What is a DC brushed motor?
DC brush motor is a rotating motor with brush device to convert DC electric energy into mechanical energy (DC motor) or mechanical energy into DC electric energy (DC generator). Different from DC brushless motor, brush device is used to introduce or lead in DC voltage and DC current. DC brush motor is the basis of all motors. It has the characteristics of fast start, timely braking, smooth speed regulation in a large range, relatively simple control circuit and so on.BLDC motor,Permanent Brush Motor
Composition and classification of DC brushless motor，DC motors:
The components of the basic structure of DC brush motor include stator, rotor, brush and commutator. The stator and rotor magnetic fields interact to drive the motor to rotate. The type of Brushless DC motor is divided according to the generation mode of magnetic field in motor stator or housing. Depending on the type of Brushless DC motor, the stator magnetic field can be generated by permanent magnets or windings in the stator. In the latter case, the stator winding and rotor winding can be connected in parallel, serial, or mixed mode. These three kinds of Brushless DC motors are called parallel motor, series motor and compound motor respectively.
Principle of DC brush motor，Brushed DC (BDC) motors
The stator generates a static magnetic field. This static magnetic field surrounds the armature (or rotor). The external power supply excites the armature magnetic field. There are also two arc-shaped copper sheets on the motor shaft of the DC brush motor, which are called commutators. When the motor rotates, the carbon brush slides on the commutator. In this way, a rotating magnetic field attracted by the static magnetic field of the stator can be generated. The current in the armature and stator windings is supplied by batteries or other DC power sources (permanent magnet DC brushless motor has no stator winding). The battery (or DC power supply) provides a constant DC voltage. The voltage amplitude determines the speed of the motor, so the battery or DC power supply is a linear excitation source. The most effective way to change the speed of DC brushless motor is to use pulse width modulation (PWM) technology. PWM technology switches constant voltage source with fixed frequency. The motor speed can be adjusted by changing the pulse width of PWM signal. The ratio between the high and low levels of the pulse is called the duty cycle of the PWM signal. The amplitude of DC battery level is equal to the average amplitude of PWM signal
Application of DC brush motor:
DC brush motor has good starting and speed regulation performance, and is often used in occasions with high requirements for starting and speed regulation, such as large reversible steel rolling mill, mine winch, hotel high-speed elevator, gantry planer, electric locomotive, diesel locomotive, urban tram, subway train, electric bicycle, papermaking and printing machinery, marine machinery Large precision machine tools, large cranes and other production machinery.
Brand selection of DC brush motor:
FBelec has focused on motor production for more than 20 years, with guaranteed quality and low price.
NINGBO FBELE ELECTRONICS CO.,LTD.
FBELE company was founded in 1997, is China's leading manufacturer of acoustic and other electronic components, we designs,manufactures, distributes high quality products in very competitive price, bestservice, timely delivery, small order acceptable, etc. Our products include piezo ceramic element, piezoelectric buzzer, magnetic buzzer,speakers, transducer, receiver, electret condenser microphone, magnetic contact. Piezoelectric alarm,ultrasonic sensor,PZT ceramics,etc.
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