1. Graduate student, Course of Mechanical Engineering, Tokai University, Hiratsuka-shi, Kanagawa, Japan
2. Department of Electrical and Electronic Engineering, Tokyo University of Science, Chino-shi, Nagano, Japan
3. Department of Prime Mover Engineering, Tokai University, Hiratsuka-shi, Kanagawa, Japan
4. Department of Precision Engineering, Tokai University, Hiratsuka-shi, Kanagawa, Japan