Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Test development of a UAV equipped with a Fly-By-Wireless flight control system

무선네트워크 비행제어시스템을 탑재한 무인항공기의 시험개발

  • Oh, Hyung Suk (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Kim, Byung Wook (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Lee, Si Hun (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Nho, Won Ho (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Kang, Seung Eun (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Ko, Sang Ho (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
  • Received : 2017.05.18
  • Accepted : 2017.11.20
  • Published : 2017.12.01
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Abstract

This paper presents a test development of a Fly-By-Wireless flight control system for a fixed-wing unmanned aerial vehicle (UAV). Fly-By-Wireless system (FBWLS) refers to a system that uses a wireless network instead of a wired network to connect sensors and actuators with a flight control computer (FCC), reducing considerable amount of wires. FBWLS enables to design a much lighter aircraft along with decreased maintenance time and cost. In this research we developed a Zigbee-based FWBLS UAV in which sensors (GPS and AHRS) are wirelessly connected via a FCC to aileron and elevator servo motors. In order to see the effect of time delay due to wireless signal on the flight stability of the UAV, several flight tests were conducted. From the tests, it was confirmed that the effect is minor by comparing the flight response of the FBWLS with the corresponding Fly-By-Wire system.

본 논문은 무선네트워크를 사용하는 비행제어시스템을 탑재한 고정익 무인항공기의 시험개발에 대해 소개한다. 무선네트워크를 기반으로 하는 항공기는 기존의 방식과 달리 센서와 구동기를 무선으로 연결하여 전선의 무게를 줄여 항공기를 경량화 할 수 있고, 이에 따라 기체 정비비용과 시간을 절약할 수 있다. 본 연구에서 사용된 무인항공기는 AHRS와 GPS, 엘리베이터와 에일러론을 구동하는 서보모터가 ZigBee 통신을 이용하여 FCC에 연결되었다. 또한 무선신호에 의한 지연이 비행안전성에 미치는 영향을 알아보고자 실내 및 비행시험을 수행하였으며, 유선비행제어시스템과의 결과 비교를 통해 이러한 영향은 매우 미미했음을 확인하였다.

Keywords

References

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