1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Determine the range of K that keeps the system stable

  1. Dec 31, 2012 #1
    1. The problem statement, all variables and given/known data

    i meet problem below in control system :

    G(s)= K(s+4)/s(s+1)(s+2) its a unity feedback system.

    1. determine the range of K that keeps the system stable.
    2. determine the range of K that makes the system oscillate
    3. calculate the frequency of oscillation when the system oscillate

    2. Relevant equations

    characteristic equation for stability Routh Hurwitz Creation


    3. The attempt at a solution

    i have solved the first by determine the range of K by using Routh Hurwitz Table. But, i m very confused when it comes to find the range of K that makes system oscillate. even, i dont understand the term for oscillate. conclusion number 2 and 3 is very confusing.
     
  2. jcsd
  3. Dec 31, 2012 #2

    rude man

    User Avatar
    Homework Helper
    Gold Member

    Is G(s) the forward gain with unity feedback? Good idea is to draw us a block diagram.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Determine the range of K that keeps the system stable
Loading...