime: 4.1612 SettlingMin: 0.9375 SettlingMax: 1.1550 Overshoot: 15.4951 Undershoot: 0 Peak: 1.1550 PeakTime: 2.0134 >> step(T1,'--'), hold, step(T3) Current plot held >> legend('Uncomensated','Compensated') >> 9.1882/4.1612 ans = 2.2081 >>
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>> % Problem 2(c) >> G = tf(1,[1 1])*tf(1,[1 3])*tf(1,[1 5]); >> D1 = 12; T1 = feedback(G*D1,1); >> D2 = tf(13*[1 1],[1 0]); T2 = feedback(G*D2,1); >> stepinfo(T1) ans = RiseTime: 1.1114 SettlingTime: 2.9000 SettlingMin: 0.4021 SettlingMax: 0.4584 Overshoot: 3.1379 Undershoot: 0 Peak: 0.4584 PeakTime: 2.3640 >> stepinfo(T2) ans = RiseTime: 1.5480
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