1. New Energy and Industrial Technology Development Organization, “2014 White Paper on Robotization of Industry, Business and Our Life,” 2014.
2. S. Kitagawa, M. Kato, M. Okugawa, and Y. Kobayashi, “Attitude Angle Estimation and Vibration Control of Mobile Robot with Self-Righting Mechanism,” Proc. of the 11th Motion and Vibration Conference, Paper No.8728, 2012.
3. M. Okugawa, Y. Kato, M. Kato, and T. Ohmichi, “Showpiece Identification and Utterance Function of Tour Guide Robot,” Trans. of the 12th SICE System Integration Division Annual Conf. (SI2011), pp. 2164-2167, 2011.
4. P. A. Ioannou and K. S. Tsakalis, “A Robust Direct Adaptive Controller,” IEEE Trans. Automatic Control, AC-31-11, pp. 1033-1043, 1986.
5. H. Kaufman, I. Bar-kana, and K. Sobel, “Direct Adaptive Control Algorithms,” Springer, 1997.