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| 1 | 基于Agent与元胞自动机的无人机集群混合式控制显示文摘高效有序的集群控制方式是集群顺利完成作战任务的前提。针对无人机集群控制问题,结合集中式与分布式2种控制方式,提出基于Agent与元胞自动机的集群混合式控制。从无人机集群作战流程出发构建了无人机集群控制体系框架、通信拓扑结构及集群控制规则,将集群个体由上至下分为中心长机、小组长机、个体无人机3个层次,高层级对低层级采用自上而下的集中式控制,同层级采用自下而上的分布式控制。在此基础上,利用Agent模型的层次性与元胞自动机模型的同质性,设计了基于Agent与元胞自动机的集群混合式控制模型,实现2种控制方式有效结合,元胞自动机模型实现集群基本的聚合、分离、速度一致规则,Agent模型实现不同层级个体间的协同交互规则。在编队集结与保持任务背景下,对分布式、集中式与混合式3种控制进行对比仿真,结果表明:基于混合式控制的集群在编队可控性、跟随性、一致性以及降低通信负载等方面具有明显优势,验证了混合式集群控制方法的有效性。 | 肖宗豪 张鹏 迟文升 刘畅 | 2021 | 北京航空航天大学学报2021，47，11： | 4 |
| 2 | Distributed fuzzy fault-tolerant consensus of leader-follower multi-agent systems with mismatched uncertainties显示文摘In this paper,the distributed fuzzy fault-tolerant tracking consensus problem of leader-follower multi-agent systems(MASs)is studied.The objective system includes actuator faults,mismatched parameter uncertainties,nonlinear functions,and exogenous disturbances under switching communication topologies.To solve this problem,a distributed fuzzy fault-tolerant controller is proposed for each follower by adaptive mechanisms to track the state of the leader.Furthermore,the fuzzy logic system is utilized to approximate the unknown nonlinear dynamics.An error estimator is introduced between the mismatched parameter matrix and the input matrix.Then,a selective adaptive law with relative state information is adopted and applied.When calculating the Lyapunov function’s derivative,the coupling terms related to consensus error and mismatched parameter uncertainties can be eliminated.Finally,a numerical simulation is given to validate the effectiveness of the proposed protocol. | MALIKA Sader WANG Fuyong LIU Zhongxin CHEN Zengqiang | 2021 | Journal of Systems Engineering and Electronics2021，32，5： | 4 |
| 3 | VCR-LFM-BPSK signal design for countering advanced interception technologies显示文摘The hybrid waveform of linear frequency modulation and binary phase shift keying(LFM-BPSK)can take advantages of the LFM and BPSK signals,and reduce the defects of them.However,with the development of interception technology for the LFM-BPSK signal,the application of the signal is limited.In this paper,to improve the anti-interception performance of the hybrid waveform,a new waveform of LFM-BPSK with the varying chirp rate(denoted as VCR-LFM-BPSK)is designed.In this design,based on the working principle of the interception frame for the LFM-BPSK signal,different chirp rates are introduced in different sub-pulses to prevent the signal from being intercepted by the frame.Then,to further improve the anti-interception performance of the VCR-LFM-BPSK signal,the chirp rates are optimized by minimizing the interception capability of the interceptor.Moreover,based on the VCR-LFM-BPSK signal with the optimized chirp rates,the binary phases are designed via a multiobjective Pareto optimization to improve the capabilities of autocorrelation and spectrum.Simulation results demonstrate that the designed VCR-LFM-BPSK signal outperforms the traditional LFM-BPSK signal in countering the advanced interception technologies. | WANG Shanshan LIU Zheng XIE Rong WANG Jingjing | 2021 | Journal of Systems Engineering and Electronics2021，32，2： | 0 |
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