CAJ | 학술논문

在圆光栅作为分度基准的高精度测量仪器中，测量信号的稳定性直接影响到最终的测量精度。针对实际光栅信号不稳定性产生直流电平漂移的情况，在电子细分的基础上，采用了A/D和D/A转换器实时校正直流电平的方法，解决了实际光栅信号的直流电平漂移影响处理器计数的问题，降低了测量误差。此方法主要由软件编程来实现，硬件电路设计简单，电路的复杂程度低，有利于提高测量精度。
재원광책작위분도기준적고정도측량의기중，측량신호적은정성직접영향도최종적측량정도。침대실제광책신호불은정성산생직류전평표이적정황，재전자세분적기출상，채용료A/D화D/A전환기실시교정직류전평적방법，해결료실제광책신호적직류전평표이영향처리기계수적문제，강저료측량오차。차방법주요유연건편정래실현，경건전로설계간단，전로적복잡정도저，유리우제고측량정도。
In high-accuracy survey instrument which uses the radial grating as the graduation reference,the stability of the measuring signal affects the final measurement accuracy directly. According to DC level drift caused by the instability of actual grating signal,and on the basis of electronics division,the method of real-time correcting the DC level using A/D and D/A con-verter is adopted,which solves the problem of the processor count affected by the DC level drift of actual grating signal,and re-duces the measuring error. This method is mainly implemented by software programming. The hardware circuit is very simple, and the circuit complexity is low,which is beneficial to improve the measurement accuracy.