本文简要地叙述了25对极双通道旋转变压器(下称旋变)的设计特点、精度、作用;对发送机、接收机对接使用的工作原理及可能出现的八种工作状态进行了较详细的分析,并导出了失调电压与失调角度之间的函数关系;最后叙述了该种旋变绕组及电相位如何整理的方法、同时给出了同步稳定运行时旋变的误差分布规律。为有关人员正确使用旋变提供参考. This paper briefly describes the design characteristics, accuracy and function of 25 pairs of dual-channel rotary transformers (hereinafter referred to as resolver); the working principle of the transmitter and receiver docking and the possible eight working states are described in more detail The relationship between the offset voltage and the misalignment angle is deduced. Finally, the method of how to sort the resolver winding and the electrical phase is described. At the same time, the error distribution of the resolver is given. For the correct use of personnel related to resolving reference.