Design and Implementation of Self-Adaptive PD Controller Based on Fuzzy Logic Algorithm for Omni-Directional Fast Robots in Presence of Model Uncertainties. - A. Sheikhlar; Ahmad Fakharian; Hadi Beik-Mohammadi; Aras Adhami-Mirhosseini (Int. J. Uncertain. Fuzziness Knowl. Based Syst., 2016)