A real-time observer for UAV's brushless motors

Abstract : Vector control has been widely used in control of permanent magnet synchronous motors (PMSM). This technique requires an accurate knowledge of the rotor position. In many applications, such as mini-UAV, it is not possible to install any mechanical sensor. Therefore, a sensorless technique using position observer has to be implemented in order to estimate the rotor position. In this paper, we propose a new observer for PMSM sensorless control: the position estimate is generated upon electromagnetic relations (dynamics of magnetic flux in the motor) in the two-phase stationary reference frame. The implementation of the proposed observer is not a real burden; its validity is experimentally tested and satisfactory results are obtained regarding real position (and speed set-point) tracking in different operating situations.
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Contributor : Mohamad Koteich <>
Submitted on : Wednesday, November 6, 2013 - 3:07:53 PM
Last modification on : Monday, February 10, 2020 - 10:40:05 AM
Long-term archiving on: Friday, February 7, 2014 - 9:35:08 AM




Mohamad Koteich, Thierry Lemoing, Alexandre Janot, François Defaÿ. A real-time observer for UAV's brushless motors. ECMSM 2013, Jun 2013, Toulouse, France. pp.1-5, ⟨10.1109/ECMSM.2013.6648964⟩. ⟨hal-00880592⟩



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