Classification And Characteristics of Resolver Sensors
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Classification And Characteristics of Resolver Sensors

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Resolver sensors are commonly used in various industrial applications to measure angular position, velocity, or acceleration. They are robust and reliable devices that can withstand harsh environmental conditions. Here's a breakdown of their classification and characteristics:


  1. Type:

    • Single-Speed Resolver: Measures position or velocity at a single speed.

    • Multi-Speed Resolver: Measures position or velocity at multiple speeds.

  2. Operating Principle:

    • Inductive Resolver: Utilizes electromagnetic induction to determine angular position.

    • Optical Resolver: Employs optical principles for angular position measurement.


  1. Angular Resolution:

    • Resolver sensors typically offer high angular resolution, providing precise measurement of angular position.

  2. Accuracy:

    • They offer high accuracy in position measurement, often with minimal error margins.

  3. Durability:

    • Resolvers are known for their robustness and durability, making them suitable for harsh environments with temperature variations, vibrations, and electromagnetic interference.

  4. Temperature Range:

    • They can operate over a wide temperature range, from very low to very high temperatures, without significant degradation in performance.

  5. Response Time:

    • Resolvers generally have fast response times, making them suitable for applications requiring real-time feedback.

  6. Cost:

    • While resolvers are highly reliable, their manufacturing process and materials can make them relatively expensive compared to some other sensor types.

  7. Maintenance:

    • Resolvers often require minimal maintenance due to their rugged design and lack of internal moving parts.

  8. Compatibility:

    • They can interface with various control systems and are compatible with analog and digital signal processing methods.

  9. Environmental Resistance:

    • Resolvers are resistant to dust, moisture, and other environmental contaminants, making them suitable for use in challenging conditions.

  10. Signal Conditioning:

    • Depending on the application, resolver signals may require conditioning to enhance accuracy and compatibility with the control system.

  11. Integration:

    • They can be integrated into various systems such as motors, actuators, and robotic arms for position feedback and control.

Resolver sensors are widely used in aerospace, automotive, industrial automation, and military applications where accurate and reliable angular position sensing is critical.




SDM Magnetics is one of the most integrative magnet manufacturers in China. Main products : Permanent magnet,Neodymium magnets,Motor stator and rotor, Sensor resolvert and magnetic assemblies.
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