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Reinforcement learning-based missile terminal guidance of maneuvering targets with decoys

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Chinese Journal of Aeronautics 2023年第12期36卷 309-324页

作者： Tianbo DENG Hao HUANG yangwang fang Jie YAN Haoyu CHENG School of Astronautics Northwestern Polytechnical UniversityXi’an 710072China Unmanned System Research Institute Northwestern Polytechnical UniversityXi’an 710072China

In this paper,a missile terminal guidance law based on a new Deep Deterministic Policy Gradient(DDPG)algorithm is proposed to intercept a maneuvering target equipped with an infrared ***,to deal with the issue that the missile cannot accurately distinguish the target from the decoy,the energy center method is employed to obtain the equivalent energy center(called virtual target)of the target and decoy,and the model for the missile and the virtual decoy is ***,an improved DDPG algorithm is proposed based on a trusted-search strategy,which significantly increases the train efficiency of the previous DDPG ***,combining the established model,the network obtained by the improved DDPG algorithm and the reward function,an intelligent missile terminal guidance scheme is ***,a heuristic reward function is designed for training and learning in combat ***,the effectiveness and robustness of the proposed guidance law are verified by Monte Carlo tests,and the simulation results obtained by the proposed scheme and other methods are compared to further demonstrate its superior performance.

关键词： Deep deterministic policy gradient Infrared decoy Maneuvering target Reinforcement learning Terminal guidance law

An Adaptive Weighted Differential Game Guidance Law

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Chinese Journal of Aeronautics 2012年第5期25卷 739-746页

作者： ZHANG Ping fang yangwang ZHANG Fengming XIAO Bingsong HU Shiguo ZONG Shuning College of Aeronautics and Astronautics Engineering Air Force Engineering UniversityXi'an 710038China

For intercepting modern high maneuverable targets, a novel adaptive weighted differential game guidance law based on the game theory of mixed strategy is proposed, combining two guidance laws which are derived from the perfect and imperfect in- formation pattern, respectively. The weights vary according to the estimated error of the target＇s acceleration, the guidance law is generated by directly using the estimation of target＇s acceleration when the estimated error is small, and a differential game guidance law with adaptive penalty coefficient is implemented when the estimated error is large. The adaptive penalty coeffi- cients are not constants and they can be adjusted with current target maneuverability. The superior homing performance of the new guidance law is verified by computer simulations.

关键词： differential games guidance laws adaptive weight penalty coefficient information patterns game theory

Cooperative optimal mid-course guidance laws with parameter optimization

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Cooperative optimal mid-course guidance laws with parameter ...

第三十九届中国控制会议

作者： Zihao Wu yangwang fang Wenxing Fu Collage of Aerospace Northwestern Polytechnical University Collage of Unmanned Systems Technology Northwestern Polytechnical University

At present, there is no clear way to select the cooperative term coefficients in the cooperative guidance law based on the biased proportional guidance architecture, which is not conducive to project implementation. In this paper, considering the group cost function, an optimization method is proposed to solve the cooperative term coefficients of a cooperative guidance ***, the structure of cooperative mid-course guidance is introduced in three-dimensional inertial coordinate system. Secondly, the optimization method of the cooperative term coefficient is given and analyzed. Finally, numerical simulation results are given to illustrate the effectiveness of the proposed optimization method.

关键词： Cooperative mid-course guidance laws parameter optimization maneuvering target

UAV Path Planning Based on Shuffled Frog-Leaping Algorithm and Dubins Path

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UAV Path Planning Based on Shuffled Frog-Leaping Algorithm a...

第三十九届中国控制会议

作者： Xinfang Li yangwang fang Wenxing Fu Northwestern Polytechnical University

In this paper, a novel path planning algorithm for the fixed-wing UAV based on shuffled frog-leaping algorithm（SFLA） and Dubins path is proposed. First, the Dubins path planning is transformed into a discrete combinatorial optimization problem. Then the SFLA is used to search the optimal Dubins path, so that the generated flight path directly satisfies the minimum turning radius constraint of UAV. In order to perfectly combine the SFLA and the Dubins path, a novel coding method and the worst frog update strategy are presented. Finally, the simulation results prove that the algorithm is effective for path planning of single UAV and multiple UAVs.

关键词： path planning Dubins path shuffled frog-leaping algorithm obstacle avoidance

基于广义频率响应函数矩阵的非线性闭环控制系统的稳定性研究(英文)

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控制理论与应用 1999年第6期16卷 916-920页

作者：方洋旺韩崇昭西安交通大学系统工程研究所西安710049

本文基于广义频率响应函数矩阵表示，针对一类多输入多输出非线性系统，提出了直接利用开环稳定性来判断系统闭环稳定性的新方法。

关键词：频率响应非线性控制系统闭环控制系统稳定性

SISO非线性系统H_∞控制:Volterra级数法

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控制理论与应用 2000年第4期17卷 561-564页

作者：方洋旺韩崇昭西安交通大学系统工程研究所西安710049

首先基于Volterra级数理论 ,将一般的SISO离散系统非线性算子表示为n阶Volterra线性算子级数 .其次 ,将线性系统H∞ 控制的插值理论与斜Toeplitz优化算法应用到每阶Volterra线性算子中 ,并利用算子论中交换提升理论的结果 ,求出相应的n... 详细信息

首先基于Volterra级数理论 ,将一般的SISO离散系统非线性算子表示为n阶Volterra线性算子级数 .其次 ,将线性系统H∞ 控制的插值理论与斜Toeplitz优化算法应用到每阶Volterra线性算子中 ,并利用算子论中交换提升理论的结果 ,求出相应的n阶Volterra算子的最优补偿参数 ,这些最优补偿参数的级数是局部稳定的非线性算子 .通过此算子即求出最优H∞ 控制器 .最后给出具体设计步骤 ,并进行了仿真研究 .

关键词：非线性系统 SISO系统 H∞控制 Volterra级数法

非线性随机跳变摄动系统的鲁棒H_∞全阶观测器

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西安电子科技大学学报 2013年第3期40卷 57-65页

作者：陈佳方洋旺楼顺天西安电子科技大学电子工程学院陕西西安710071 空军工程大学工程学院陕西西安710038

讨论了一类非线性随机跳变摄动系统鲁棒H∞全阶观测器的设计问题.根据李雅普诺夫稳定性理论,对于观测方程带有Lipschitz非线性项的随机跳变摄动系统,给出了非线性系统的随机稳定判别矩阵,并在此基础上设计了估计误差具有鲁棒H∞镇定性... 详细信息

讨论了一类非线性随机跳变摄动系统鲁棒H∞全阶观测器的设计问题.根据李雅普诺夫稳定性理论,对于观测方程带有Lipschitz非线性项的随机跳变摄动系统,给出了非线性系统的随机稳定判别矩阵,并在此基础上设计了估计误差具有鲁棒H∞镇定性能的线性全阶观测器,推导了观测器增益的计算方法.与奇异系统不同的是,文中所给出的方法着重考虑了未忽略小时间参数时对估计误差的影响,并在此基础上计算了允许估计误差满足鲁棒H∞镇定性能的小时间参数上界.

关键词：随机系统非线性系统利普希茨条件奇异摄动系统线性观测器鲁棒H∞性能

Distributed Array Planning Method with Layered Constraint in Multi-UAV Formation with Bearing-only Detection

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Distributed Array Planning Method with Layered Constraint in...

第43届中国控制会议

作者： Zhan Chen Wenxing Fu Ruitao Zhang Bowen Ye yangwang fang Unmanned Systems Research Institute Northwestern Polytechnical University

Multi-UAV formations for bearing-only detection are increasingly important in modern military confrontations, and the geometric array of the formation is one of the decisive factors affecting the detection accuracy of the system. This paper proposed the distributed stochastic subgradient projection algorithm(DSSPA) with layered constraint to solve this ***, the system model for cooperative positioning of UAV formation using bearing-only detection method was *** based on the constraints of safe flight altitude and fixed baseline, the UAV formation is layered. Then, the proposed DSSPA combines the idea of stochastic subgradient descent and the projection method, making it more suitable for processing the objective function including non-smooth and convex optimization parts. Simultaneously, by applying the projection operation on each feasible solution, it can ensure that the constraints of the problem are met when updating parameters. Finally, simulation experiment was set up to verify the effectiveness and superiority of the proposed distributed method in array planning of UAV formations with bearing-only detection.

关键词： UAV formation layered constraint Distributed Stochastic Algorithm Geometry Dilution of Precision

Prescribed-time Group Consensus Cooperative Guidance

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Prescribed-time Group Consensus Cooperative Guidance

第40届中国控制会议

作者： Wenhui Ma yangwang fang Zhikai Wang Wenxing Fu Xiaogeng Liang School of Automation Northwestern Polytechnical University Unmanned System Research Institute Northwestern Polytechnical University School of Astronautics Northwestern Polytechnical University

In this paper,a prescribed-time group consensus cooperative guidance law（PTGCCGL） is proposed based on the prescribed-time control *** from the tradition cooperation against single target,the group cooperative guidance shows its potential in intercepting multiple *** the group cooperative attack,the formation is classified into subgroups which attack their own targets ***,prescribed-time group consensus based on the time-scaling function is proved by Lyapunov stability ***,the PTGCCGL is proposed for cluster cooperation to achieve the simultaneous attack of same subgroup while keep the communication between ***,a numerical example is presented to show the effectiveness of the proposed cooperative guidance law.

关键词： Prescribed-time convergence group consensus multiple flight vehicles cooperative guidance