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.
(See the next slide.)
For the 2nd-order transfer function, analytic
2ndexpressions of delay & rise time are hard to
obtain (and not covered in this course).
Time constant is 1/(ζωn), indicating
For ζ>1, we cannot define peak time, peak
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 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.
- Winter '09