Abstract：This paper presents the research on high accuracy continuous path tracking control problem for robot ma-nipulators.First,it is shown that for a typical SISO variable structure control system,if the phaselag of theunmodeling part is over -π/2,then a boundary layer must be introduced,by using frequency domain analysis.The same analysis approach is extended to the general robot manipulators to determine the upper limit of thefeedback gain of controller,which plays an important role in achieving the high accuracy of the continuouspath tracking control.In the meantime,a simple and practical off-line dynamic parameter estimation approach is given.Finally,the result of continuous path tracking control with high accuracy is demonstratedthrough experiments.
[1] Asada H et. MIT direct-drive arm project. Proc of Robot, 1984 8
[2] Slotine J J E, Coetsee A. Adaptive sliding controller synthesis for nonlinear systems. Int J Contr, 1986s 43, 1631-1651
[3] Borgan W L. Modern control theory. Prentice-Hall, Englewood Cliffs, New Jersey, 1985
[4] Slotine J J E, Li W. Composite adaptive control of,robot manipulators. Automatics, 19891 25(4);509-519
[5] 朱文宏.直接驱动机器人的高精度CP控制.西安交通大学博士论文,1991,2
