“…Moreover, a class of fuzzy/neural network controls and their combination with adaptive approaches (Ćirović Contents Mirzaei et al, 2005;Sharkawy, 2010) have been used for adaptive prediction of wheel slip. In addition, feedback control (Mirzaeinejad & Mirzaei, 2010;Tanelli et al, 2008), iterative learning control (Mi, Lin, & Zhang, 2005) and extremum seeking control (Dincmen & Güvenc, 2012;Dincmen et al, 2014;Zhang & Ordóñez, 2007) are applied in this field. Many research efforts have been devoted to adjusting the setting of slip ratio and regulating the reference slip ratio or optimal slip ratio to achieve good tracking.…”