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        검색결과 5

        1.
        2020.12 구독 인증기관 무료, 개인회원 유료
        4,000원
        3.
        2010.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This paper is concerned with the designing and making small unmanned aerial vehicle robot. In general, Unmanned Aerial Vehicle(UAV) is the aircraft without human pilot and then controlled by computer programs or person in Ground Control Center(GCC). The UAV can be used very widely and effectively in disasters situations, for example, exploration of fires in mountains and salvation of missing peoples in earthquakes. In these essential purposes of UAV, it is very demandable to design and make the commercial model nowadays. So this is the very practical and economical results in designing and making the small UAV robot. The main body of aerial vehicle is studied by inspection of aerodynmic concepts and made as commercial model. All electrical and computer-controlled systems are studied and selected to satisfy the desired functions and specifications of UAV. The results of experimental flights by the newly designed and assembled UAV robot in this paper show the possibilities and practicalities. Finally, the UAV robot of this research proves the possibility of field adaptations in real disastrous situations.
        4,000원
        4.
        2018.12 KCI 등재 서비스 종료(열람 제한)
        In the midst of disaster, such as an earthquake or a nuclear radiation exposure area, there are huge risks to send human crews. Many robotic researchers have studied to send UGVs in order to replace human crews at dangerous environments. So far, two-dimensional camera information has been widely used for teleoperation of UGVs. Recently, three-dimensional information based teleoperations are attempted to compensate the limitations of camera information based teleoperation. In this paper, the 3D map information of indoor and outdoor environments reconstructed in real-time is utilized in the UGV teleoperation. Further, we apply the LTE communication technology to endure the stability of the teleoperation even under the deteriorate environment. The proposed teleoperation system is performed at explosive disposal missions and their feasibilities could be verified through completion of that missions using the UGV with the Explosive Ordnance Disposal (EOD) team of Busan Port Security Corporation.
        5.
        2011.05 KCI 등재 서비스 종료(열람 제한)
        This paper describes efficient flight control algorithms for building a reconfigurable ad-hoc wireless sensor networks between nodes on the ground and airborne nodes mounted on autonomous vehicles to increase the operational range of an aerial robot or the communication connectivity. Two autonomous flight control algorithms based on adaptive gradient climbing approach are developed to steer the aerial vehicles to reach optimal locations for the maximum communication throughputs in the airborne sensor networks. The first autonomous vehicle control algorithm is presented for seeking the source of a scalar signal by directly using the extremum-seeking based forward surge control approach with no position information of the aerial vehicle. The second flight control algorithm is developed with the angular rate command by integrating an adaptive gradient climbing technique which uses an on-line gradient estimator to identify the derivative of a performance cost function. They incorporate the network performance into the feedback path to mitigate interference and noise. A communication propagation model is used to predict the link quality of the communication connectivity between distributed nodes. Simulation study is conducted to evaluate the effectiveness of the proposed reconfigurable airborne wireless networking control algorithms.