自整角机是一种被广泛应用的微控制电机，它既能作为传感器测量远距离机械装置的角度位置，也可以控制远距离设备装置的角度位移。应用跟踪型模拟信号转16位数字单片变换器RD-19230，将自整角机输出的模拟信号转化为数字角度信号，介绍了自整角机的基本原理，设计了RD-19230与自整角机的接口电路。测试证明，该电路的设计方法可靠性好，精度高，抗干扰能力强，能够完全满足高速自整角机控制系统的要求。 　　Abstract: 　　Synchro is a widely used micro-control motor， it is not only used as a sensor to measure the angle and position of the remote mechanical devices， but also control the angle of displacement of remote installations. This article will use the 16-bit monolithic tracking resolver-to-digital converter to transform the synchro output of analog signals into digital signals，introduce the basic principle of synchro and design the interface circuit of the RD-19230 and synchro.Tests prove the good reliability of circuit design， high precision， strong anti-interference， it can fully meet the requirement of rapid synchro control systems.