感应同步器动态误差分析及修正

Analysis and Correction of Dynamic Error in Inductosyn

运动波源会产生多普勒效应,运动物体发出的电信号也同样会产生多普勒效应,造成信号频率的改变,不但对测量造成了动态误差,甚至会对后续计算造成错误。以双相激磁单相输出鉴相型感应同步器测角系统为基础,参照多普勒效应原理,探讨了转动机构中动态误差的产生机理和模型,并提出了便于数字系统实现的修正算法。该算法和模型对同类转动系统及动态采集系统也具有很好的参考价值。

The moving wave source will produce Doppler effect. The electrical signal generated by moving objects produces Doppler effect as well,which changes the signal frequency. It causes not only dynamic measurement errors,and may even make mistakes in subsequent calculation. According to Doppler effect principle,the generation mechanism and model of dynamic error in rotation system is discussed,and puts forward the correction algorithm realized easily in the digital system,on the basis of phase-type inductosyn angle measurement system. The algorithm and model also have valuable reference for the similar rotation systems and dynamic acquisition systems.