论文部分内容阅读
介绍了将正交光栅信号合成近似三角波，再对合成信号进行脉宽调制的细分技术。该方法的细分精度主要决定于原始正交光栅信号的稳定性，一个周期内的非线性误差可由软件修正，整个测量过程的系统误差也可由软件补偿。
The subdivision technique of synthesizing the orthogonal raster signal into approximate triangular wave and then pulse width modulating the synthesized signal is introduced. The subdivision precision of this method mainly depends on the stability of the original orthogonal raster signal. The nonlinear error in one cycle can be corrected by software. The systematic error in the whole measuring process can also be compensated by software.