V.S.Sobhan, Polamraju, et al. “Rotor Autocentering and Speed Control of Hybrid Bearingless SRM Using Single-Neuron Adaptive PID Controller”. International Journal of Engineering and Technology, vol. 7, no. 1.8, Feb. 2018, pp. 103-7, https://doi.org/10.14419/ijet.v7i1.8.9982.