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

摘要:

双通道旋转变压器的解码问题一直是伺服控制闭环系统非常重要的一个问题，快速、准确的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+1LSB。

Abstract:

The decoding of dual channel resolver is always a very important problem in the servo control closed-loop system. Fast and accurate decoding of servo system position information is the key to the closed-loop control system. Through the research on the position decoding technology of a closed-loop control system of a servo system, the decoding process and principle of RD26 are analyzed, and a dual channel resolver position decoding device based on RD26 is designed. 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, which can translate the dual channel resolver into a rough machine The analog voltage signal of the fine machine is converted into a digital signal with absolute position. No error correction and coarse fine combination are required, and the decoding accuracy can reach ± 2 minutes+1 LSB.