TY - Front. Mech. Eng. A1 - LIU Hongyi, WANG Fei, WANG Lei T1 - Fuzzy force control of constrained robot manipulators based on impedance model in an unknown environment Y1 - 2007-06-05 JF - Frontiers of Mechanical Engineering JO - Front. Mech. Eng. SP - 168 EP - 174 VL - 2 IS - 2 UR - https://journal.hep.com.cn/fme N1 - 10.1007/s11465-007-0028-4 ER -