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A speed and high resolution position identification algorithm, suitable for brushless drives, is presented in this paper. The algorithm, which is developed basing upon the Popov's Hyperstability Theory, guarantees the convergence of the estimated signals to their corresponding actual values by means of the measured currents. The algorithm is proposed for brushless DC (BLDC) motors which are characterized...
The paper deals with isotropic PM-brushless drives in configuration “single-inverter, dual-motor” operating with unbalanced load-torques. After a short review of some control techniques based on the classical control methodologies of single-motor PM drives, an innovative control algorithm is presented. It is suitable to minimize the resultant armature current needed to obtain an assigned resultant...
For a three-phase DC-brushless drives, the paper presents a control technique able to maintain practically constant the motor torque in steady-state operations. This optimized feature can be obtained whatever is the waveform of the air-gap flux density distribution generated by rotor magnets. Isotropic machine are considered with respect to the air-gap armature field (surface mounted magnets). On...
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