English 
T: +86-15800900153
E: songwenyan@windouble.com.cn
E: songwenyan@windouble.com.cn
No.1230, Beiwu Road, Minhang District,Shanghai,China
| Quantity: | |
|---|---|
J37XU973
Windouble
Main Parameters
| Model | J37XU9732T | J37XU9733T | J37XU9734T |
| Pole Pairs | 2 | 3 | 4 |
| Input Voltage | AC 7 Vrms | AC 7 Vrms | AC 7 Vrms |
| Input Frequency | 10000 Hz | 10000 Hz | 10000 Hz |
| Transformation Ratio | 0.286 ±10% | 0.286 ±10% | 0.286 ±10% |
| Accuracy | ≤ ±60' | ≤ ±40' | ≤ ±30' |
| Phase Shift | TBD | TBD | -14° ±5° |
| Dielectric Strength | AC 500 Vrms 1sec | ||
| Insulation Resistance | 250 MΩ min | ||
| Rotor Inner Diameter | 9.52 mm | 9.52 mm | 12 mm |
| Wire Cross Sectional Area | 0.35 mm² | 0.35 mm² | 0.35 mm² |
| Maximum Rotational Speed | 30000 rpm | 30000 rpm | 30000 rpm |
| Operating Temperature Range | -40℃ to +155℃ | ||
Working Principle
The operation of the variable reluctance resolver is based on the spatial air-gap permeability changes as the rotor rotates relative to the stator. Each cycle of permeability change corresponds to a pitch rotation of the rotor, and multiple cycles occur with each revolution. These changes in air-gap permeability lead to variations in mutual inductance between the input and output windings, resulting in induced potential changes in the output winding.
Advantages
No coupling transformer, brush, or contact structure required.
Simple construction, low cost, and minimal environmental demands.
Facilitates easy integration of the transmission system.
Ideal for high-precision control in motor and CNC systems.
Applications
The variable reluctance resolver is particularly well-suited for applications requiring high-precision angular position sensing. It is widely used in:
Automotive electronic power steering (EPS)
Electric vehicles
Mining machinery
High-speed rail systems
