Suppression of rotor vibrations of an electric machine at the critical speed by optimal state feedback controller. - Juha Orivuori; Antti Laiho; Anssi Sinervo; Kai Zenger; Antero Arkkio (ECC, 2009)

Active control of a frequency varying tonal disturbance by a nonlinear optimal controller with frequency tracking. - Juha Orivuori; Ilias Zazas; Steve Daley (PSYCO, 2010)