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A sensorless brushless DC motor (sensorless BLDC motor) is quite simply a brushless DC motor without hall effect sensors. Hall effect sensors are sensors which are built into sensored brushless motors which are used to tell the brushless motor controller exactly where the rotor position is. This can be useful for maintaining set speeds and is particularly useful at start up as the rotor position dictates the start up sequence for the motor.
Based on the fact that the motor has no in built sensors then this means that the brushless motor controller has to operate the motor without the use of sensors. One of the ways this can be achieved is through using the back-
With an intelligent controller such as the ZDBL15 brushless ESC closed loop sensorless brushless motor systems can achieve impressive performance both in terms of accurate speed maintenance but also dosing performance in small brushless gear pumps or diaphragm pumps. Key to this is the fact that accurate back-
Of course, a further additional advantage is that sensorless brushless motors and BLDC motor controllers are also lower cost than Sensored Brushless Motors.
If you have any questions in relation to Sensorless Brushless Motors please feel free to CONTACT US to discuss.
ZDBL Series Brushless Motor Drivers and Controllers are compact and lightweight and can be optimised for any BLDC motor. If you need help matching a brushless specification to a DC motor specification then CONTACT US and we will be happy to help.
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