1. Department of Mechanical Engineering, Aichi Institute of Technology, 1247 Yachigusa, Yakusa-cho, Toyota 470-0392, Japan
2. DiAPLEX Co. Ltd, Ebisu-minami 1-5-2, Shibuya-ku, Tokyo 150-0022, Japan
3. Churyo Engineering Co, Ltd, 60-1 Kutanjo, Iwatsuka-cho, Nakamura-ku, Nagoya 453-0862, Japan