1. (1) H. Nakamura, K. Ohishi, Y. Yokokura, N. Kamiya, T. Miyazaki, and A. Tsukamoto: “Force Sensorless Fine Force Control Based on Notch-Type Friction-Free Disturbance Observers”, in IEEJ Journal of Industry Applications, Vol. 7, No. 2, pp. 117-126 (2018)
2. (2) L. Freidovich, A. Robertsson, A. Shiriaev, and R. Johansson: “LuGre-Model-Based Friction Compensation”, in IEEE Transactions on Control Systems Technology, Vol. 18, No. 21, pp. 194-200 (2010)
3. (3) C. Canudas de Wit, H. Olsson, K. J. Astrom, and P. Lischinsky: “A New Model for Control of Systems with Friction”, in IEEE Transactions on Automatic Control, Vol. 40, No. 3, pp. 419-425 (1995)
4. (4) D. H. Lee and J. W. Ahn: “Dual speed control scheme of servo drive system for a nonlinear friction compensation”, in IEEE Transactions on Power Electronics, Vol. 23, No. 2, pp. 959-965 (2008)
5. (5) K. A. J. Verbert, R. Tóth, and R. Babuška: “Adaptive Friction Compensation: A Globally Stable Approach”, inIEEE/ASME Transactions on Mechatronics, Vol. 21, No. 1, pp. 351-363 (2016)