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The control of brushless dc motors (BLDCMs) is similar to dc motors during the noncommutation interval. However, three phases are involved in electromechanical energy conversion during the commutation interval, making the control of the BLDCM similar to a three-phase ac motor during the commutation interval. A novel commutation analysis method for BLDCMs is proposed based on the coordinate transformation...
In this paper, to detect and manage Unmanned Aerial Vehicles (UAVs), a passive radar array system is discussed to receive and process the Orthogonal Frequency Division Multiplexing (OFDM) echoes of UAV, which are originally transmitted by the nearby base stations. A uniform circular array is employed to receive the echoes whose model is introduced. To handle the echoes, a signal processing subsystem...
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