Apparatus and method for controlling brushless electric motors and position encoders and indicating position thereof
作者： Uwe Muller , Johann von der Heide , Micheal Hermann
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摘要: A brushless direct current motor is energized by a power stage. Switches of the stage are selectively switched an electronic control device. In order to determine correct commutation pattern, without using rotor position indicators such as Hall effect devices, device arranged sample fed motor. The samples, each responsive test signal or normal energization pulses received motor, in ordered sequence define analogue function whose parameters can be determined mathematical analysis. analysis applied samples derives necessary information and signals rapid manner employing vector complex number addition based on functions dependent variable inductance operation
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