lecture_27

lecture_27 - Den_r = poly([-1+5j -1-5j]); G_o = tf(Num,...

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ME 421 Mechanical Dynamics and Control Fall 2006, Lecture 27 Today’s topics (Chapter 10) • Recap of feedback control system design; • Concept of model reduction; • Introduction to lead-lag compensator design by using root-locus;
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Design of PID-Type of Feedback Control
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Proportional-derivative (PD) Control
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Proportional-Integral-Derivative (PID) Control
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Concept of Model Reduction
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Model Reduction Method—Transfer function Viewpoint
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%============================== % ME 421 FAll 2006 % Example of PD prefilter-design %============================== Num = 10*poly(-1); Den = poly([-1+5j -1-5j -15]); fig_k = 1;
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Unformatted text preview: Den_r = poly([-1+5j -1-5j]); G_o = tf(Num, Den); K_o = dcgain(G_o); G_r = tf(Num, Den_r); K_r = dcgain(G_r); G_r = tf(K_o/K_r*Num, Den_r); figure(fig_k), step(G_o), hold on, step(G_r); legend(Original Model, Reduced Model); Num = 10*poly([-1 -15+10j -15-10j]); Den = poly([-0.5+5j -0.5-5j -18]); fig_k = 10; Num_r = 10*poly(-1); Den_r = poly([-0.5+5j -0.5-5j]); G_o = tf(Num, Den); K_o = dcgain(G_o); G_r = tf(Num_r, Den_r); K_r = dcgain(G_r); G_r = tf(K_o/K_r*Num_r, Den_r); figure(10), step(G_o), hold on, step(G_r); legend(Original Model, Reduced Model);...
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lecture_27 - Den_r = poly([-1+5j -1-5j]); G_o = tf(Num,...

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