Brushless motor is a synchronous motor that uses DC power supply and realizes commutation function through electronic commutator without carbon brush and commutator, thus avoiding friction loss, spark interference and maintenance costs. Brushless motor has the advantages of high efficiency, high performance, low noise, low vibration, long life and high reliability. This paper introduces the classification of brushless motors.Classification of Brushless DC Motors1. External rotor brushless DC motor: This external rotor BLDC motor is basically the opposite of the type of internal rotor brushless motor. Also known as an external rotor brushless motor, it uses a rotating housing around a fixed internal component. External rotor BLDC motors typically use a higher number of permanent magnet poles on the rotor. This means more torque and smoother operation. The main disadvantage of the external rotor brushless DC motor is its slow speed. As a result, these types of motors are better suited for low-speed, high-torque applications.2. Inductive brushless DC motor:BLDC motor with Hall sensor is a motor that relies on the sensor to provide rotor position data. These types of brushless motors provide reliable performance at lower speeds. At lower rotational speeds, the sensor provides accurate data for smooth rotation. The motor with sensor will have the problem of delayed feedback at higher speeds, and harsh conditions such as magnetic interference or high temperature environment will also affect the sensor work, thus affecting the motor operation.3.  Sensorless brushless DC motor: This type of motor does not use Hall sensors. Instead, the controller relies on the back electromotive force generated in the stator coil to calculate the rotor position. These types of brushless DC motors offer the best performance at high speeds. You can also use them in high temperature environments because they do not use sensors. When the back electromotive force is too low or at rest to be read by the controller, the motor cannot be accurately controlled, so these motor types are suitable for high-speed, low-cost applications.4.  Single-phase brushless DC motor: the rotor used by the single-phase brushless motor is composed of a pair of north and south poles. This type of brushless DC motor design has its advantages and disadvantages. The advantage is that the motor can initially reach a very high rotation speed. On the downside, the performance of unipolar motors decreases significantly at lower speeds, which affects rotational stability and efficiency. Three-phase brushless motors use multiple magnetic poles on the rotor, up to 12 or more. As mentioned earlier, they are placed so that the opposite poles face each other. More magnetic poles provide smoother rotation, but at the expense of speed. Therefore, these types of brushless motors cannot reach high speeds and are suitable for applications with low speeds and high torque.5.  Sine wave drive brushless DC motor: sine wave driver rotates the rotor by continuously changing the voltage of the stator coil in a sinusoidal manner according to the rotation Angle of the rotor. The three phases of the motor "delay" for a specific amount of time, depending on the frequency.6.  Square wave drive brushless DC motor: square wave drive is the simplest way to drive. It switches the ON/OFF state of the electronic components according to the rotation Angle of the rotor, and then changes the direction of the current in the stator coil, thus making the rotor rotate. The rotor rotates once and the current direction changes 6 times.ConclusionSince the invention of the brushless motor, it has been plagued by technology, cost, process and other problems until the beginning of the 21st century. When the technical problems are gradually solved, the brushless motor with its excellent performance and characteristics will gradually be recognized by all walks of life, and the market share of brushless motor and its derivative products will grow rapidly.

Before understanding the working principle of brushless motors, let's first learn the right-hand screw rule two (ampere rule two), as shown in the following figure:When we hold the solenoid with the right hand, the four fingers point to the direction of the current, then the end pointed by the thumb is the N pole of the solenoid, and if the current is in the opposite direction, the north and South Pole are switched positions.As shown in the figure above, we wind the stator around the coil and pass a certain current through the coil to generate a magnetic field. Lorentz's law of force states that as long as a current-carrying conductor is placed in a magnetic field, it will experience a force. Due to the reaction force, the magnet will experience equal and opposite forces. When the coil through the current, will produce a magnetic field, the magnetic field is driven by the stator's magnetic pole, the same pole repel each other, the opposite pole attracts each other, if you continue to change the direction of the coil current, then the rotor induced by the magnetic field of the magnetic pole will continue to change, then the rotor will be rotating under the action of the magnetic field.The switching sequence of the current is mainly realized by the Hall sensor, which is mainly used to determine the conduction Angle of the power transistor in the electronic commutation circuit drive circuit, so as to determine the magnetic state of the armature field. The position of the pole of the rotor permanent magnet relative to the stator armature winding is detected by it so as to determine the switching sequence of the power transistor in the electronic commutation drive circuit.In addition to Hall magnetic sensors, brushless motors can also use other sensors, such as photoelectric and electromagnetic sensors. 

Structural AspectBrushless DC Motor: consists of a motor body and a driver, including a rotor, a stator, a sensor and an electronic controller. There is no brush and commutator, relying on the electronic controller to control the direction and size of the current in the stator winding according to the rotor position information detected by the sensor to realize the rotation of the rotor.Brush DC Motor: mainly composed of a stator (usually a permanent magnet), a rotor (composed of winding), a brush and a commutator. The brush and commutator change the direction of the current through mechanical contact, so that the rotor continues to rotate.Performance AspectBrushless DC Motor: higher efficiency, generally 85%-90%, more stable operation, low noise, almost no electrical spark, electromagnetic interference is small, due to the reduction of mechanical wear parts, long service life.Brush DC Motor: the starting speed is fast, the torque is large, but the mechanical friction between the brush and the commutator will lead to greater noise and heat during high-speed operation, and will also produce electrical sparks, which may cause electromagnetic interference to other equipment, and the efficiency is generally 75%-80%.Control AspectBrushless DC Motor: requires a complex electronic control unit to achieve accurate commutation control, usually using digital control technology, according to the rotor position sensor feedback information, precisely control the current in the stator winding on and off and order.Brush DC Motor: The control is relatively simple, by adjusting the size and direction of the DC voltage applied to both ends of the brush, you can control the speed and steering of the motor, which can be controlled by traditional analog circuits such as thyristor.Application AspectBrushless DC Motor: suitable for applications requiring high efficiency, noise, life and control accuracy, such as drones, electric vehicles, industrial automation equipment, high-end home appliances, etc. Brush DC Motor: Often used in cost-sensitive, precision requirements are not high, the need for large starting torque occasions, such as electric toys, some traditional power tools, small appliances, etc. Cost AspectBrushless DC Motor: Due to the need for components such as electronic controllers and position sensors, and high manufacturing process and material requirements, manufacturing costs are high.Brush DC Motor: simple structure, mature production process, low manufacturing cost. 

How to Select the Right BLDC Motor for Your EquipmentChoosing the right BLDC motor is an important step when developing industrial equipment, automation systems, smart devices, or other motor-driven products. A motor that is too small may not provide enough torque, while an oversized motor can increase cost, weight, and energy consumption.For equipment manufacturers and engineers, selecting a suitable brushless DC motor requires a comprehensive evaluation of voltage, speed, torque, dimensions, control method, and operating conditions.1. Determine the Required Motor VoltageThe first factor to consider is the power supply available in your equipment.Common BLDC motor voltage options include 6V, 12V, 24V and other DC voltage ranges. The selected motor should match the electrical system of the equipment.For example, Tuoke offers different BLDC motor models with operating voltage options covering different application requirements. The BLDC24 series, for example, includes models designed for 3V–24V operating ranges depending on the specific model.Before selecting a motor, engineers should confirm:DC power supply voltageAvailable voltage fluctuationController compatibilityContinuous operating voltageStarting requirements2. Check the Required SpeedMotor speed is another critical factor.Different applications require completely different operating speeds. A small fan may require high-speed operation, while an automatic feeding machine or conveyor system may require lower speed and higher torque.A BLDC motor can provide a wide speed range and precise speed control, which makes it suitable for applications requiring controlled motion.When selecting a motor, do not only look at the maximum no-load speed. It is more important to evaluate the motor's speed under the actual operating load.3. Calculate the Required TorqueTorque is one of the most important parameters when selecting a brushless DC motor.The motor needs sufficient torque to:Start the equipmentOvercome mechanical resistanceAccelerate the loadMaintain stable operationHandle temporary load changesFor example, feeding equipment may require considerably more torque than a small ventilation device because feed materials create resistance during transportation.For applications requiring higher torque at lower speeds, a BLDC gear motor can be considered. Combining a BLDC motor with a gearbox can increase output torque while reducing output speed, making it suitable for feeding machines, conveyors, and agricultural automation equipment.4. Consider the Installation SpaceMotor dimensions are especially important for compact equipment.A motor with sufficient power may still be unsuitable if its diameter or length exceeds the available installation space.Tuoke's BLDC motor portfolio covers multiple diameter ranges, including 16mm, 24mm, 28mm, 29mm, 30mm, 33mm, 36mm, 38mm, 42–57mm and 60–110mm series.This range allows equipment manufacturers to consider different combinations of:Motor diameterMotor lengthOutput powerTorqueSpeedInstallation spaceFor compact equipment, smaller BLDC motors can provide a useful balance between size and performance.5. Select the Appropriate Control MethodA BLDC motor is normally controlled electronically rather than through mechanical brushes.Depending on the application, customers may require functions such as:Speed controlDirection controlPWM controlHall sensor feedbackSpeed feedbackBrake functionIntegrated control electronicsFor example, some Tuoke compact BLDC motors provide terminals for functions such as FG, CW/CCW and PWM, allowing the motor to be integrated into electronic control systems.The control requirements should therefore be determined before choosing the final motor model.6. Consider the Working EnvironmentThe operating environment can have a significant impact on motor selection.Engineers should consider:Ambient temperatureHumidityDustVibrationContinuous operating timeInstallation orientationRequired protection levelIndustrial automation equipment may operate continuously for many hours, while consumer products may have different duty cycles.Selecting the motor based only on rated power without considering the actual operating environment can lead to premature performance problems.7. Match the Motor to the ApplicationDifferent applications require different motor characteristics.Industrial AutomationAutomation equipment generally requires accurate speed control, reliable operation, and good dynamic performance.Home AppliancesLow noise, efficiency, compact size, and long service life are often important.Power ToolsPower tools may require higher torque, high speed, and strong dynamic response.Medical EquipmentCompact dimensions, stable operation, low noise, and precise control can be important considerations.Agricultural AutomationAutomatic feeding and conveying equipment may require higher torque and reliable continuous operation. BLDC gear motors are particularly useful for applications such as feed augers, automatic feeders, and livestock conveyors.8. Why Work With an Experienced BLDC Motor Manufacturer?Choosing a motor is not always as simple as selecting a model from a catalog.For OEM projects, the motor may need to be matched with the customer's:Mechanical structurePower supplyControllerGearboxLoadInstallation dimensionsOperating environmentAn experienced BLDC motor manufacturer can help engineers evaluate these parameters and select a suitable solution.Tuoke has more than 20 years of motor manufacturing experience and provides BLDC motor products covering multiple sizes and application requirements. Its product portfolio includes compact motors for personal care, home appliances, power tools, business equipment, medical apparatus, and other applications.Choose the Right BLDC Motor for Your ProjectThe right BLDC motor should not simply be the motor with the highest power or highest speed. It should be the motor that matches the actual requirements of the equipment.Before contacting a motor supplier, it is helpful to prepare the following information:Voltage + Required Speed + Required Torque + Installation Dimensions + Load + Duty Cycle + ApplicationWith these parameters, a motor manufacturer can provide a much more accurate recommendation.If you are developing new equipment or looking for a reliable BLDC motor supplier, contact Tuoke with your motor requirements. Our engineering team can help evaluate the application and recommend a suitable brushless DC motor solution.

Long-Life BLDC Motors for Continuous Pig Farm Feeding EquipmentModern livestock farms require feeding equipment that can operate reliably through repeated feeding cycles every day. For this reason, choosing a durable Automatic Feeder Motor is essential for maintaining stable feed transportation and reducing unexpected equipment downtime.A Brushless DC Motor is a suitable drive solution for modern Pig Farm Feeding Equipment. Unlike traditional brushed motors, BLDC motors do not use mechanical carbon brushes, reducing brush-related wear and maintenance. This makes them suitable for equipment that requires frequent operation and consistent performance.In automatic feeding equipment, the motor can drive an auger, screw conveyor, or feed distribution mechanism. These components require controlled speed and sufficient torque to transport feed smoothly. A Brushless Gear Motor combines the advantages of a BLDC motor with gearbox reduction, providing suitable output speed and increased torque for feeding applications.Tuoke offers several BLDC Gear Motor options for different equipment requirements. The 42BLFAG-XMNS Series is suitable for compact feeding equipment and smaller agricultural machines. The 57BLFAG-XMNS Series provides a higher-power solution for medium-duty feeding applications. For larger equipment requiring greater power and torque, the 86BLFAG-XMNS Series can be used for demanding feeding and conveying applications.Motor selection should consider factors such as required torque, output speed, voltage, gearbox ratio, installation space, and operating conditions. Selecting the appropriate Feed Auger Motor helps manufacturers achieve smoother feed transportation and better overall equipment performance.Tuoke also supports customized BLDC Motor Solutions for OEM customers. Depending on the equipment design, customers can request different voltage specifications, gearbox ratios, shaft configurations, mounting structures, and connector options.For manufacturers of Pig Feeding Systems, reliable motor performance is an important part of equipment quality. With efficient operation, reduced maintenance requirements, and flexible customization, Tuoke's Brushless Gear Motors provide practical drive solutions for modern livestock and agricultural automation equipment.

Reliable BLDC Motor Solutions for Automatic Pig Feeding SystemsWith the continuous development of smart farming, automatic pig feeding systems have become an important solution for improving farm efficiency and reducing manual labor. A stable and reliable motor is the core power source of these systems, directly affecting feeding accuracy, equipment lifetime, and operating efficiency.The BLDC Motor (Brushless DC Motor) is widely used in modern agricultural automation equipment because of its high efficiency, long service life, and low maintenance requirements. Compared with traditional brushed motors, brushless motors eliminate carbon brush wear and provide more stable performance during long-term operation.In a pig farm automatic feeder, the motor usually drives a screw conveyor or auger system to transport feed from storage tanks to different feeding locations. This application requires the motor to provide sufficient torque, smooth speed control, and reliable operation under dusty and humid farm conditions.A Brushless Gear Motor is an ideal choice for these applications because the gearbox can reduce output speed while increasing torque. This allows the feeding system to transport feed smoothly and avoid problems caused by insufficient power or unstable operation.Tuoke provides various BLDC Gear Motor solutions for different livestock equipment requirements. The 42BLFAG-XMNS Series is suitable for compact feeding machines and small automation equipment. The 57BLFAG-XMNS Series provides higher torque performance for medium-sized feeding systems. For large farms and heavy-duty applications, the 86BLFAG-XMNS Series offers stronger output capability for long-distance feed transportation.Besides standard motor models, Tuoke also provides customized BLDC Motor solutions according to customer requirements, including voltage selection, gearbox ratio, shaft design, mounting structure, and connector customization. These flexible options help equipment manufacturers develop more efficient and reliable livestock automation systems.Choosing the right Automatic Feeder Motor can improve feeding efficiency, reduce maintenance costs, and extend equipment service life. With professional motor design experience and customized manufacturing capabilities, Tuoke provides dependable Brushless DC Motor solutions for global agricultural equipment manufacturers.