blob: fc06620a1f8c2cc7aa6232e28a6849e0933cc459 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
s=%s
F=s^6+2*s^5+8*s^4+12*s^3+20*s^2+16*s+16
disp(routh_t(F))
r=coeff(F)
routh=routh_t(F)
n=length(r)
c=0;
for i=1:n
if (routh(i,1)<0)
c=c+1;
end
end
if(c>=1)
printf("system is unstable")
else printf("there are no roots on RHS")
end
R=sqrt(roots(routh(3,:)))
disp(R)
disp("non repeated roots on imaginary axis. hence system is marginally stable")
|
