基于单片机的无人机真空速测量系统设计  

Design of real-airspeed measuring system in unmanned aerial vehicle based on MCU

作　　者：杨灵芝[1] 严家明[1] 李超[1] 

机构地区：[1]西北工业大学电子信息学院,陕西西安710129

出　　处：《电子设计工程》2012年第6期108-110,共3页Electronic Design Engineering

摘　　要：为了测量无人机真空速,设计了基于单片机的无人机真空速测量系统。根据真空速和动压静压的关系式,采用分段线性插值的算法,测试了0-5 000 m高度的实际真空速值,得到的结果相对误差均不大于4%,能够满足系统精度要求。测试结果表明:该系统具有良好的稳定性,能实时准确地测量出真空速值。In order to measure the real-airspeed of unmanned aerial vehicle （UAV）, the real-airspeed measuring system in unmanned aerial vehicle （UAV） based on MCU are designed. According to the calculating function of real-airspeed, actual real-airspeed between 0 m and 5 000 m is tested with piecewise linear interpolation algorithm. The relative error of results is within 4% and can satisfy the precision requirement of system. The test results show that the system has good stability and can real-time measure real-airspeed with high precision.

关 键 词：单片机 真空速 动压 静压 线性插值 

分 类 号：TP368[自动化与计算机技术—计算机系统结构]