[C-3-8] Influence of Shaft Support Stiffness on Driving Performance under Differential Motion of Planetary Gear Train 〇Seiya Hamada1, Kazutoshi Otokodani1, Tomoki Fukuda1, Masao Nakagawa2, Toshiki Hirogaki1, Eiichi Aoyama1 (1.Doshisha University, 2.National Traffic Safety and Environment Laboratory) Keywords:Element、gear、driving performance、support stiffness、planetary gear