MECH 466 - Lecture9-TimeResponse-2009W

6 1 4 1 2 1 0 8 0 6 0 4 0 2 0 0 5 10 15 damped natural

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Unformatted text preview: Automatic Control 17 2008/09 Properties of 2nd-order system MECH466 : Automatic Control 18 Some remarks Percent overshoot depends on ζ, but NOT ωn. Percent (See the next slide.) For the 2nd-order transfer function, analytic For 2ndexpressions of delay & rise time are hard to obtain (and not covered in this course). Time constant is 1/(ζωn), indicating Time convergence speed. For ζ>1, we cannot define peak time, peak For value, percent overshoot. (5%) 2008/09 MECH466 : Automatic Control (2%) 19 2008/09 MECH466 : Automatic Control 20 5 P.O. vs. damping ratio Pole locations of G Poles (0<ζ<1) Poles Damping ratio Damping Next, we clarify the influence of pole locations on the step response. 2008/09 MECH466 : Automatic Control 21 Influence of real part of poles 2008/09 MECH46...
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This document was uploaded on 03/05/2014 for the course MECH 466 at UBC.

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