Karry Yu

How to Match a BLDC Motor With a Motor Driver?

Selecting a BLDC motor and a motor driver as separate components is not simply a matter of matching the rated voltage and current; the driver must also be compatible with the motor’s phase configuration, feedback method, electrical characteristics, speed range, torque requirements, acceleration profile, and thermal operating conditions. For OEM equipment, a correctly matched BLDC […]

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What Features Should I look for in a BLDC Motor Driver Circuit for Automotive Applications?

Quick Answer When selecting a BLDC motor driver circuit for automotive applications, engineers should evaluate the complete electrical and mechanical operating requirements rather than looking only at nominal voltage or rated current. Key features include compatible DC voltage, sufficient continuous and peak current, three-phase commutation, Hall sensor or encoder feedback, speed and torque control, current

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Aluminum Housing vs Steel Housing Motors: Which Dissipates Heat Better?

When engineers compare aluminum housing vs steel housing motors, thermal conductivity is usually the first specification they examine, but it should not be the only one. Aluminum generally transfers heat through the motor housing much more readily than steel, while the actual operating temperature of a motor depends on the complete thermal path, including winding

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Why Are BLDC Motors Being Used More and More in AGVs?

Quick Answer BLDC motors are increasingly used in AGVs because they provide high efficiency, compact size, precise speed control, low maintenance, and long operating life, making them well suited for battery-powered mobile equipment that must repeatedly start, stop, accelerate, decelerate, and change direction. Compared with brushed DC motors, a BLDC motor uses electronic commutation rather

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How to Choose Between 24V and 48V BLDC Motors?

Choosing between a 24V BLDC motor and a 48V BLDC motor is not simply a matter of selecting the higher voltage. For an engineer, the correct choice depends on required mechanical power, continuous and peak torque, operating speed, controller compatibility, battery architecture, cable length, thermal conditions, duty cycle, and the available installation space. In general,

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Brushless vs. Brushed Motors for Stairlifts: Choosing the Right Motor for the Application

At UNITED MOTION INC., our weekly Wednesday meetings are more than routine sales updates. They are also opportunities to discuss customer needs, explore new markets, and rethink how motor technology should be matched to real-world applications. Recently, Elaine, one of our sales team members, has been researching the stairlift market and the motors used in

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Company News

Encoder vs Hall Sensors in BLDC Systems — Which Do You Prefer?

For most BLDC motor applications that primarily require reliable electronic commutation and basic speed feedback, Hall sensors are usually the preferred choice because they are simple, compact, cost-effective, and sufficiently accurate for six-step commutation. An encoder is preferable when the system requires substantially finer rotor-position information, accurate speed regulation, closed-loop position control, low-speed motion control,

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Encoder Waveform Testing Completed Before Motor Shipment

UNITED MOTION INC. Performs Pre-Shipment Encoder Signal Inspection to Ensure Reliable Motor Feedback At UNITED MOTION INC., every motor with an encoder goes through a dedicated inspection process before shipment. Recently, our quality control team completed encoder waveform testing on a batch of motors to verify the stability and consistency of their feedback signals. Encoder

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How to Choose a BLDC Motor?

Choosing the correct BLDC motor is not simply a matter of matching voltage and rated power; for industrial automation, robotics, pumps, electric mobility, solar tracking, lawn equipment, and other motion-control applications, the motor must be selected as part of a complete electromechanical system in which torque, speed, acceleration, thermal behavior, controller compatibility, mechanical installation, feedback,

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Key Challenges When Using BLDC Motors in Medical Devices

The main challenges when using a BLDC motor in medical devices are electromagnetic compatibility (EMC), acoustic noise and vibration, thermal management, precise speed and torque control, long-term reliability, sterilization compatibility, and material safety. Unlike general industrial equipment, a medical device must maintain its required function under defined electrical, mechanical, thermal, and environmental conditions, so selecting

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