PI control. disturbance observer. AC speed servo drive. performance. robustness. noise attenuationVonkomer, Jakub, 1986- Disturbance observer control for AC speed servo with improved noise attenuation / aut. Jakub Vonkomer, Igor Bélai, Mikuláš Huba. -- 2-s2.0-85031779480. -- 000423964800212. Bélai, Igor, 1964-. Huba, Mikuláš, 1951- In: IFAC-PapersOnLine. -- ISSN 2405-8963 World congress on the international federation of automatic control. -- Vol. 50, 20th World congress on the International Federation of Automatic Control. Toulouse, France. July 9-14, 2017 (2017), s. 4384-4389.