[3] Armstrong B,Dupont P,Canudas de Wit C.A survey of models,analysis tools and compensation methods for the control of machines with friction[J].Antomatica,1994,30(7):1083-1138
[7] LIU Jin-kun,ER Lian-jie.Sliding mode controller design for position and speed control of flight simulator servo system with large friction[J].Journal of Systems Engineering and Electronics,2003,14(3):59-62