DSP-Solution for High-Resolution Position with Sin/Cos-Encoders
DSP-Solution for High-Resolution Position with Sin/Cos-Encoders
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带正弦/余弦编码器的高分辨率位置 DSP 解决方案
DOI：
10.1109/icsem.2010.164
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
Ling Shen
中科院分区：
文献类型：
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作者：
Ling Shen
提出了一种基于数字信号处理器(DSP)的SIN/COS编码器实现高分辨率定位的解决方案。这是通过最小的粘合逻辑和软件开销实现的，因为DSP控制器已经集成了片上正交编码器脉冲(QEP)电路以及两个模数转换器(ADC)。QEP电路为TTL编码器提供了一个无胶接口。两个模数转换器提供对SIN/COS编码器的两个正弦输出信号的同时采样。该软件包包括使用SIN/COS编码器进行初始化和位置内插所需的所有功能。所有子例程都与ANSI C兼容，可以从任何C程序中调用。该方案达到了预期的效果。
This paper offers a solution for obtaining high-resolution position with sin/cos-encoders using the DSP (TMS320F240). This is achieved with a minimum of glue logic and software overhead, since the DSP controller already incorporates an on-chip quadrature encoder pulse (QEP) circuit as well as two analog-to-digital converters (ADCs). The QEP circuit provides a glue less interface to TTL-encoders. The two analog-to-digital converters provide the simultaneous sampling of the two sinusoidal output signals of the sin/cos-encoders. The software package includes all functions required for initialization and position interpolation with sin/cos-encoders. All subroutines are ANSI C-compatible and can be called from any C program. The solution has achieved the expected results.