T: +86-15800900153
E: songwenyan@windouble.com.cn
E: songwenyan@windouble.com.cn
No.1230, Beiwu Road, Minhang District,Shanghai,China
| Quantity: | |
|---|---|
J56XU9734
Windouble
Main Parameters
| Model | J56XU9732A | J56XU9733A | J56XU9734C |
| 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 | ≤ ±15° | ≤ ±16° | ≤ ±15° |
| Dielectric Strength | AC 500 Vrms 1sec | ||
| Insulation Resistance | 250 MΩ min | ||
| Rotor Inner Diameter | 9.52 mm | 9.52 mm | 18 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℃ | ||
About Variable Reluctance Multi-pole Resolvers
The variable reluctance resolver is a multi-pole angle sensor that functions as a non-contact, variable magnetic reluctance coupling transformer. The structure differs from traditional multi-pole rotary transformers by placing both the excitation and output windings in the slots of the stator core, with the rotor made of laminated toothed plates without any windings, achieving contactless operation. While traditional rotary transformers offer basic angle and speed measurements, their precision is limited to the order of minutes of arc, making them suitable for low-precision requirements or rough and medium measurements in large machine tools. To bridge this precision gap, variable reluctance multi-pole resolvers have become widely adopted in modern numerical control systems for their enhanced accuracy.
Unique Design Features
The stator core's inner periphery is stamped with several large teeth (also known as pole shoes), each with an equal number of smaller teeth.
The output and input windings are concentrated and wound in a way that the number of turns of the sine and cosine windings varies according to the sine law. Traditional multi-pole rotary transformers use distributed windings, whereas the variable reluctance resolver does not.
Working Principle
When an AC sinusoidal voltage is applied to the input winding, the two output windings receive voltages whose amplitudes primarily depend on the relative position between the stator and rotor teeth and the air gap magnetic conductance.
As the rotor rotates relative to the stator, the air gap magnetic conductance changes, with each rotor tooth pitch corresponding to a cycle of change in the air gap magnetic conductance.
The number of rotor teeth equates to the pole pairs of the variable reluctance multi-pole resolvers, achieving a multi-pole effect, with changes in the air gap magnetic conductance leading to changes in mutual inductance and induced potential in the output windings.
Advantages
No brushes or slip rings for reliable operation and strong impact resistance.
Capable of continuous high-speed operation with a long service life.
Used in high-precision control systems, enhancing the positioning accuracy of CNC machines.
Main Parameters
| Model | J56XU9732A | J56XU9733A | J56XU9734C |
| 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 | ≤ ±15° | ≤ ±16° | ≤ ±15° |
| Dielectric Strength | AC 500 Vrms 1sec | ||
| Insulation Resistance | 250 MΩ min | ||
| Rotor Inner Diameter | 9.52 mm | 9.52 mm | 18 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℃ | ||
About Variable Reluctance Multi-pole Resolvers
The variable reluctance resolver is a multi-pole angle sensor that functions as a non-contact, variable magnetic reluctance coupling transformer. The structure differs from traditional multi-pole rotary transformers by placing both the excitation and output windings in the slots of the stator core, with the rotor made of laminated toothed plates without any windings, achieving contactless operation. While traditional rotary transformers offer basic angle and speed measurements, their precision is limited to the order of minutes of arc, making them suitable for low-precision requirements or rough and medium measurements in large machine tools. To bridge this precision gap, variable reluctance multi-pole resolvers have become widely adopted in modern numerical control systems for their enhanced accuracy.
Unique Design Features
The stator core's inner periphery is stamped with several large teeth (also known as pole shoes), each with an equal number of smaller teeth.
The output and input windings are concentrated and wound in a way that the number of turns of the sine and cosine windings varies according to the sine law. Traditional multi-pole rotary transformers use distributed windings, whereas the variable reluctance resolver does not.
Working Principle
When an AC sinusoidal voltage is applied to the input winding, the two output windings receive voltages whose amplitudes primarily depend on the relative position between the stator and rotor teeth and the air gap magnetic conductance.
As the rotor rotates relative to the stator, the air gap magnetic conductance changes, with each rotor tooth pitch corresponding to a cycle of change in the air gap magnetic conductance.
The number of rotor teeth equates to the pole pairs of the variable reluctance multi-pole resolvers, achieving a multi-pole effect, with changes in the air gap magnetic conductance leading to changes in mutual inductance and induced potential in the output windings.
Advantages
No brushes or slip rings for reliable operation and strong impact resistance.
Capable of continuous high-speed operation with a long service life.
Used in high-precision control systems, enhancing the positioning accuracy of CNC machines.
