The sensorless control strategy of UAV rotor motor in full speed range

• Published in: E3S Web of Conferences Vol. 261; p. 1010
• Main Authors: Ma, Siyuan, Yu, Xiang, Guo, Yunjun, Ran, Rong
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Les Ulis EDP Sciences 01-01-2021
• Subjects: Algorithms; Dynamic response; Hybrid control; Low speed; Motor task performance; Permanent magnets; Position sensing; Rotors; Sliding mode control; Surface stability; Switching theory; Synchronous motors; Unmanned aerial vehicles
• ISSN: 2267-1242; 2555-0403; 2267-1242
• DOI: 10.1051/e3sconf/202126101010

UAV (Unmanned Aerial Vehicle) has broad application prospects in various fields. In order to meet the needs of stability and efficiency during flight, a surface-mounted permanent magnet synchronous motor is used as its rotor motor, and a position sensorless control technology is used to control the rotor motor with high efficiency and high dynamic response. This paper proposes a position sensorless control strategy in the full speed range for the actual application requirements of UAV. In low speed ange, I/F control strategy with speed-open-loop and current-closed-loop is. In medium and high speed range, a sliding mode observer is adopted to provide estimated rotor position and speed. To achieve smooth switching from I/F control stage to speed closed-loop stage, a switching algorithm is proposed. The feasibility of the proposed hybrid control strategy is verified by simulation results.