摘要
设计了以ARM微处理器为核心的中央控制处理单元,用于无人机真空速测量系统中。通过公式分解,并采用线性低次插值算法,有效解决了真空速解算公式复杂的缺点;同时利用ARM的UART串口总线,实现了传感器输出特性曲线、真空速的上位机实时显示,使系统相对误差控制在2.5%以内。测试结果证明了该系统具有良好的实效性和稳定性、精度高,优于传统的测量装置。
A central control process unit with ARM as its core is designed in order to implement the airspeed measuring sys- tem for the ummanned aerial vchicle. By the formula decomposition, and linear low-interpolation algorithm, an effective solution is made to the shortcomings of the airspeed solution formula for calculating complex. At the same time, taking advantage of the ARM UART serial bus, the sensor output characteristic curve and real airspeed real time showed in host computer are achieved, so that the relative error of measuring system less is within 2.5%. The test results prove that the system has good effctiveness,stability and high accuracy,better than the traditional system.
出处
《电子技术应用》
北大核心
2012年第10期23-25,29,共4页
Application of Electronic Technique
关键词
ARM
指示空速
真空速
压力传感器
线性插值
ARM
indicated airspeed
real airspeed
pressure sensor
linear interpolation
