基于单片机的无人机真空速测量系统设计

摘要

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.%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0-5000m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。