Brushless dc motor learning, & other; No commutator machine & throughout; Or & otherNo commutator machine & throughout; , is a new type of dc motor, but with no commutator, has the advantages of simple structure, easy fabrication, don't need regular maintenance etc, and is a kind of widely used in automation equipment industry, medical, textile, and other fields; on the working principle of the brushless dc motor using square wave control type, by hall sensor to replace carbon brush and commutator rotor in ndfeb permanent magnet materials; The technical specifications of the products performance beyond the traditional dc motor,
brushless dc motor with high efficiency, high torque, high characteristics of high precision; Also has a small volume, light weight, can be made into various shape, volume compared with traditional dc motor, or have better performance compared with ac frequency control of motor speed; In the medical industry has replaced the transmission of a dc motor; red hall normally take 5-12 v dc. Recommend 5 v. Inside the hall signal transmission motor magnets relative to the position of the coil, according to the three hall signal controller can know should how to motor coil power supply at this time,Different hall signal, should give the motor coil for corresponding to the direction of current), that is, hole condition is different, is not the same as the current direction of the coil. Hall signals to the controller, the controller through the thick line (Not hall line)Power supply to the motor coil, motor rotation, magnetic steel and coil (Precisely in the stator coil, actually hall general installation on the stator)Rotation, induction of new hall position signal, the controller bold lines and to change the direction of current power supply to the motor coil, motor continue to spin,Coil and magnets position changes, the coil must correspond to change the direction of current, so motor can continue moving in one direction, otherwise the motor will be swinging at a certain position, rather than a continuous rotation), this is the electronic commutation.
