全部文献期刊会议图书|学者科研项目
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作者:Zhixiang Liu , Chi Yuan , Youmin Zhang
来源:[J].Journal of Intelligent & Robotic Systems(IF 0.827), 2017, Vol.88 (2-4), pp.415-436
摘要:By adopting the linear parameter varying (LPV) control technique, this paper presents an active fault-tolerant control (FTC) strategy with application to unmanned quadrotor helicopter (UQH). Adverse effects from payload grasping and dropping caused variations of system dynamics a...
作者:Jared S. Churchwell , Katherine S. Zhang , Joseph H. Saleh
来源:[J].Reliability Engineering and System Safety(IF 1.901), 2018, Vol.180, pp.373-384
摘要:Abstract(#br)The objective of this work is to provide a better understanding of helicopter accidents and to identify important areas for different stakeholders to focus their attention and resources for accident prevention. To this end, we undertook Record Linkage of two federal ...
作者:Ruthvik Chandrasekaran , Alexia P. Payan , Kyle B. Collins ...
来源:[J].Aerospace Science and Technology(IF 0.873), 2020, Vol.98
摘要:... Wires, in particular, are very difficult to discern and easily blend in the background which explains why wire strikes are a major cause of helicopter accidents. In the context of helicopter operations, a wire hazard is any wire or structure supporting those wires that presen...
作者:Xing Fang , Fei Liu , Zhengtao Ding
来源:[J].Journal of the Franklin Institute(IF 2.418), 2018
摘要:Abstract(#br)In this paper, a novel robust control strategy based on disturbance-compensation-gain (DCG) construction approach is proposed for small-scale unmanned helicopters in the presence of high-order mismatched disturbances. The overall control structure consists of two hie...
作者:Yanqing Li , Yimin Xuan
来源:[J].Applied Thermal Engineering(IF 2.127), 2019, Vol.154, pp.458-468
摘要:Abstract(#br)The next generation of helicopters is facing more challenging demands in both performance and thermal loads, which affect the efficiency of the propulsion system and the reliability of subsystems. In order to manage and deploy the heat and energy of the whole helicopter...
作者:L. Zhou , F. Duan , D. Mba ...
来源:[J].Engineering Failure Analysis(IF 0.855), 2018, Vol.92, pp.71-83
摘要:Abstract(#br)Condition monitoring for helicopters has always been one of the most critical technologies to guarantee the integrity of the rotorcrafts, enhance operational and personnel safety, and reduce the overall maintenance costs. Over the past decades, health and usage monit...
作者:Santiago-Omar Caballero-Morales , Jose-Luis Martinez-Flores
来源:[J].Computers & Industrial Engineering(IF 1.516), 2020, Vol.139
摘要:... Although for these facilities helicopters have been considered as the most appropriate transportation vehicles due to their speed, reliability and accessibility, they also involve risks which can lead to fatalities. Within this context, the present work is focused on the...
作者:Yanqing Li , Yimin Xuan
来源:[J].International Journal of Heat and Mass Transfer(IF 2.315), 2017, Vol.115, pp.102-114
摘要:Abstract(#br)Although the temperature distributions and infrared characteristics on the helicopter fuselage and in the exhaust plume have been great investigated in previous literatures, most of them are only in hover condition. In order to extend these models to any flight condi...
作者:Xiangyu Wang , Xin Yu , Shihua Li ...
来源:[J].Aerospace Science and Technology(IF 0.873), 2018
摘要:Abstract(#br)In this paper, the position and yaw angle trajectory tracking control problem is studied for unmanned helicopters subject to both matched and mismatched disturbances. To achieve the trajectory tracking goal, a feedforward-feedback composite control scheme is proposed...
作者:Ye Yuan , Renliang Chen , Pan Li
来源:[J].Aerospace Science and Technology(IF 0.873), 2018
摘要:Abstract(#br)The coaxial rigid rotor helicopter has been proposed as a future high-performance rotorcraft concept. However, the aerodynamic interference of this helicopter is complicated because it couples with the unique flapping feature of the rigid rotor, which further alters ...

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