Low voltage DC brushless servo motor controller

Low voltage DC brushless servo motor controllerController introduction: Input voltage 0-48V; Motor power: 0-25W; Speed regulation mode: potentiometer control or PWM pulse width contr

  • Model: Low voltage DC brushless servo motor controller

Low voltage DC brushless servo motor controller

Controller introduction:

       Input voltage 0-48V;


       Motor power: 0-25W;


       Speed regulation mode: potentiometer control or PWM pulse width control;


       Function: can adjust the speed and switch the motor forward and reverse;


 


Introduction to Low Voltage Brushless Permanent Magnet Brushless DC Motor (BLDC) Motor

Permanent magnet AC motors, permanent magnet synchronous motors, etc. have created confusion because brushless DC motors do not directly operate a DC voltage source. However, the basic operating principle is similar to that of a DC motor.


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Brushless DC motors include:

Stator with permanent magnets and rotor winding


Basically a BLDC motor, DC motor facing out


Brushes and commutators have been eliminated, windings are connected to electronic control


The electronic control system replaces the function of the commutator and excites the correct winding


Winding is energized and rotates around the stator


The stator winding is energized causing the rotor magnet, switch and rotor to align with the stator


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The main features of BLDC motors:

Is there any spark


Easy to clean, faster, more effective, less noise, and more reliable


Heat generated by the stator: easy to disassemble and maintain


The rotor has permanent magnets and coils, so the inertia is small and it is easier to start/stop


Smooth acceleration or constant torque with linear torque/current relationship


Higher torque ripple due to lack of information between sectors


Low cost manufacturing


Simple, low-cost design, fixed speed application


Clean, fast and efficient


Speed up the appropriate power frequency (50 or 60 Hz)


Complex control of speed and torque


Need electronic control


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BLDC motor control

enter:

Typical torque, speed, position and/or direction

Input can be analog voltage, potentiometer, switch or digital communication

BLDC motor control: 6-step #3-phase PWM of basic I/O

Comparison of speed sensing sensor control, overcurrent detection

Capture/compare/PWM or input capture speed sensing

Feedback:

Hall effect sensor, photoelectric encoder or back electromotive force voltage


BLDC motor design flow chart


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