无人机编队飞行控制中的气动耦合问题
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摘要
长僚机之间的气动耦合效应是无人机编队飞行中不可忽视的因素,以长僚机的双机编队为例,建立了编队飞行的涡流模型,在有无气动干扰的两种情况下,计算了僚机在编队队形中的气动力,最后设计了考虑气动耦合效应的无人机编队飞行控制系统并进行仿真研究.仿真结果表明气动效应对编队队列中无人机的飞行状态会产生一定影响,该控制系统能很快消除扰动影响,使僚机实现状态的跟踪和保持,达到稳定编队飞行的要求.
Aerodynamic coupling effect is an important issue and cannot be ignored during Unmanned Air Vehicle(UAV)formation flight.Taking the leader-follower formation as an example,the vortex model of formation flight is established.And the flight state of aircraft in formation under two circumstances:With and without aerodynamic coupling effects are researched in detail.The formation control system basing on aerodynamic coupling effects is designed.The simulation results indicate that the aerodynamic coupling have tangible influence on the UAV in formation flight.The formation control system proposed in this paper yields a satisfactory performance,and is able to maintain a stable formation flight under the condition of vortex interactions among the UAVs.The flight control system enables the follow aircraft to track and maintain its flight state so that a stable formation flight can be achieved.
Aerodynamic coupling effect is an important issue and cannot be ignored during Unmanned Air Vehicle(UAV)formation flight.Taking the leader-follower formation as an example,the vortex model of formation flight is established.And the flight state of aircraft in formation under two circumstances:With and without aerodynamic coupling effects are researched in detail.The formation control system basing on aerodynamic coupling effects is designed.The simulation results indicate that the aerodynamic coupling have tangible influence on the UAV in formation flight.The formation control system proposed in this paper yields a satisfactory performance,and is able to maintain a stable formation flight under the condition of vortex interactions among the UAVs.The flight control system enables the follow aircraft to track and maintain its flight state so that a stable formation flight can be achieved.
引文
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[5] ROSS S M,PACHTER M,JACQUES D R,et al.Autonomous aerial refueling based on the tanker reference frame[C].2006IEEE Aerospace Conference.Big Sky,Montana,USA:IEEE:1-22.
[6] NING A,FLANZER T C,KROO I M.Aerodynamic performance of extended formation flight[J].Journal of Aircraft,2011,48(3):855-865.
[7] BENNET D J,MACLNNES C R,SUZUKi M,et al.Autonomous three-dimensional formation flight for a swarm of unmanned aerial vehicles[J].Journal of Guidance,Control,and Dynamics,2011,34(6):1899-1908.
[8]牟勇飚.无人机编队中的气动耦合问题研究[D].西安:西北工业大学,2006.
[2]刘小雄,章卫国,李广文,等.无人机自主编队飞行控制技术问题[J].电光与控制,2006,12(6):28-31.
[3] DARGAN J,PACHTER M,D'AZZO J J.Automatic formation flight control[C].Guidance,Navigation,and Control Conference.Washington,DC,USA:AIAA,1992:838-857.
[4] PACHTER M,D'AZZO J J,PROUD A W.Tight formation flight control[J].Journal of Guidance,Control,and Dynamics,2001,24(2):246-254.
[5] ROSS S M,PACHTER M,JACQUES D R,et al.Autonomous aerial refueling based on the tanker reference frame[C].2006IEEE Aerospace Conference.Big Sky,Montana,USA:IEEE:1-22.
[6] NING A,FLANZER T C,KROO I M.Aerodynamic performance of extended formation flight[J].Journal of Aircraft,2011,48(3):855-865.
[7] BENNET D J,MACLNNES C R,SUZUKi M,et al.Autonomous three-dimensional formation flight for a swarm of unmanned aerial vehicles[J].Journal of Guidance,Control,and Dynamics,2011,34(6):1899-1908.
[8]牟勇飚.无人机编队中的气动耦合问题研究[D].西安:西北工业大学,2006.