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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.
Abstract:
This paper presents the design, implementation, and experimental validation of a high-precision angular measurement system based on a round inductosyn. Dedicated hardware circuits, including excitation, signal conditioning, and resolver-to-digital conversion modules, together with software algorithms for coarse-fine data fusion and linear interpolation-based error compensation, are developed to achieve accurate and stable angular measurement. Experimental results obtained from repeated measurements over a full rotation demonstrate reliable system operation and effective suppression of nonlinear errors. After compensation, the residual angular error is limited to within ±3″, while measurement consistency across repeated experiments is significantly improved. The output angle exhibits good continuity and stability, confirming the feasibility and effectiveness of the proposed system for high-precision servo control and aerospace attitude measurement applications.
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