Control Systems Stability (Routh-Hurwitz Criterion) +- HP Forums (http://www.hpmuseum.org/forum) +-- Forum: HP Software Libraries (/forum-10.html) +--- Forum: HP Prime Software Library (/forum-15.html) +--- Thread: Control Systems Stability (Routh-Hurwitz Criterion) (/thread-5759.html)

Control Systems Stability (Routh-Hurwitz Criterion) - toshk - 02-24-2016 11:10 AM CAS code: first time: compile before use eg1. how([1,4,3,2,1,4,4])--> x^6+4*x^5+3*x^4+2*x^3+x^2+4*x+4 is stored in nx after running eg1. eg2. how([1,4,k,2,1,4,4])--> x^6+k*x^4+4*x^5+2*x^3+x^2+4*x+4 The characteristic equation s^4 + 2s^3 + 3s^2 + 4s + K+2 enter as how([1,2,3,4,k+2]). This code will give you the Routh-Hurwitz Matrix = M25; This code will not tell you how many pole(s) lies in the left/right planes: To find how many Sign changes just use the Hp Prime standard function; sturmab(nx,x,-20,0) as in eg1. but not in eg2.(because of the variable k)