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2023 6th International Symposium on Autonomous Systems (ISAS)最新文献

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Cooperative Passive Location of Multi-UAVs Based on TDOA-DOA Fusion Algorithm 基于TDOA-DOA融合算法的多无人机协同无源定位
Pub Date : 2023-06-23 DOI: 10.1109/ISAS59543.2023.10164550
X. Liu, Ju Jiang, Zhe Zhang
Electronic warfare plays an essential role in modern warfare. In this background, the multiple UAVs cooperative passive positioning technology, which has the advantages of long operating distance and strong concealment, has received significant attention. Considering the scenario of three UAVs attacking enemy surface ships in a naval battle, this paper proposes a collaborative passive localization algorithm based on TDOA and DOA to solve the positioning problem in three-dimensional space. Firstly, we establish a passive location model according to the time delay and measurement errors of the ship target and UAV. Second, the nonlinear terms are linearized using the relative spatial position between the ship and the UAV. Third, a loss function is constructed for the error term, and the least square estimation algorithm obtains the ship coordinate position. Finally, we design two comparative experiments. One discusses the influence of acute angle, isosceles, right angle, equilateral and obtuse angle five UAV spatial structures on positioning accuracy; the other explores the impact of different delay and measurement errors on positioning accuracy. The numerical simulation results effectively verify the model’s rationality and the algorithm’s effectiveness.
电子战在现代战争中起着重要的作用。在此背景下,多无人机协同无源定位技术以其作战距离远、隐蔽性强等优点受到了广泛关注。针对海战中三架无人机攻击敌方水面舰艇的场景,提出了一种基于TDOA和DOA的协同被动定位算法,解决了三维空间中的定位问题。首先,根据舰船目标和无人机的时延和测量误差建立被动定位模型;其次,利用舰船与无人机之间的相对空间位置对非线性项进行线性化处理。第三,对误差项构造损失函数,利用最小二乘估计算法得到船舶坐标位置;最后,我们设计了两个对比实验。讨论了锐角、等腰、直角、等边和钝角五种无人机空间结构对定位精度的影响;二是探讨不同时延和测量误差对定位精度的影响。数值仿真结果有效地验证了模型的合理性和算法的有效性。
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引用次数: 0
Relative navigation method for unmanned aerial vehicles formation using consensus unscented Kalman filter 基于一致无嗅卡尔曼滤波的无人机编队相对导航方法
Pub Date : 2023-06-23 DOI: 10.1109/ISAS59543.2023.10164423
Zhixing Zhuang, Baichun Gong, Xiucai Ding, Mingrui Hao, Linxiu Chen
A relative navigation method in which the measurement information between aircraft only has distance or angle was proposed to achieve accurate relative navigation between aircraft formations in the global navigation satellite system (GNSS) Denied Environment. In addition, four relative measurement schemes are analyzed. An augmented state is introduced in the relative navigation system model, and the observability analysis of the navigation system is carried out relying on the Lie derivative theory, which gives the limitation of motion: the relative position and velocity of the aircraft cannot be parallel or zero, and a single aircraft cannot keep flying straight. A consensus unscented Kalman filter (CUKF) algorithm is established using the geometric characteristics in flight. The observability of the system state is improved after using the additional constraint. Finally, a standard Monte Carlo simulation system is established, and the system simulation is carried out, which shows that the Observability analysis is verified to be correct, and the algorithm demonstrates high accuracy.
为了在全球导航卫星系统(GNSS)拒绝环境下实现飞机编队之间的精确相对导航,提出了一种飞机间测量信息只有距离或角度的相对导航方法。此外,还分析了四种相关的测量方案。在相对导航系统模型中引入增广状态,利用李氏导数理论对导航系统进行可观测性分析,给出了运动的局限性:飞行器的相对位置和速度不能为平行或为零,单个飞行器不能保持直线飞行。利用飞行中的几何特征,建立了一致无气味卡尔曼滤波(CUKF)算法。引入附加约束后,系统状态的可观察性得到了提高。最后,建立了标准蒙特卡罗仿真系统,并进行了系统仿真,验证了可观察性分析的正确性,算法具有较高的精度。
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引用次数: 0
An AC Contactor Remaining Useful Life Prediction Method based on Degradation Event Analysis 基于退化事件分析的交流接触器剩余使用寿命预测方法
Pub Date : 2023-06-23 DOI: 10.1109/ISAS59543.2023.10164499
Yiran Ren, Jianhua Lyu, Mejed Jebali, Baili Zhang
Predicting the remaining useful life of equipment is crucial to ensure safe operations and is widely used in various industries. Data-driven methods for remaining useful life prediction are efficient and scalable, and have garnered significant attention from researchers. However, existing studies often lack comprehensive analysis of equipment degradation data, resulting in low accuracy and reliance on large sample sizes. AC contactors are extensively used in power systems and industrial settings, but their complex structure and operation make traditional maintenance methods impractical. To address these challenges, we propose a novel method for predicting the remaining useful life of AC contactor equipment. Our approach estimates remaining useful life by assessing the impact of degradation events on equipment’s life loss value. By constructing a degradation index, extracting relevant degradation events, matching them to reference events, and estimating remaining useful life, we accurately predict the remaining life of AC contactors. Extensive comparative experiments demonstrate the effectiveness of our proposed method.
预测设备的剩余使用寿命是确保设备安全运行的关键,在各个行业都有广泛的应用。数据驱动的剩余使用寿命预测方法高效且可扩展,已经引起了研究人员的极大关注。然而,现有的研究往往缺乏对设备退化数据的全面分析,导致准确性低,依赖于大样本量。交流接触器广泛应用于电力系统和工业环境中,但其复杂的结构和操作使传统的维护方法难以实现。为了解决这些挑战,我们提出了一种预测交流接触器设备剩余使用寿命的新方法。我们的方法通过评估退化事件对设备寿命损失值的影响来估计剩余使用寿命。通过构建退化指标,提取相关退化事件,将其与参考事件进行匹配,估算剩余使用寿命,准确预测交流接触器的剩余使用寿命。大量的对比实验证明了该方法的有效性。
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引用次数: 0
A blockchain based industrial internet of things enterprise supervision method 一种基于区块链的工业物联网企业监管方法
Pub Date : 2023-06-23 DOI: 10.1109/ISAS59543.2023.10164568
Wang Chang, Weifeng Zhai, Xiangyu Han, Zhou Meng
Aiming at the lack of a feasible and efficient regulatory mechanism between the users, suppliers and the government of smart devices in the context of Industry 4.0, this paper proposes a new regulatory technology for industrial internet of things enterprises based on blockchain technology. Under the Hyperledger Fabric architecture, a big data regulatory system for industrial Internet of Things enterprises is constructed, which can deepen the reform of the data transmission and governance mode among manufacturers and improve the intelligent supervision of the industrial internet of things.
针对工业4.0背景下智能设备用户、供应商和政府之间缺乏可行、高效的监管机制,本文提出了一种基于区块链技术的工业物联网企业监管新技术。在Hyperledger Fabric架构下,构建工业物联网企业大数据监管体系,深化厂商间数据传输和治理模式改革,提升工业物联网智能监管水平。
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引用次数: 0
Distribute consensus control for underactuated AUVs system based on disturbance observer 基于扰动观测器的欠驱动auv系统分布一致控制
Pub Date : 2023-06-23 DOI: 10.1109/ISAS59543.2023.10164551
Haoqian Huang, Ruitong Liu, Yunfei Jin, Mengdie Zhang
The underactuated autonomous underwater vehicles (AUVs) distribute consensus control problem with external disturbances is addressed in this paper. Inspired by previous works, we first reconstruct the underactuated AUV model by choosing the hand position rather than pivot point as the output of system. The new model of underactuated AUV can simplify the controller design, and the tracking errors in three degrees of freedom can be stabilized with two torques easily. Then, a novel fixed-time disturbance observer (DO) which can achieve zero estimation error in the settling time is proposed for each vehicle to determine the external disturbance. Based on the DO, a distributed consensus control for underactuated AUVs is proposed by combining the backstepping and fixed-time techniques. Ultimately, one simulation example is provided to validate the performance of controller.
研究了存在外部干扰的欠驱动自主水下航行器分布一致控制问题。受前人工作的启发,我们首先通过选择手的位置而不是枢轴点作为系统的输出来重建欠驱动AUV模型。该模型简化了欠驱动水下航行器的控制器设计,并且易于用两个力矩稳定三个自由度的跟踪误差。然后,提出了一种新的固定时间干扰观测器(DO),该观测器在每个车辆的沉降时间内可以实现零估计误差,以确定外部干扰。在此基础上,结合回溯和定时技术,提出了欠驱动水下机器人的分布式共识控制方法。最后给出了一个仿真实例来验证控制器的性能。
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引用次数: 0
Fixed-time Terminal Sliding-mode Control for Free-Floating Space Manipulator 自由漂浮空间机械臂的定时终端滑模控制
Pub Date : 2023-06-23 DOI: 10.1109/ISAS59543.2023.10164509
M. Hu, Xuebo Yang, Hanlin Dong, Yimu Jiang
This article focuses on the tracking problem for n-link free-floating space manipulators (FFSM) subject to uncertainties. Based on a non-singular terminal sliding mode, a fixed time controller is well-designed, where the sliding surface is supposed to be reachable and the irrelevance between convergence time and system states’ initial value is proved. Meanwhile, the uncertainties during modeling are well suppressed through the proposed robust control algorithm. At last, the Lyapunov stability theory is adopted to verify the fixed-time convergence of the closed-loop FFSM system. Simulation experiments taking a 6-DOF FFSM validate the effectiveness of the proposed control scheme.
研究了具有不确定性的n-连杆自由浮动空间机械臂的跟踪问题。基于非奇异终端滑模,设计了一种固定时间控制器,假定滑模表面可达,并证明了收敛时间与系统状态初值不相关。同时,所提出的鲁棒控制算法很好地抑制了建模过程中的不确定性。最后,利用Lyapunov稳定性理论验证了闭环FFSM系统的定时收敛性。采用六自由度FFSM进行了仿真实验,验证了所提控制方案的有效性。
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引用次数: 0
Adaptive output feedback control for nonlinear multi-agent systems with actuator failures 具有执行器故障的非线性多智能体系统的自适应输出反馈控制
Pub Date : 2023-06-23 DOI: 10.1109/ISAS59543.2023.10164397
Fei Zhu, Yue Wang, Xiandong Chen
In this paper, the adaptive output feedback control is applied to investigate the global leader-follower consensus problem for a kind of nonlinear multi-agent systems subject to actuator failures. Firstly, introducing the first coordinate transformation to convert the unknown coefficient of the failures about the actuator into the unknown constant Lipschitz conditions of the multi-agent systems. Secondly, using the second coordinate transformation to make the consensus problem of the considered system into a stability problem. Immediately, the concemed system is turned into a system that is easy to find Lyapunov function after the third coordinate transformations. Finally, a series of adaptive output feedback controllers are constructed, which can address the problem of global leader-follower consensus and realize the ability to regulate the following error of each follower’s output signal. Additionally, the simplicity and effectiveness of the presented technique are verified by mathematical simulation results.
本文应用自适应输出反馈控制方法研究了一类非线性多智能体系统在执行器失效情况下的全局leader-follower一致性问题。首先,引入第一次坐标变换,将执行器故障的未知系数转化为多智能体系统的未知常数Lipschitz条件;其次,利用第二次坐标变换将被考虑系统的一致性问题转化为稳定性问题。经过第三次坐标变换后,系统立即变成了一个容易找到李雅普诺夫函数的系统。最后,构造了一系列自适应输出反馈控制器,解决了全局leader-follower共识问题,实现了对每个follower输出信号跟随误差的调节能力。数学仿真结果验证了该方法的简单性和有效性。
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引用次数: 0
Challenges of Autonomous Navigation and Perception Technology for Unmanned Special Vehicles in Underground Mine 地下矿山无人专用车辆自主导航与感知技术的挑战
Pub Date : 2023-06-23 DOI: 10.1109/ISAS59543.2023.10164322
Xiaowei Xu, L. Li, Wenhua Jiao, Qing Zhang
Autonomous navigation and perception technology in underground mine is an important basis for the development of “digital mine”. Traditional vehicle navigation and positioning methods have some problems, such as simple model, poor environmental adaptability and single information source, which cannot meet the requirements of high-precision autonomous navigation index in harsh environment in underground mine. By introducing the development history of navigation technology, this paper summarizes the development background of underground navigation and challenges faced by underground navigation at present. In this paper, the key points and difficulties faced by underground navigation are analyzed. The problems and development trend of underground navigation are discussed in combination with the sensors commonly used in autonomous high-precision navigation.
地下矿山自主导航与感知技术是“数字矿山”发展的重要基础。传统的车辆导航定位方法存在模型简单、环境适应性差、信息源单一等问题,无法满足地下矿山恶劣环境下高精度自主导航指标的要求。本文通过对导航技术发展历史的介绍,总结了地下导航的发展背景和当前地下导航面临的挑战。本文分析了地下导航面临的重点和难点。结合自主高精度导航中常用的传感器,讨论了地下导航存在的问题及发展趋势。
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引用次数: 0
Trajectory Optimization of Two-phase Mars Aerocapture Using the hp-Adaptive Pseudospectral Method 基于hp-自适应伪谱法的两相火星大气捕获轨迹优化
Pub Date : 2023-06-23 DOI: 10.1109/ISAS59543.2023.10164349
Feng Xiangdong, Han Hongwei, Chen Jilin
The research on aerocapture and aeromaneuver for the Mars mission has long been studied due to its fuel advantage. In this paper, a two-phase aerocapture insertion scheme is proposed, which consists of two atmospheric flights and two Kepler orbital flights. On this basis, the optimal control problem of two phases is constructed with the bank angle, the impulse at the apoapsis and the insertion impulse as the control variables. The detailed derivation of the complex interior point constraint and the endpoint constraint is given. After that, the optimization problem is solved using pseudospectral method numerically. Compared with the traditional single-phase aerocapture scheme, it is found that the two-phase aerocapture has lower peaks of heating rate, dynamic pressure, and load factor, which means lower protection cost and fuel consumption cost for Mars mission.
由于其燃料优势,火星任务的航空捕获和航空机动研究一直备受关注。本文提出了一种由两次大气飞行和两次开普勒轨道飞行组成的两阶段大气捕获插入方案。在此基础上,以倾角、顶点冲量和插入冲量为控制变量,构造了两阶段的最优控制问题。给出了复内点约束和端点约束的详细推导。然后,利用伪谱法对优化问题进行了数值求解。与传统的单相气捕方案相比,两相气捕方案具有更低的升温速率、动压和负载系数峰值,这意味着火星任务的保护成本和燃料消耗成本更低。
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引用次数: 0
Weapon Launch Decision-Making of Armed Helicopters Based on Improved RWS-WOA Algorithm 基于改进RWS-WOA算法的武装直升机武器发射决策
Pub Date : 2023-06-23 DOI: 10.1109/ISAS59543.2023.10164293
Zeyu Zhou, Yuhui Wang, Qingxian Wu, Mou Chen, Tongle Zhou
To meet the aiming attack requirement in the high maneuvering flight of armed helicopters, a weapon launch decision-making scheme for armed helicopters is proposed in this paper based on an improved roulette wheel selection whale optimization algorithm (RWS-WOA). The weapon launch decision-making is to obtain the best weapon launch envelope and the best attack point on the guide trajectory. Based on an integrated fire/flight control system and the air-ground combat situation assessment, a priority function of the weapon launch envelope is established. The weapon launch envelope is the prior range on the guide trajectory. Then, according to the requirement of quickness and accuracy, an improved RWS-WOA is introduced, which is efficient to explore potential envelopes and converge to the optimal solution. Finally, the effectiveness of the proposed method is verified by a simulation example.
为满足武装直升机高机动飞行中的瞄准攻击要求,提出了一种基于改进轮盘赌选择鲸优化算法(RWS-WOA)的武装直升机武器发射决策方案。武器发射决策是为了获得最佳的武器发射包线和制导弹道上的最佳攻击点。基于火力/飞行综合控制系统和空地作战态势评估,建立了武器发射包线的优先函数。武器发射包线是制导弹道上的先验范围。然后,根据快速和精确的要求,引入了一种改进的RWS-WOA算法,该算法能够有效地探索潜在包络并收敛到最优解。最后,通过仿真算例验证了所提方法的有效性。
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引用次数: 0
期刊
2023 6th International Symposium on Autonomous Systems (ISAS)
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