In industrial automation equipment, CNC machine tools, robot joints, servo motors, and similar applications, optical encoders are common angle and position feedback components. However, they have a "delicate" weakness: they are sensitive to dust, oil, vibration, and high temperatures. Once the inter

In fields such as high-speed motors, aviation electric drives, air compressors, and flywheel energy storage, rotor speeds are continuously increasing, and permanent magnets face significant tensile stress risks due to centrifugal forces. To protect the permanent magnets and ensure rotor structural i

In high-performance motion control applications such as servo motors, robot joints, and electric spindles, magnetic encoders are gaining popularity due to their small size, oil resistance, vibration tolerance, and low cost. However, many engineers encounter a thorny issue during high-speed rotation

In applications such as new energy vehicle electric drives and industrial servos, reluctance-type resolvers are widely used as motor rotor position sensors. They contain no semiconductor chips, withstand high temperatures, and resist vibration -they appear very “rugged.” However, many engineers enco

I. The Problem: The Hidden Risk of Robot “Joint” FailureIn industrial robots, collaborative robots, and precision servo systems, magnetic encoders play a critical role as “joint sensors.” They detect changes in the magnetic field of the encoder disk (magnetic ring) and provide real-time feedback on

Introduction: An Indispensable "Eye" for Motor ControlIn the drive motor of new energy vehicles, there is an inconspicuous yet critically important component -the variable reluctance resolver (often shortened to "resolver"). It acts as the motor's "eye," constantly telling the motor controller: "Whe

In micro-motors, stepper motors, servo systems, magnetic encoders, and various high-precision sensors, the multi-pole magnetic ring is a core component. It acts like a “magnetic gear” with alternating N and S poles, providing precise rotational position and speed information for the equipment. Howev

Magnetic levitation motors, with their advantages of contactless operation, zero friction, and high efficiency, are gradually replacing traditional motors as the mainstream choice for high-speed rotating machinery. However, during high-speed operation, even the slightest mass eccentricity in the mag

In high-precision motion control applications such as robot joints, servo motors, and gimbals, magnetic encoders are increasingly becoming the core position-feedback devices, thanks to their non-contact operation, immunity to contaminants, and compact size. However, many engineers encounter a frustr

I. What Is a Magnetic Levitation Motor Rotor?When people hear “magnetic levitation,” many immediately think of the maglev train that “flies” along the track at Shanghai Pudong Airport. But few know that the same magnetic levitation technology has long since moved from the rails into bearings.A magne