Admotec Precision Rotary Transformer

Admotec Precision Rotary Transformer

Admotec Precision (Switzerland, often mistakenly referred to as "Italy") rotary transformers can establish a foothold in the field of new energy vehicles, with the core being a combination of technology adaptation, supply chain certification, scenario customization, and cost optimization, accurately matching the strict working conditions of core systems such as drive motors and EPS. The following analysis will be conducted from key support dimensions.

The core competitiveness of Admotec Precision rotary transformers lies in technology adaptation, supply chain certification, and full lifecycle cost advantages. By solving the three core pain points of "reliability, environmental tolerance, and integration efficiency" in new energy vehicles, it has gradually become the preferred solution for driving motors and steering systems. Its success is not simply about technology, but a "technology+business" dual wheel drive that precisely matches the needs of car companies.

Typical application scenario: Full link coverage from drive to steering

Drive motor rotor position detection

Suitable for permanent magnet synchronous motor (PMSM) commutation control, providing real-time angle signals to ensure smooth power output;

Representative model: RO3620-M-R012, with a speed of 100000RPM, suitable for commercial vehicles/high-performance passenger car motors.

Electric Power Steering (EPS)

High precision angle feedback, supporting coordinated control of steering torque and angle, enhancing the handling feel;

Advantages: Low power consumption, small size, suitable for column/rack EPS installation space.

Admotec Precision rotary transformers play an important role in the field of new energy vehicles due to their high precision, high reliability, strong environmental adaptability, fast dynamic response, strong resistance to electromagnetic interference, compact structure, and customized services. The specific analysis is as follows:

High precision measurement capability: By calculating the angle position through the phase difference of sine/cosine signals, the accuracy can reach ± 5 arc minutes (about ± 0.083 °), and some models even reach ± 1 arc minute (about ± 0.0167 °). This high-precision feature ensures that the drive motor of new energy vehicles can accurately phase change according to the rotor position, improving the smoothness of power output; The electric power steering system can accurately capture changes in the steering shaft angle, achieving lightweight and precise steering operations.

High reliability and long lifespan: Adopting a brushless design, the rotor is a solid metal structure without windings or slots, eliminating the risk of faults caused by winding wear in traditional rotary transformers. Its theoretical lifespan is the same as that of the equipment (up to 100000 hours or more), and it can operate stably in harsh environments such as immersion in hydraulic oil or highly corrosive liquids, meeting the stringent requirements of new energy vehicles for sensor durability.

Strong environmental adaptability: The working temperature range covers -70 ° C to 220 ° C, and can withstand pressures up to 1600 bar. Some models can even be used in deep-sea exploration or nuclear equipment scenarios. For example, the RO3620-M-R012 model can operate within the range of -55 ° C to+155 ° C, with a speed of 100000RPM, ensuring that new energy vehicles can still accurately measure under high temperature, high pressure, or high-speed conditions.

Fast dynamic response: The rotor is directly coupled with the motor shaft, tracking the rotation status in real time with low signal delay, and can adapt to high-speed rotation of tens of thousands of revolutions per minute (such as servo motors and turbomachinery). Its low inertia design ensures fast response and is suitable for closed-loop control systems that require high-frequency position updates, such as robot joint control or electric power steering systems in new energy vehicles.

Strong anti-interference ability: Based on the principle of electromagnetic induction, signals are transmitted through physical magnetic field coupling, and have natural immunity to electromagnetic interference (EMI). In the strong electromagnetic environment of new energy vehicles (such as near motor drive systems and high-voltage battery packs), their signal stability is much better than traditional optical encoders or Hall sensors, ensuring reliable data transmission.

Compact structure and customized services: The product is small in size and light in weight, and can be directly embedded into the motor shaft end or servo system, saving space. For example, the RO3620-M-R012 model has a stator outer diameter of only 36.83mm, a hollow shaft inner diameter of 20mm, and a rotor diameter of 19.4mm, which is very suitable for the miniaturization needs of sensors in new energy vehicles. At the same time, Admotec Precision provides customized services to optimize size, temperature range, and anti vibration performance according to different vehicle models and operating conditions, consolidating its supporting position in the electric drive system.

Product features

Structural design: Adopting a solid rotor and no winding design, it reduces the possibility of wear and failure. Compared with traditional brushless rotary transformers, it has fewer parts, simpler structure, and significantly improved reliability.

Performance advantages: High precision, accuracy better than ± 18 arc minutes, repeatability better than ± 1 arc minute; Capable of withstanding pressures up to 1600 bar and speeds up to 10000 RPM; The working temperature range is wide and can be used between -196 ° C and approximately+220 ° C.

Environmental adaptability: It can operate when the rotor is immersed in liquid, such as hydraulic oil, and is suitable for harsh environments such as aerospace, underground, nuclear energy, etc; Equipped with sealed cables, connectors, and spline couplings, it has strong anti-interference ability and can withstand vibration and impact.

Compatibility: It is compatible with traditional brushless rotary transformers through mechanical and electrical means, making it easy to replace rotary transformers in original or existing equipment.

Main models of Admotec Precision

Including RO2010, RO2613, RO3620, RO5032, RO6040, RO7557, RO8565, RO10080, etc. Taking RO2010 as an example, it is a frameless No. 8 solid rotor rotary transformer with a stator outer diameter of 20 millimeters and an air gap diameter of 10 millimeters, suitable for shafts with a diameter of up to 4 millimeters.

Admotec Precision Rotary Transformer