Changchun Institute of Optics;
Fine Mechanics and Physics;
Chinese Academy of Sciences;
Changchun 130033;
P.R.China;
University of Chinese Academy of Sciences;
Beijing 100039;
P.R.China;
6-DOF; robot; manipulator; linear; active; disturbance; rejection; controller(LADRC); linear; expansion; state; observer(LESO); trajectory; tracking; control;