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BLDC motor is an abbreviation of brushless DC motors, also known as electronic commutation motor (referred to as ECM or EC motor) of brushless feature, and also known as synchronous DC motor with brushless characteristics. Brushless DC motors are a very common motor devices that can work with stable output motors’ torque forces that can be ideal brushless actuators.
Brushless DC motor is an abbreviation of brushless DC electric motors., also known as electronic commutation motors, and also known as synchronous DC brushless motors with good actuators quality. Permanent magnet is one of the motors brushless’ important parts.
Brushless DC motors are synchronous motors that are driven by direct current through an inverter that sends out alternating current to activate each phase of the motor torques through a closed-loop controller of motors brushless. The torque can be either great or be small but overall the torque force is steady so they can be perfect brushless actuators.
At the same time, the controller provides current pulses to the motor windings to control the torque and speed of the motor equipment, offering an always steady torque forces. In general, the structure of a brushless motor system is the same as or similar to permanent magnet synchronous brushless motor actuators (PMSM for short). The former can be regarded as a switched reluctance motor or an induction brushless motor, but not a synchronous motor. And the torque qualities of these items are different.
Compared with brushed motors, brushless motors have a higher power-to-weight ratio, higher speed, better electronic control, stable torque, and lower maintenance costs. Based on these advantages, brushless DC motors are widely used in many scientific practices due to its multiple torque options based on the brushless structures.
According to practical conventions, robot science usually uses ordinary DC and AC servo motors. Recently, AC servo motors have also been widely used, because control becomes easier than before, and these motors can withstand better torque. The price of the servo motor is generally high, so the standard sensor installed is usually an optical sensor with a selected resolution.
With the introduction of Brushless DC motors, today's industrial robotic arms can move heavy objects with high positioning precision due to its brushless features, but at a lower cost than other alternatives. Therefore, many robotic arms used in industry are equipped with brushless DC motors to provide the best output quality for production lines.
Linear motors are devices that can produce linear motion without a transmission system. The conventional transmission system needs to include many components, such as rack and pinion, ball-and-lead screws, cams, etc. A rotary motor needs to be composed of the above components. Linear motors are different from conventional brushless dc motors in that the linear motion can grant many movements that cannot be done by traditional brushless dc motors.
Therefore, the brushless dc motors designed with linear mobility would be called as another term. The design of the brushless DC linear motor includes a slotted stator with magnetic teeth and a moving actuator. Actuators usually have permanent magnets and coil windings. In order to obtain linear motion, the motor controller attracts the coil windings in the actuator, which leads to the activation of the magnetic field, thus achieving linear motion.
Read More: What is a Linear Motor?
In the fields of automation and 3C consumables electrical, manufacturers who need to carry out new processing tasks tend to purchase machining centers with robotic arm attachments to achieve a wider range of applications. The machine tool is the most basic equipment of the manufacturer, and plays a vital role in determining the output of the production line, and the robot arm or other automated equipment is the key to determining the quality of the product. The design improvement of brushless dc motors keeps its pace and the result is ever changing.
The types of Brushless DC motors and machine tools are changing at any time. After the machining center and programmed control system (CNC, computer numerical control) were invented, the machining requirements became more and more strict compared with previous. Contains CNC machining centers, as well as CNC turning centers, CNC milling machines, CNC tapping and milling centers, CNC drilling and milling machines, and other customized mechanical models, all of which can be integrated with automated systems.
Since some machine tools belonging to the series of machining centers also try to be versatile, the servo motors they use must also have flexibility. Although they are not as flexible as machining centers, they can be very variable in motion control. Therefore, this type of machine is usually used for customized machining tasks. Because today's accuracy requirements are more stringent than ever, consumers on the market demand better product quality and shorter waiting times, which are all challenges for manufacturers. Brushless DC motors help these tasks for manufacturers.
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