School of Mechanical Engineering Beijing Jiaotong University Beijing 100044 China;
School of Mechanical Engineering Beijing Jiaotong University Beijing 100044 China;
School of Mechanical Engineering Beijing Jiaotong University Beijing 100044 China;
School of Mechanical Engineering Southwest Jiaotong University Chengdu 610031 China;
5-DOF hybrid manipulator; reconfigurable base; large workspace; dimensional synthesis; optimal design;