1. [1] S. Aoshima et al. A miniature mobile robot using piezo vibration for mobility in a thin tube. ASME J. Dynam. Syst., Meas., Contr.1993 (115), 270–278.10.1115/1.2899031
2. [2] T. Idogaki et al., Characteristics of piezoelectric locomotive mechanism for an in-pipe micro inspection machine. In Proc. IEEE 6th Int. Symp. Micro Machine and Human Sciences1995, 193 – 198.
3. [3] Linzhi Sun Ping Sun Xinjie Qin Cunmin Wang. Micro Robot in Small Pipe with Electromagnetic Actuator. Proceedings of the 1998 International Symposium on Micromechatronics and Human Science1998, 243 – 248.
4. [4] T. Matsumoto et al. A prototype model of micro mobile machine with piezoelectric driving force actuator. In Proc. IEEE 5th Int. Symp. Micro Machine and Human Sciences1994, 47 – 54.
5. [5] T. Fukuda, H. Hosokai, M. Uemura. Rubber gas actuator driven by hydrogen storage alloy for in-pipe inspection mobile robot with flexible structure. In Proc. IEEE Int. Conf. Robotics, Automation1989 (3), 1847 – 1852.