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# lec22 - Slide 5 ME 475 Session 22 Lag Design Galen King...

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Design Example p 1 G (s) s(s 1)(s 2) = + + Slide 1 ME 475 Session 22: Lag Design Galen King Purdue University Specifications: 1) e ss | ramp 10% 2) PM = 45 °

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Open-Loop Bode Plots with K = 20 itude (dB) Open-Loop Bode Diagrams with K = 20 -60 -40 -20 0 20 40 60 80 Slide 2 ME 475 Session 22: Lag Design Galen King Purdue University Frequency (rad/sec) Phase (deg); Magnit -120 -100 -80 10 -3 10 -2 10 -1 10 0 10 1 10 2 -270 -225 -180 -135 -90 -45 0
Design Example Try a Lead design: Slide 3 ME 475 Session 22: Lag Design Galen King Purdue University

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Lag Compensator z c p 1 s/ G (s) 1 s/ + ϖ = + ϖ Slide 4 ME 475 Session 22: Lag Design Galen King Purdue University
Lag Compensator Design Find frequency where PM spec. is met:

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Unformatted text preview: Slide 5 ME 475 Session 22: Lag Design Galen King Purdue University Lag Compensator Design itude (dB) Open-Loop Bode Diagrams with Lag-60-40-20 20 40 60 80 Slide 6 ME 475 Session 22: Lag Design Galen King Purdue University Frequency (rad/sec) Phase (deg); Magnit-120-100-80 10-3 10-2 10-1 10 10 1 10 2-270-225-180-135-90-45 Lag Compensator Design Step Response of Lag Compensated Plant 1 1.2 1.4 Slide 7 ME 475 Session 22: Lag Design Galen King Purdue University Time (sec.) Amplitude 5 10 15 20 25 30 35 40 45 50 0.2 0.4 0.6 0.8...
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lec22 - Slide 5 ME 475 Session 22 Lag Design Galen King...

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