A rolling 6U parallel mechanism

[1]	Stewart D. A platform with six degrees of freedom. In: Proceedings of Institution of Mechanical Engineers, 1965, 180(15): 371–386 CrossRef Google scholar

[2]	Clavel R. DELTA, a fast robot with parallel geometry. Proceedings of the 18th International Symposium on Industrial Robots, Lausanne, Switzerland, 1988, 91–100

[3]	Hirose S, Homma K, Matsuzawa S, Hayakawa S. Parallel link walking vehicle and its basic experiments. The 6th Symposium on Intelligent Mobile Robots. Japan, 1992, 7–8

[4]	Dunlop G R. Foot design for a large walking Delta robot. The 8th International Symposium on Experimental Robotics, 2002, 602– 611

[5]	Sugahara Y, Carbone G, Hashimoto K, Ceccarelli M, Lim H O, Takanishi A. Experimental stiffness measurement of WL-16RII biped walking vehicle during walking operation. Journal of Robotics and Mechatronics, 2007, 19(3): 272–280

[6]	Rhodri H A, Julian F V. Rolling in nature and robotics: A review. Journal of Bionic Engineering, 2006, 3(4): 195–208 CrossRef Google scholar

Acknowledgments

This work was supported by the Program for National Natural Science Foundation of China (Grant No. 50875018), New Century Excellent Talents in University (No. NCET-07-0063), Natural Science Foundation of Beijing (No. 3093025) and Scientific Foundation of Beijing Jiaotong University (No. 2009JBZ001-1).