2009 10th European Control Conference, ECC 2009, Budapest, Hungary, 23 - 26 August 2009, pp.561-566, (Full Text)
© 2009 EUCA.In this paper, two methods for calculating all robustly stabilizing PI controllers for continuous time single-input single-output linear time invariant systems with multiplicative uncertainties are given. The first method which is based on parameter space approach is a geometric oriented method. The second method utilizes a generalization of Nyquist stability criterion.