# Design and Experimental Validation of a Round Inductosyn-Based Angular Measurement System

## TL;DR

This paper introduces a high-precision angular measurement system using a round inductosyn, validated through experiments showing reliable and stable performance.

## Contribution

A novel system combining hardware and software for error compensation in angular measurements is proposed and experimentally validated.

## Key findings

- The system achieves residual angular error within ±3″ after compensation.
- Measurement consistency is significantly improved across repeated experiments.
- The system demonstrates good continuity and stability for high-precision applications.

## 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.