As the counterpart mechanism of serial robot, parallel robot has merits such as high mechanical stiffness, high precision and no accumulation of position errors etc, and has become a hot research topic in domain of robot. At present, parallel robot has found its wide and important applications in such areas as aviation, astronautics, submarine engineering, manufacturing, computer aided medical equipment and mirco eletro-mechanical system(MEMS) etc.
Nevertheless, there still exist some challenging ...