The driver mostly has following three functions

1). Location loop, monitor the position of rotor constantly, and feedback to driver to make compensation for the equal processing feedback;

2). Speed loop, play a role of accelerating and slowing down speed smoothly and delicately;

3). Torque loop, feedback driver to control current in the light of outer load, in order to control the heating of the motor greatly to reduce energy consumption, the key also has the overload capacity.

It becomes closed loop servo system after assembled encoder, but not every user need above three loops all, using three loops is the most complicated situation. The speed loop applies for most simple cases, to play role of adjusting smoothly.

Yes, we could use Bonded magnetic steel for rotor, but the power will be lower than regular motor, and the efficiency is only around 63%. The regular brushless dc motor use Sintered magnetic steel for rotor, the efficiency could be around 73%.

For example, NEMA 23 brushless dc motor with length 75mm body. The output power is 90W with bonded magnetic steel. The output power could be 170W with Sintered magnetic steel, which price is increased 20%

One word, brushless dc motor’s price is decided by Power and torque, not motor length.

Our Brushless DC Motor could be used in AGV.

I would like to know the technical specifications, characteristic specifications (torque, power, speed), so that we could customize the suitable motor for your application.