基于RD26的双通道旋转变压器位置解码设备的设计

Design of Dual Channel Resolver Position Decoder Based on RD26

双通道旋转变压器的解码问题一直是伺服控制系统非常重要的一个问题,快速、准确地解码出伺服系统位置信息是闭环控制系统的关键;通过对某伺服系统闭环控制系统位置解码技术的研究,分析了RD26的解码过程及原理,设计一种基于RD26的双通道旋转变压器位置解码设备,此设备将双通道旋转变压器输出的信号与RD26相连,通过并口向FPGA发送数据,FPGA通过时序读取RD26信号,能将双通道旋转变压器粗机、精机的模拟电压信号转换成具有绝对位置的数字信号,不需要再进行纠错与粗精结合,解码精度可达到±2角分和1 LSB。

Dual channel resolver decoding is always a very important problem in servo control system.The rapid and accurate decoding of servo system position information is the key to the closed-loop control system.The position decoding technology of a servo closed-loop control system is researched to analyze the decoding process and principle of RD26,and design a dual channel resolver position decoding device based on RD26.This device connects the signal output by the dual channel resolver with RD26,sends data to FPGA through the parallel port,and FPGA reads the RD26 signal through the time sequence,the analog voltage signals of the coarse and finechannelresolver can be converted into thedigital signal with absolute position.No error correction and coarse fine combination are required,and the decoding accuracy can reach±2 arc seconds and1 LSB.