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filled12 - ME 475 Handouts - Spring 2011 Check Steady-State...

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ME 475 Handouts - Spring 2011 1 Slide 1 ME 475 Session 12: Root Locus Compensator Design Galen King Purdue University Check Steady-State Error R(s) Y(s) Controller Plant + - E(s) U(s) ) 4 s ( s 4 + 18 s 6 s 30 + + Slide 2 ME 475 Session 12: Root Locus Compensator Design Galen King Purdue University Lag Compensator Note: Thus, β α β + α + = , s s ) s ( G 2 c β α = ) 0 ( G 2 c ) s ( G ) s ( sG lim K where , K 1 e 2 c 0 s v v ss ramp unit = =
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ME 475 Handouts - Spring 2011 2 Slide 3 ME 475 Session 12: Root Locus Compensator Design Galen King Purdue University Lag Compensator The lag compensator must be designed so that it does not alter the locations of the desired roots that were previously placed using the lead. Slide 4 ME 475 Session 12: Root Locus Compensator Design Galen King Purdue University Lag Compensator Design
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ME 475 Handouts - Spring 2011 3 Slide 5 ME 475 Session 12: Root Locus Compensator Design Galen King Purdue University Compensated Root Locus -15 -10 -5 0 5 -25 -20 -15 -10 -5 0 5
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filled12 - ME 475 Handouts - Spring 2011 Check Steady-State...

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