Dear all,
is it possible to determine the poles of the combination of two transfer functions in a feedback loop when you know the poles and zeroes of the two individual transfer functions?
I've two small SISO transfer functions G1 and G2, from which the poles and zeroes are known. Know I connected them in a (positive) feedback loop and the new transfer functions is G1/(1-G1*G2). Is it possible to determine the poles of this new transfer function directly from the poles and zeroes from G1 and G2, without having to calculate the new transfer function?
Thanks in advance.
Johan Morren Delft University of Technology The Netherlands