lec14 - Summary of Root Locus Design Uses time domain...

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Summary of Root Locus Design Uses time domain specifications (e.g., settling time, % OS, etc.) to specify desired root locations of closed-loop characteristic equation. Slide 1 ME 475 Session 14: Frequency Domain Design Galen King Purdue University Achieving desired time-domain performance depends on validity of the 2 nd -order dominance assumption and absence of “slow” zeros. Only closed-loop poles can be placed; closed-loop zeros cannot be directly manipulated. Frequency-dependent effects hard to incorporate.
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Frequency Domain Design Represent the system in terms of frequency response: U(s) Y(s) G(s) Slide 2 ME 475 Session 14: Frequency Domain Design Galen King Purdue University System transfer function G(s) can be mapped out via and . )) j ( G t sin( A ) j ( G ) t ( y , t sin A ) t ( u When ss ϖ + ϖ ϖ = ϖ = ) j ( G ϖ ) j ( G ϖ
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Frequency Domain Design Why use frequency domain design? System model may have been experimentally
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This document was uploaded on 03/31/2011.

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lec14 - Summary of Root Locus Design Uses time domain...

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