摘要
该文分析了飞机模拟量采集系统的硬件电路特点,按照误差的特点和性质将其区分为系统误差、随机误差和偶然误差,并分析了误差产生的原因。针对系统误差,消除了通道切换误差,并修正了地线误差;针对随机误差和偶然误差,介绍了3σ准则和Dixon准则,剔除了偶然误差可疑点,采用均值理论消除了随机误差的影响。实验证明,该文提出的误差抑制方法能有效提高飞机模拟量采集系统精度,对提升飞机机电系统控制性能具备重要的现实意义。
According to the characteristics and nature of the error, which is divided into systematic error, random error and random error, this paper analyzes the causes of error and the characteristics of the aircraft hardware circuit analog acquisition system. For systematic errors, a method to eliminate channel switching error and ground error is introduced. For random error and random errors, 3σ and Dixon criteria are introduced to exclude the suspicious point. Using the mean theory, the effect of random errors is eliminated. Experimental results show that the proposed methods can effectively improve the accuracy of the aircraft analog acquisition system and have important practical significance to enhance the performance of the aircraft control electromechanical system.
作者
呼明亮
邓道杰
李兴智
梁哲
HU Ming-liang, DENG Dao-jie, LI Xing-zhi, LIANG Zhe （Xi＇an Aeronautics Computing Technique Research Institute, AV1C, Xi＇an 710065, China）
出处
《电脑知识与技术》
2016年第3期234-236,共3页
Computer Knowledge and Technology
基金
航空科学基金资助项目（2014ZD31006）
