*Yasuo Sakurai¹, Takahisa Nagasawa² (1. Ashikaga Institute of Technology, 2. KOYO Seiki Co., LTD.)

*Hitomi Okabe¹, Yukiko Tanaka¹, Futoshi Yoshida², Shouichiro Iio¹ (1. Shinshu university faculty of engineering, 2. KYB corporation)

*Kenji Suzuki¹, Yohichi Nakao¹, Tsutomu Iguchi², Futoshi Yoshida³ (1. Kanagawa University, 2. Hirose Valve Industry Co., Ltd., 3. KYB Corporation)

*Hideki Yanada¹, Yuhi Ito¹, Yutaka Fujimoto¹ (1. Toyohashi University of Technology)

*Yuhi YOSHIDA¹, Tatsuya UCHIDA¹, Kazushi SANADA² (1. Department of Systems Integration, Graduate School of Engineering Yokohama National University, 2. Faculty of Engineering, Yokohama National University)

*Tatsuya UCHIDA¹, Yuhi YOSHIDA¹, Kazushi SANADA² (1. Department of Systems Integration, Graduate School of Engineering, Yokohama National University, 2. Faculty of Engineering, Yokohama National University)