Hi

I am researching about factorization method in Fault detection, and I have a question about it

as we know for perfect decoupling in factorization (as mentioned in the file which is attached to this post) we have:

R(s).Mu(s).Gd(s)=0

R(s).Mu(s). Gf(s) is not 0

for having them we should have this condition

rank [Gd(s)]