1. National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8565, Japan
2. National Research Council of Canada, Ottawa K1A 0R6, Canada
3. Graduate School of Engineering Science, Osaka University, Osaka 560-8531, Japan
4. Toyota Central R&D Labs., Inc., Nagakute 480-1192, Japan
5. Department of Mechanical Engineering, Keio University, Yokohama 223-8522, Japan
6. Department of Mechanical Systems Engineering, University of the Ryukyus, Nishihara 903-0213, Japan