Affiliation: | 1. The University of Electro-Communications, Department of Mechanical and Control Engineering , Chofu-shi, 182-8585, Tokyo, Japan;2. Kanto Gakuin University, Department of Mechanical Engineering , 236-8501, Yokohama-shi, Japan;3. The University of Electro-Communications , Chofu-shi, 182-8585, Tokyo, Japan |