Haichao Feng, Jikai Si, Zhiping Cheng, Caixia Gao, and Wenping Cao. “Rotary Coupling Magnetic Field Characteristics of a Two-Degree-of-Freedom Direct Drive Induction Motor”. Applied Computational Electromagnetics Society Journal (ACES) 34, no. 11 (November 1, 2019): 1777–1787. Accessed July 30, 2024. https://journals.riverpublishers.com/index.php/ACES/article/view/8135.