The rotary transformer is a core sensor for the drive motor in new energy electric vehicles. It utilizes the principle of electromagnetic induction to convert the rotor's angle, speed, and direction into sine and cosine electrical signals, quickly transmitted to the motor controller ,millisecond-le

Many people are curious about how magnetic products can be applied in the cosmetics field. Today, we’d like to introduce a magnetic closure for cosmetic packaging, developed by SDM.Nowadays, many high-end cosmetic brands are focusing on more refined and humanized design, moreover, the adoption of ma

Recent export control policies on rare earth-related products in China have sparked widespread industry concern. Many clients are concerned about potential obstacles in procuring samarium-cobalt (SmCo) and neodymium-iron-boron (NdFeB) permanent magnet materials. Challenges such as “compliance diffic

Dear friends, today SDM will introduce to you the role of the SDM resolver sensor in electric tricycles! The resolver is mainly applied in the drive motors of electric freight (heavy-duty)/high-speed/high-end tricycles . It can be directly adapted to a wide range of tricycle drive motors, measuring

A resolver is an electromagnetic sensor that measures the rotation Angle, speed, and position signals of a rotating mechanism. Compared with many other common sensors, it has the advantages of high precision, high reliability, strong anti-interference ability, wide working range, simple structure, h

** Ferrite magnets, also known as ceramic magnets, are widely used in various electronic and industrial applications due to their cost-effectiveness, good magnetic properties, and resistance to demagnetization. Composed primarily of iron oxide (Fe₂O₃) combined with strontium (Sr) or barium (B

High-speed motor rotors (operating at **10,000 RPM to 100,000+ RPM**) require advanced bearing technologies to minimize friction, vibration, and wear. Traditional mechanical bearings (e.g., ball or roller bearings) face limitations at extreme speeds due to **heat generation, lubrication demands, an

## **Introduction** High-speed motor rotors are critical components in modern electromechanical systems, enabling superior performance in applications such as turbochargers, electric vehicles (EVs), aerospace propulsion, and industrial spindles. Unlike conventional rotors, high-speed variants are d

A resolver, also known as a synchronous resolver, is an electromagnetic sensor designed to measure rotational angles with high precision. Its operation hinges on the principle of electromagnetic induction, where the interaction between a stator (fixed component) and a rotor (rotating component) gene

Magnetic encoders and optical encoders are two prevalent types of position sensors used in various applications to measure linear or angular displacement. Each type has its own set of advantages and disadvantages, which can influence the choice of encoder for a specific application.**Advantages of M