本文介绍了一种基于旋转变压器-数字转换器芯片AD2S83 和DSP 的感应同步器测角系统的设计与实现。本设计中通过RC 振荡电路为感应同步器转子提供单相激磁信号，定子上感应出来的正弦和余弦两路信号通过仪表放大器的差分放大之后提供给基于跟踪型测角原理的转换芯片AD2S83，通过FPGA 实现数字逻辑控制以及地址解码，将转换后的16 位并行转角数据以及方向信号送入DSP 中。本设计实现了一种稳定高效的跟踪式数字测角系统，具有很好的扩展性。关键词：感应同步器；跟踪型测角；前置放大；数字信号处理器Abstract: A design of synchro goniometric system based on resolver-to-digital converter chipAD2S83 and DSP is introduced in this paper. In this design, a single-phase exciting signalgenerated by RC oscillatory circuit is applied to the rotor of synchro. The sine and cosine signals induced on stator are amplified by instrumentation amplifier and connected to the converter AD2S83, which is designed according to tracking goniometry. Digital logic control and address encoding are processed by FPGA, and the converted 16-bit parallel angle data and direction signal are transferred to DSP. This design implements a stable and efficient digital tracking angle measuring system with fine augmentability.Key words: synchro ; tracking angle measuring; preamplifier; digital signal processor