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Design and Experimental Validation of a Round Inductosyn-Based Angular Measurement System
Jian Wang1,2, Jianyuan Wang1,2, Jinbao Chen1,2
1College of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China.
Micromachines
|January 28, 2026
Summary
This study introduces a high-precision angular measurement system using a round inductosyn. The system achieves accurate and stable measurements with residual errors within ±3 arcseconds, enhancing servo control and aerospace applications.
Area of Science:
- Engineering
- Measurement Science
Background:
- High-precision angular measurement is critical for advanced control systems.
- Existing systems face challenges with accuracy and stability.
Purpose of the Study:
- To design and validate a high-precision angular measurement system.
- To achieve stable and accurate angle measurements using a round inductosyn.
Main Methods:
- Developed dedicated hardware circuits for excitation, signal conditioning, and resolver-to-digital conversion.
- Implemented software algorithms for data fusion and error compensation.
- Conducted experimental validation over a full rotation.
Main Results:
- Achieved residual angular error within ±3 arcseconds after compensation.
- Demonstrated significant improvement in measurement consistency across repeated experiments.
- Verified good continuity and stability of the output angle.
Conclusions:
- The proposed system effectively suppresses nonlinear errors.
- The system is feasible and effective for high-precision servo control.
- The system is suitable for aerospace attitude measurement applications.
Keywords:
angular measurement systemcoarse–fine data fusionlinear interpolation error compensationresolver-to-digital converterround inductosynMore Related Videos
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