A#22 - “PI controller” “plant” X s s K K I P 1 25 s...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Assignment #22 – p.1 ECSE-2410 Signals & Systems - Spring 2009 Due Tue 04/21/09 1(20). Find the closed loop system transfer function, ) ( ) ( s X s Y , expressed in terms of transfer functions . ) ( ), ( ), ( ), ( s D s C s B s A 2(45). In each case, sketch the root locus plots ( K > 0 ) for the following open loop transfer functions for unity feedback systems. Find the following, if they exist. Breakaway points and points of re-entry. Direction of travel of the roots as K varies from 0 to infinity. All asymptotes, asymptote angles and asymptote locations (centroids). Any j ω -axis crossings. (a) 2 1 ) ( s s s G + = (b) ) 1 ( 1 ) ( 2 + + = s s s s G (c) 3 2 ) 1 ( ) ( s s s G + = 3(15). The proportional-plus-integtral (PI) controller shown is used to improve the steady-state error
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon