CPLD在雷达伺服轴角编码电路中的应用

介绍一种针对正、余弦旋转变压器—数字转换器(RDC)模块，用复杂可编程逻辑器件(CPLD)技术实现伺服轴角编码电路设计的方案。分析了轴角编码器系统中14XSZ系列旋转变压器—数字转换器的原理、轴角粗精组合原理及轴角纠错原理。详细介绍了CPLD的内部功能电路、CPLD轴角粗精组合和纠错实现电路，以及CPLD的工作时序图。提出了利用CPLD实现轴角粗精组合处理的方案，并通过了实际系统运行的考验，证明该方案可行。

The Application of CPLD in Radar Servo Encoder Circuit

This paper introduces the technology scheme to design radar servo shaft encoder circuit by using CPLD on the rotary transformer and RDC module. The principle of RDC module and shaft encoder combination of coarse code and fine code are presented. In addition, the principle of error correction is also analyzed. The circuits of function, the combined circuits and the working clock drawing in CPLD are discussed in detail. This paper provides a scheme for designing the encoder in CPLD, the method of realization is proved in the practical system.