"Yoshiki Sugahara,Tadao Takigami,Akihito Kazato,Reiko Koganei,Mitsuji Sampei","Suppression?of?Vertical?Vibration?in?Railway?Vehicles?by?Damping?Force?Control?of?Primary?Suspension?Using?an?LQG?Controller",,"Journal of System Design and Dynamics",,"Vol. 2","No. 1","pp. 251-262",2008,Mar. "Yoshiki Sugahara,Tadao Takigami,Akihito Kazato,Reiko Koganei,Mitsuji Sampei","Improvement of Vertical Ride Comfort of Railway Vehicle by Primary Suspension Damping Force Control","12th Asia-Pacific Vibration Conference","Proceedings of the 12th Asia-Pacific Vibration Conference","The Japan Society of Mechanical Engineers",,,"pp. 1-9",2007,June "Yoshiki Sugahara,Tadao Takigami,Mitsuji Sampei","Suppressing Vertical Vibration in Railway Vehicles through Primary Suspension Damping Force Control",,"Journal of System Design and Dynamics","The Japan Society of Mechanical Engineers","Vol. 1","No. 2","pp. 224-245",2007,Mar. "菅原能生,瀧上唯夫,三平 満司","可変減衰軸ダンパを用いた鉄道車両の上下振動低減",,"日本機械学会論文集(C編)",,"Vol. 72","No. 721","pp. 2770-2778",2006,Sept.