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工程实用的高精度感应同步器测角系统因安装及校准等条件的限制,有时难以应用圆光栅进行误差密集测补来提高精度。针对该问题研究了一种稀疏误差采样及补偿方法。在分析感应同步器测角系统误差特性的基础上,提出先测补零位误差引起的细分误差成分,再处理剩余细分误差的方式,给出了由棱体获取全面、有效零位误差的方法及应用稀疏误差数据补偿的具体过程。实验表明:应用该方法后某测角系统精度由最大误差峰峰值11.7″提升至2.9″。该方法零位误差剔除充分,实现了稀疏采样条件下感应同步器测角系统误差的全范围有效补偿。
Engineering practical high-precision induction synchronizer angle measurement system due to installation and calibration conditions, it is sometimes difficult to use circular grating error-intensive testing to improve accuracy. Aiming at this problem, a sparse error sampling and compensation method is studied. Based on the analysis of the error characteristics of the angle-measuring system of the induction synchronizer, this paper proposes the method of measuring the error components caused by zero-offset errors and then processing the remaining sub-errors, and obtains the full and effective null error Method and application sparse error data compensation process. Experiments show that the accuracy of a goniometer system is improved from the peak error of 11.7 “to 2.9” after applying this method. The zero error of the method is removed sufficiently, and the full-range effective compensation of the angle error of the induction synchronizer under the sparse sampling condition is achieved.