火箭飞行时串测试误差分析研究  

Research on the Test Error of Flying Time Sequence of Launch Vehicle

作　　者：曹梦磊 张义超 南京宏 陈益 Cao Menglei;Zhang Yichao;Nan Jinghong;Chen Yi(Beijing Institute of Astronautical Systems Engineering,Beijing 100076,China)

机构地区：[1]北京宇航系统工程研究所,北京100076

出　　处：《计算机测量与控制》2021年第6期19-24,共6页Computer Measurement &Control

摘　　要：火箭飞行时串是按照时间序列输出的一系列指令参数,对其输出精度的测量是判断火箭正常飞行的重要依据;针对运载火箭飞行时串输出链路复杂,测试判读途径多的特点,首先分析了火箭飞行时串输出的原理,然后针对地测时串和遥测时串两种测试判读方法分析了时串测试误差的来源,地测时串误差主要来源于控制系统软件周期和时序线路延时;遥测时串误差主要来源于遥测采样编码误差和起飞信号接收误差;最后通过运载火箭某次任务出厂测试和飞行数据验证了对测试误差分析的正确性,并给出提高火箭飞行时串输出精度,减少测试误差的几种途径。Flying time sequence of launch vehicle is a series of instruction parameters output.The measurement of its output precision is an important basis to judge the flight of rocket.In view of output link of launch vehicle's flying time sequence is complex and test interpretation is various,the principle of output flying time sequence is characterized firstly.Then according to the method of ground test and remote test of the time sequence,the source of test error from the whole link is analyzed.The source of ground test error is mainly from software cycle.While the source of remote test error is mainly from coding and sampling error,and the receiving error of take-off signal.Lastly,through the test data from one task of some rocket,the analysis of the test error is verified.Several approaches of improving the level of time sequence output precision and reducing the test error is put away.

关 键 词：运载火箭 飞行时串 测试误差 测试判读 全链路 

分 类 号：TP206[自动化与计算机技术—检测技术与自动化装置]