基于改进狼群算法的多无人机协同多目标分配CSCD

针对现代空战多无人机协同多目标任务分配问题,结合标准狼群算法,提出了一种改进狼群算法的多目标任务分配方法。根据狼群的不同分工以及搜索属性,建立了基于自主游走机制的头狼产生规则、基于多策略知识库的探狼游走机制和基于自适应步长的猛狼奔袭及围攻方式,从而对传统狼群算法的随机性进行智能化约束与控制,以解决多无人机协同多目标任务分配问题。数值仿真结果表明,该方法能够快速有效获得任务分配方案,避免陷入局部最优。     

Cooperative differential games guidance laws for multiple attackers against an active defense target

This paper is concerned with a scenario of multiple attackers trying to intercept a target with active defense. Three types of agents are considered in the guidance: The multiple attackers, the target and the defender, where the attackers aim to pursuit the target from different directions and evade from the defender simultaneously. The guidance engagement is formulated in the framework of a zero-sum two-person differential game between the two opposing teams, such that the measurements on the m...     

Event-triggered and consensus-based attitude tracking alignment for discrete-time multiple spacecraft system exploiting interference

This paper presents a discrete-time attitude control strategy with equi-global practical stabilizability for aligning the attitude of multiple spacecraft to a predesigned configuration according to a time-variant reference. By utilizing the interference of the wireless channel, the communication scheme designed in this paper can save communication resources, amount of computation, and energy proportionally to the number of spacecraft. The exact discrete-time model and approximate discrete-time model of the consensus-based spacecraft tracking system are given. Then the framework for the design of an event-triggered control scheme for the exact discrete-time system via its approximate models is developed, which avoids the periodic actuation, and Zeno behavior is proved to be excluded. Furthermore, the control scheme can handle the presence of the unknown fading channel. Finally, simulation results are presented to demonstrate the effectiveness of the control strategy.     

通信拓扑切换下的预定时间分组协同制导方法

针对通信网络拓扑结构切换下的协同制导问题，提出了一种预定时间协同制导方法(PTCGL),以保证拓扑切换下的预定时间分组收敛。首先，建立三维飞行器协同制导模型和拓扑切换下的分组协同架构：组间利用小组领队飞行器之间的协作实现分组配合，组内则通过有向通信实现组协同。随后，在通信网络拓扑结构切换的情况下，结合牵制控制和预定时间理论，基于M矩阵假设的牵制分组误差和预定时间尺度函数提出拓扑切换三维预定时间协同制导律。进一步，考虑拓扑切换驻留时间，利用Lyapunov理论证明在通信拓扑切换的情况下，该制导律可实现预定时间收敛。最后，数值仿真结果验证了所提出的协同制导方法可实现在拓扑切换下的预定时间收敛、保证分组协同打击。