Guo, X., Liao, X., Wang, Q., Wen, Y. and Wu, T. 2022. Designing Active Disturbance Rejection Control of Permanent Magnetic Spherical Actuator Based on Nonlinear Extended State Observer. Elektronika ir Elektrotechnika. 28, 1 (Feb. 2022), 23-31. DOI:https://doi.org/10.5755/j02.eie.30102.