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This paper describes a signal-based speed estimation of 3-Phase Brushless Direct Current (BLDC) motor using the relationship between commutation signal and Back Electromotive Force (Back-EMF). Both signals can directly be measured from each phase of motor's terminal. The relationship function between both signals is approximated and filtered to find Haft of phase voltage-Crossing Point and using Artificial...
Nowadays, DC motor drives are widely used in industry for drive systems such as conveyors and hydraulic servo motors. The performances of DC motor control systems are reduced by the effect of DC motor variable torque. The control system of a DC motor will increase the electric current in a DC motor to maintain a desirable speed when the DC motor receives the variable torque or disturbance torque....
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