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Drones, Volume 7, Issue 10
October 2023 - 50 articles
Cover Story: Electrification needs and reliability constraints drive the design of long-endurance UAV propulsion systems toward the use of dual-redundant motors. Due to imperfections or degradations, torque splits can deviate from nominal splits, causing force-fighting and reduced efficiency. The proposed technique, applicable for both signal-based and model-based monitoring schemes, allows us to evaluate the torque in a dual-stator system by only elaborating speed and direct/quadrature currents during motor acceleration, through the estimation of demagnetization and electrical angle misalignment. The monitoring is firstly designed by means of a system model, experimentally validated using a motor prototype with degradations, and then verified simulating the system dynamics during UAV flight manoeuvres. View this paper
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Drones - ISSN 2504-446X