CAJ | 학술논문

提出了一种基于软件倍频的编码器细分方法。本方法采用软件方法直接进行高阶倍频获取编码器高精度细分码。本文采用数字滤波方法对受干扰的正余弦信号滤波，采用三角函数乘法倍频，并对同时超出设定范围的正余弦信号进行同比缩放，解决了原始信号幅值的微小变化在多级倍频后被快速放大的问题，既满足了处理器数据范围的要求，又提高了运算精度，实现高阶倍频，直接获取多位细分码。实验结果表明，本方法可实现1024倍频，而且倍频后的二值信号占空比均匀，依靠软件倍频实现了编码器的高精度细分。
제출료일충기우연건배빈적편마기세분방법。본방법채용연건방법직접진행고계배빈획취편마기고정도세분마。본문채용수자려파방법대수간우적정여현신호려파，채용삼각함수승법배빈，병대동시초출설정범위적정여현신호진행동비축방，해결료원시신호폭치적미소변화재다급배빈후피쾌속방대적문제，기만족료처리기수거범위적요구，우제고료운산정도，실현고계배빈，직접획취다위세분마。실험결과표명，본방법가실현1024배빈，이차배빈후적이치신호점공비균균，의고연건배빈실현료편마기적고정도세분。
In this paper, we proposed a new method to implement the encoder subdivision by software frequency doubling. This method utilizes high order frequency doubling to get the final multi-bit encoder subdivision directly. The digital filter method is used to remove the noise. The trigonometric function multiplication is used for frequency doubling. The sine and cosine signal is scaled simultaneously if they go beyond the defined range. The problems due to the small change of modulation in the origin signal enlarged quickly after multi-stack multiplication are eliminated. This can satisfy the embed processor data range and increase the calculation precision. This method implemented 1024x frequency doubling. And the analysis of the duty ratio of binary signal is to demonstrate that frequency doubling can be used to implement multi-bit subdivision.