Swiss Admitec Precision Rotary Transformer

Swiss Admitec Precision Rotary Transformer

Admotec Precision's rotary transformer plays a key role in high-speed motor production, and its core application value is reflected in four aspects: high-precision angle feedback, dynamic adaptability, anti-interference ability, long life, and low maintenance.

1High precision angle feedback: solving the core pain point of high-speed motor control

The speed of high-speed motors (such as servo motors and turbomachinery) can reach tens of thousands of revolutions per minute, and their closed-loop control system needs to obtain real-time rotor position information to achieve precise speed and torque control. Admotec rotary transformer converts the rotor angle into sine/cosine signal output through electromagnetic induction principle, with a typical angle accuracy of ± 30 arc minutes (about ± 0.5 °), and some models can reach ± 5 arc minutes (about ± 0.083 °), with a resolution of 0.1-0.2% of the full range. This high-precision feedback enables the motor to maintain dynamic balance even during high-speed rotation, avoiding vibration or efficiency loss caused by position errors.

IIDynamic adaptability: matching the harsh working conditions of high-speed motors

During the operation of high-speed motors, challenges such as high-speed rotation, high temperature, and strong vibration are often encountered. Admotec rotary transformers are adapted through the following design:

High speed response capability: The rotor is directly coupled with the motor shaft, without mechanical inertia delay, and can track speeds ranging from 58000RPM to 100000RPM (depending on the model), meeting the high-speed application requirements of turbo compressors, spindle motors, and more.

Temperature resistant design: The working temperature range covers -55 ° C to+220 ° C (depending on the model), adapting to the high temperature environment and climate conditions inside the motor.

Anti impact vibration: Adopting a solid rotor (without winding design), it eliminates the reliability problems caused by winding wear in traditional rotary transformers, and can withstand 20G impact and 10G vibration (10-500Hz), suitable for strong vibration scenarios such as oil drilling and nuclear energy equipment.

IIIAnti interference capability: ensuring the stability of high-speed motor signals

High speed motors are prone to generating strong electromagnetic interference (EMI) during operation. Admotec rotary transformers achieve anti-interference through the following technologies:

Physical magnetic field coupling transmission: The signal is transmitted through the magnetic field interaction between the stator and rotor without electrical connection, avoiding the influence of electromagnetic interference on the signal.

Constant air gap design: insensitive to eccentricity and stray magnetic fields, ensuring stable output signals even under motor shaft offset or external magnetic field interference.

Compatible with R/D converters: The output sine/cosine signal can be directly combined with a Resolve to Digital (R/D) converter to convert analog signals into digital angle/velocity information, further enhancing the signal's noise resistance.

4、 Long lifespan and low maintenance: reducing the full lifecycle cost of high-speed motors

High speed motors require high sensor lifespan due to their high-speed operation. Admotec rotary transformers achieve long lifespan through the following design:

Contactless measurement: The rotor and stator have no direct contact, eliminating mechanical wear, with a theoretical lifespan of over 100000 hours and the same cycle as the motor.

Modular structure: can be directly embedded into the motor shaft end or servo system, saving space and facilitating maintenance.

Swiss Admitec Precision Rotary Transformer