摘 要:针对在原子钟测试测量实验过程中对仪器设备模拟电压信号进行高精度时序控制的需求,提出了一种基于LabVIEW 和NI 高速模拟输出卡的时序控制程序设计方法。以板载高精度采样时钟为基准,设计了可以精确控制模拟电压输出时间的LabVIEW 控制方案,通过将时间控制转换为数据数量控制,实现了支持非线性变化的可定制化时序模拟电压输出,可实现在实验周期内同时对多路输出电压信号时间的任意控制,达到μs 级的输出时间控制精度。
关键词:LabVIEW;高精度;时序控制;可扩展性
中图分类号:TP274 文献标识码:A 文章编号:2096-4706(2020)10-0041-04
Programming Approach of High Precision Sequential ControllingBased on LabVIEW
ZHENG Benchang,REN Jinlei
(Department of Research and Development,China Academy of Launch Vehicle Technology,Beijing 100076,China)
Abstract:In order to meet the demand of high precision timing control for analog voltage signal of instrument and equipment in the process of atomic clock test and measurement experiment,a timing control program design method based on LabVIEW and NI high speed analog output card is proposed. Based on the high-precision sampling clock on board, a LabVIEW control scheme which can precisely control the output time of analog voltage is designed. By converting the time control into the data quantity control,the customized sequential analog voltage output supporting nonlinear change is realized. The time of multi-output voltage signal can be controlled arbitrarily in the experimental period,reaching the output time of μs level The accuracy of control.
Keywords:LabVIEW; high precision;sequential control;scalability
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作者简介:郑本昌(1986—),男,汉族,山东菏泽人,工程师,博士,研究方向:飞行器设计、仪器与测试技术、人工智能技术等。