风洞自由飞多路数据采集与传输系统设计  

Design of aircraft multiplexed data acquisition and transmission system in the wind tunnel

作　　者：赵梓懿 伍春[1] 明宏柯 Zhao Ziyi;Wu Chun;Ming Hongke(Southwest University of Science and Technology,Mianyang 621000,China)

机构地区：[1]西南科技大学,四川绵阳621000

出　　处：《电子技术应用》2023年第6期104-108,共5页Application of Electronic Technique

基　　金：国家自然科学基金(61771410)。

摘　　要：传统风洞自由飞实验通过缩比模型来研究气动参数,随着采集器种类与数量的增加,机载设备结构设计与数据传输控制难度日趋增大。针对这一现状,设计一套基于FPGA逻辑控制与时序驱动的多路数据采集与传输系统。系统采用机载端、地面端、上位机端三端结构,分工明确。机载端采用小型化双层结构化设计来采集舵机角度信号、风向标志信号、IMU惯性测量单元信号、航空姿态信号,地面端负责数据的整合与分发,上位机端进行数据监视与系统控制。经过测试,该系统采集精度达±0.07%FS,数据传输时延低于2.42 ms,符合预期目标。Traditional experiments of free-flight in the wind tunnel use scale models to study aerodynamic parameters,with the increase in the type and number of collectors,the design of airborne equipment structure and control of data transmission are be‐coming more and more difficult.Aiming at this current status,a multi-channel data acquisition and transmission system based on FPGA logic control and timing drive is designed.The system adopts the three-terminal structure of airborne terminal,ground ter‐minal and upper machine terminal,and the division of labor is clear.The airborne terminal adopts a miniaturized two-layer struc‐tured design to acquire the angle signal,wind direction sign signal,Inertial Measurement Unit(IMU)signal,aviation attitude sig‐nal,the ground terminal is responsible for the integration and distribution of data,and the upper computer terminal performs data monitoring and system control.After testing,the acquisition resolution of the system is±0.07%FS(Full Scale)and a data transmis‐sion cycle is less than 2.42 ms,which is in line with the expected target.

关 键 词：自由飞 数据采集 小型化 FPGA 

分 类 号：V211.749[航空宇航科学与技术—航空宇航推进理论与工程] TH6[机械工程—机械制造及自动化]