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A Hybrid Approach for Navigation of a Solar-powered UAV in a Dynamic Urban Environment 在动态城市环境中为太阳能无人机导航的混合方法
Pub Date : 2024-02-01 DOI: 10.1109/ANZCC59813.2024.10432806
Siyuan Li, Jingwen Wei
This paper considers a scenario in which a solar-powered UAV travels in a dynamic urban environment with unknown static and moving obstacles. A framework is proposed, including a three-phase hybrid approach for this problem. Firstly, an energy-aware path planning algorithm is proposed based on the limited information of the environment. Secondly, a pure pursuit controller is applied to follow the pre-generated online path. Finally, an energy-aware reactive obstacle avoidance algorithm is used to avoid collision with unknown obstacles. The effectiveness of the proposed framework is verified based on computer simulation.
本文考虑了太阳能无人机在动态城市环境中飞行的情景,该环境中存在未知的静态和移动障碍物。本文提出了一个框架,包括针对该问题的三阶段混合方法。首先,基于有限的环境信息,提出了一种能量感知路径规划算法。其次,应用纯追逐控制器来遵循预先生成的在线路径。最后,使用能量感知的反应式避障算法来避免与未知障碍物发生碰撞。计算机模拟验证了所提框架的有效性。
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引用次数: 0
Suppression of Adverse Effects of Transmission Clearance in Brushless DC Motor Servo Systems by Switching Compensation* 通过开关补偿抑制无刷直流电机伺服系统中传动间隙的不良影响*
Pub Date : 2024-02-01 DOI: 10.1109/ANZCC59813.2024.10432923
Dao Zhou, Yunlong Yang, Xiongjun Wu, Biao Liu
In conventional servo system with transmission mechanisms, the transmission backlash seems to be an inevitable phenomenon in many applications. Excessive backlash can lead to relative motion between the servo motor and the load, resulting in response delays, instability, and oscillations, consequently causing a decline in the dynamic performance of the system. To mitigate the negative effects of transmission backlash, this paper proposes a model-based backstepping adaptive control algorithm and a switching compensation approach tailored to transmission backlash. A feed-forward control gap compensation method is suggested. Leveraging identified servo system parameter information, this method achieves compensation and suppression of the nonlinearity caused by backlash. The efficacy of the proposed method is verified through theoretical analysis and simulation experiments, which also guaranteed its capability to effectively enhance the tracking accuracy and stability of the servo system while suppressing undesirable phenomena caused by backlash.
在带有传动机构的传统伺服系统中,传动反向间隙似乎是许多应用中不可避免的现象。过大的反向间隙会导致伺服电机和负载之间产生相对运动,从而引起响应延迟、不稳定和振荡,进而导致系统动态性能下降。为减轻传动反向间隙的负面影响,本文提出了一种基于模型的反向步进自适应控制算法和一种针对传动反向间隙的开关补偿方法。还提出了一种前馈控制间隙补偿方法。利用已识别的伺服系统参数信息,该方法实现了对反向间隙引起的非线性的补偿和抑制。通过理论分析和仿真实验,验证了所提方法的有效性,也保证了其在抑制反向间隙引起的不良现象的同时,有效提高伺服系统的跟踪精度和稳定性的能力。
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引用次数: 0
Easy Planting with Distributed Cellular Plant Factory* 利用分布式蜂窝植物工厂*轻松种植
Pub Date : 2024-02-01 DOI: 10.1109/ANZCC59813.2024.10432816
Jing Hua, Xiujuan Wang, Haoyu Wang, Xingyuan Dai, Weikang Zhao, Mengzhen Kang
This article presents an innovative modular planting plant factory inspired by lean manufacturing principle, where planting cells work in a distributed way, coordinated by cloud service. Each planting cell is equipped with controllable light source, CO2 supplement and fans. All cells are remotely and locally controllable, including instructions on environmental adjustment and planting task scheduling. This system offers flexibility, scalability, and autonomous management of plant factories. Preliminary results indicate its potential in precision agriculture. The modular system adapts to diverse scenarios, focusing on robustness in smart factories and user-friendliness. It envisions urban cultivation as a social platform and aligns with emerging trends in cyber-physical social systems (CPSS) and Distributed Autonomous Organization (DAO). This work represents a convergence of technology, adaptability, and a vision for interactive urban agriculture.
本文介绍了一种创新的模块化种植工厂,其灵感来自精益生产原则,种植单元以分布式方式工作,由云服务协调。每个种植单元都配有可控光源、二氧化碳补充剂和风扇。所有单元均可进行远程和本地控制,包括环境调整和种植任务调度指令。该系统具有灵活性、可扩展性和植物工厂自主管理功能。初步结果表明,它在精准农业方面具有潜力。该模块化系统可适应不同的应用场景,注重智能工厂的稳健性和用户友好性。它将城市种植视为一个社交平台,并与网络物理社交系统(CPSS)和分布式自治组织(DAO)的新兴趋势保持一致。这项工作代表了技术、适应性和交互式城市农业愿景的融合。
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引用次数: 0
Energy-Efficient Off-Road Navigation of an Unmanned Mining Truck on a Rough Terrain 无人采矿车在崎岖地形上的节能越野导航
Pub Date : 2024-02-01 DOI: 10.1109/ANZCC59813.2024.10432796
A. Savkin, S. Verma, Siyuan Li
This paper presents a solution to the complex challenge of optimizing the navigation of unmanned mining trucks across challenging terrain. The primary goal is to minimize fuel consumption while ensuring safety by avoiding designated hazard zones. The developed algorithm efficiently calculates an optimal path for the truck by considering both the terrain’s geometric characteristics and safety constraints. Importantly, this research rigorously proves the global optimality of the proposed navigation algorithm. Our work contributes to enhancing the efficiency and safety of autonomous mining operations.
本文针对优化无人采矿卡车在充满挑战的地形中的导航这一复杂难题提出了一种解决方案。主要目标是最大限度地降低油耗,同时避开指定的危险区域,确保安全。所开发的算法通过同时考虑地形的几何特征和安全限制,有效地计算出卡车的最优路径。重要的是,这项研究严格证明了所提导航算法的全局最优性。我们的工作有助于提高自主采矿作业的效率和安全性。
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引用次数: 0
Reinforcement Learning for Exploration vs. Exploitation Problems in Medical Exercise Sessions 医学练习课程中探索与开发问题的强化学习
Pub Date : 2024-02-01 DOI: 10.1109/ANZCC59813.2024.10432847
Roxanne R. Jackson, Damiano Varagnolo, S. Knorn
Biofeedback in gamified medical exercise sessions has proven to be an effective technique for adapting patient behaviours to improve health outcomes. In this paper, we formulate a method for designing optimal training sessions with two conflicting goals: maximising the desired exercise effect and sufficiently exciting the system for identification in order to update the personalised patient model. We exploit the flexibility of model-free reinforcement learning to obtain an optimal controller, which is robust to uncertainty in the system parameters. We compare the controller from reinforcement learning to a standard dual control formulation in simulation on an illustrative case study of building pelvic floor muscular strength and tone while performing Kegel exercises. The results indicate that the reinforcement learning method attains a better exercise effect while improving the parameter estimates compared to a standard dual controller. However, due to the trial-and-error nature of reinforcement learning, this comes at the expense of computational time.
事实证明,游戏化医疗锻炼课程中的生物反馈是调整患者行为以改善健康状况的有效技术。在本文中,我们提出了一种设计最佳训练课程的方法,该方法具有两个相互冲突的目标:最大化预期锻炼效果和充分激发系统识别以更新个性化患者模型。我们利用无模型强化学习的灵活性获得了最佳控制器,该控制器对系统参数的不确定性具有鲁棒性。我们将强化学习的控制器与标准的双重控制配方进行了模拟比较,案例研究是在进行凯格尔运动时增强盆底肌肉的力量和张力。结果表明,与标准双控制器相比,强化学习方法在改善参数估计的同时,还能达到更好的锻炼效果。然而,由于强化学习的试错性质,这需要以牺牲计算时间为代价。
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引用次数: 0
Achieving Interactive Shooting Training: Mathematical Modeling of Gun-launched Missile Ballistic Trajectories in LVC Architecture 实现交互式射击训练:LVC 架构中的枪射导弹弹道数学建模
Pub Date : 2024-02-01 DOI: 10.1109/ANZCC59813.2024.10432825
Dongqing Li, Yin Zhu, Yuanwu Zhu, Xinyu Wu, Hongmei Zhang, Yuan Liu
Gun-launched missiles play a significant role in land battlefields. However, simulating its physical properties realistically within training environments remains a persistent challenge, particularly when it comes to replicating the dynamic characteristics between virtual and real interactions. To address this challenge, we propose an extensive framework of theoretical methods aimed at achieving precision strikes on arbitrary moving targets in three-dimensional space based on the three-point method. Firstly, we establish the external ballistic kinematics and dynamics equations of the gun-launched missile. Then, we conduct the overall structural design and three-dimensional modeling of the missile, taking the ‘9K120’ gun-launched missile as the reference model. Next, we compute the aerodynamic coefficients and the aerodynamic moment coefficients of the gun-launched missile. Finally, we establish a simulation model of the gun-launched missile and analyze the curves of the external ballistic trajectory and flight attitude change over time when the missile strikes the target, and we finish mathematical modeling of gun-launched missile ballistic trajectories in LVC architecture. The results demonstrate that our theoretical method effectively solves the simulation modeling problem of the gun-launched missile in the simulation training environment, enabling accurate strikes on moving targets in three-dimensional space and achieving interactive shooting training.
炮射导弹在陆地战场上发挥着重要作用。然而,在训练环境中逼真地模拟其物理特性仍然是一个长期存在的挑战,特别是在复制虚拟和真实互动之间的动态特性时。为了应对这一挑战,我们提出了一个广泛的理论方法框架,旨在基于三点法实现对三维空间中任意移动目标的精确打击。首先,我们建立了炮射导弹的外部弹道运动学和动力学方程。然后,以 "9K120 "炮射导弹为参考模型,进行导弹的总体结构设计和三维建模。接着,计算炮射导弹的气动系数和气动力矩系数。最后,我们建立了炮射导弹的仿真模型,分析了导弹打击目标时的外弹道和飞行姿态随时间变化的曲线,完成了 LVC 架构下炮射导弹弹道的数学建模。结果表明,我们的理论方法有效解决了仿真训练环境下炮射导弹的仿真建模问题,实现了对三维空间运动目标的精确打击,达到了交互式射击训练的目的。
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引用次数: 0
Energy Management in Community Microgrid—A Techno-economic Study Framework 社区微电网中的能源管理--技术经济研究框架
Pub Date : 2024-02-01 DOI: 10.1109/ANZCC59813.2024.10432921
Moslem Uddin, Huadong Mo, Daoyi Dong, S. Elsawah
This study proposes an energy management framework for community microgrids to produce energy at a reduced cost with high reliability. The techno-economic benefits of the proposed solution are also investigated. A regional community with solar and wind energies is considered as a case study. The test microgrid consists of solar photovoltaic, wind turbines, a diesel generator, battery storage, and grid connection capability. Simple performance metrics are used to assess the performance of the proposed energy management framework. Finally, results are compared with and without energy management implementation. Results show that the proposed framework reduces electricity costs by up to 18.50% compared to a baseline method. Reliability analysis reveals that the proposed methods ensure continuous power supply even during grid outages. This study also finds that the proposed energy management technique reduces fuel consumption by approximately 90.25%. This work can be valuable in identifying effective solutions for supplying reliable and cost-effective power to regional and remote areas.
本研究为社区微电网提出了一个能源管理框架,以便以较低的成本和较高的可靠性生产能源。研究还探讨了拟议解决方案的技术经济效益。研究以一个拥有太阳能和风能的地区社区为案例。测试微电网由太阳能光伏发电、风力涡轮机、柴油发电机、蓄电池和电网连接功能组成。使用简单的性能指标来评估所提出的能源管理框架的性能。最后,比较了实施和未实施能源管理的结果。结果表明,与基线方法相比,建议的框架最多可降低 18.50% 的电费。可靠性分析表明,即使在电网中断时,建议的方法也能确保持续供电。这项研究还发现,建议的能源管理技术可减少约 90.25% 的燃料消耗。这项工作对于确定有效的解决方案,为区域和偏远地区提供可靠且经济高效的电力非常有价值。
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引用次数: 0
Fuzzy Based Steering Control of a Multi-Joint AUV 基于模糊技术的多关节 AUV 转向控制
Pub Date : 2024-02-01 DOI: 10.1109/ANZCC59813.2024.10432831
Omar Zakary, Ke-Xian Liu, Chao Ren, Qing-Hao Meng
The multi-joint structure of our Autonomous Underwater Vehicle (AUV) enhances its maneuverability, allowing it to navigate in the underwater environment with greater flexibility. However, this added maneuverability poses challenges to the steering process. When the multi-joint AUV (MJ-AUV) performs steering maneuvers, its joints undergo rotation, leading to a change in the orientation of the cabins with respect to the overall forward heading of the vehicle. As a result, this change in orientation affects the values of the hydrodynamic reactions, including Coriolis and damping, experienced by the cabins. The dynamic interaction between the joints' rotation and the resulting change in hydrodynamic forces significantly impacts the steering performance and stability of the MJ-AUV. Understanding and addressing these effects are crucial for the development of effective control strategies that ensure precise and reliable steering in various underwater environments. Overcoming the difficulties posed by joint rotation during steering can lead to advancements in MJ-AUV navigation and expand their potential applications in complex underwater missions. This research proposes a fuzzy-based control with sliding mode control (SMC) approach for the steering of an MJAUV. The developed fuzzy-based SMC control algorithm is validated through extensive MATLAB simulations. The results demonstrate improved tracking performance and robustness in comparison to the SMC control method. Moreover, the proposed approach shows superior trajectory tracking accuracy while mitigating undesired chattering effects associated with standard SMC techniques.
自主潜水器(AUV)的多关节结构增强了其机动性,使其能够在水下环境中更加灵活地航行。然而,这种额外的机动性给转向过程带来了挑战。当多关节 AUV(MJ-AUV)执行转向操作时,其关节会发生旋转,从而导致舱室相对于飞行器整体前进方向的方向发生变化。因此,方向的改变会影响舱室所经历的流体动力反作用力值,包括科里奥利和阻尼。关节旋转与由此产生的流体动力变化之间的动态相互作用对 MJ-AUV 的转向性能和稳定性产生了重大影响。了解和解决这些影响对于开发有效的控制策略,确保在各种水下环境中进行精确可靠的转向至关重要。克服转向过程中关节旋转带来的困难,可推动 MJ-AUV 导航技术的进步,并扩大其在复杂水下任务中的潜在应用。本研究提出了一种基于模糊控制的滑模控制(SMC)方法,用于 MJAUV 的转向。通过大量的 MATLAB 仿真验证了所开发的基于模糊的 SMC 控制算法。结果表明,与 SMC 控制方法相比,跟踪性能和鲁棒性都有所提高。此外,所提出的方法还显示出卓越的轨迹跟踪精度,同时减轻了与标准 SMC 技术相关的不希望出现的颤振效应。
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引用次数: 0
Trust-Based Distributed Entropy Filtering for State-Saturated Nonlinear Systems with Hybrid Cyber-Attacks and Non-Gaussian Noises 针对混合网络攻击和非高斯噪声的状态饱和非线性系统的基于信任的分布式熵滤波技术
Pub Date : 2024-02-01 DOI: 10.1109/ANZCC59813.2024.10432849
Haifang Song, Derui Ding, Qing-Long Han, Xiaohua Ge
This article proposes a novel trust-based entropy filter in distributed form for state-saturated nonlinear systems with hybrid cyber-attacks, including denial-of-service and deception attacks. A simple clustering method is employed to categorize the data received from neighboring nodes into two clusters: the trusted cluster and the untrusted cluster. By optimizing a joint cost function involving weighted least squares and a generalized maximum correntropy criterion, a two-step filter is designed in a distributed form, wherein the untrusted data from the neighbors is compensated to relieve the impact from malicious attacks. The significance of the designed algorithm is verified by conducting a target-tracking experiment at the end.
本文提出了一种新颖的基于信任的分布式熵滤波器,适用于具有混合网络攻击(包括拒绝服务和欺骗攻击)的状态饱和非线性系统。本文采用一种简单的聚类方法,将从相邻节点接收到的数据分为两个簇:信任簇和不信任簇。通过优化涉及加权最小二乘法和广义最大熵准则的联合成本函数,设计了一种分布式的两步滤波器,对来自邻居的不可信数据进行补偿,以减轻恶意攻击的影响。最后通过目标跟踪实验验证了所设计算法的重要性。
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引用次数: 0
A Knowledge Distillation Network Combining Adversarial Training and Intermediate Feature Extraction for Lane Line Detection 结合对抗训练和中间特征提取的知识蒸馏网络用于车道线检测
Pub Date : 2024-02-01 DOI: 10.1109/ANZCC59813.2024.10432872
Fenghua Zhu, Yuanyuan Chen
Lane line detection is an important input of the automatic driving system and the assisted driving system. It is deployed on the vehicle end, with limited resources and high requirements for real-time performance and detection accuracy. We explore a new knowledge distillation method for lane line detection, in which the student network can acquire knowledge not only from the output features of the teacher network but also from the intermediate process of the teacher network. The knowledge distillation in the intermediate process named important feature correlations distillation compares the correlation between the feature maps of the teacher network and the student network. The knowledge distillation of the output results named semantic consistency distillation allows the student network to learn the output feature knowledge of the teacher network by integrating confrontation training into the knowledge distillation method. Experimental results demonstrate that our knowledge distillation method works well and light models can benefit from the distillation method.
车道线检测是自动驾驶系统和辅助驾驶系统的重要输入。它部署在车辆端,资源有限,对实时性和检测精度要求很高。我们探索了一种新的车道线检测知识提炼方法,其中学生网络不仅可以从教师网络的输出特性中获取知识,还可以从教师网络的中间过程中获取知识。中间过程中的知识提炼被命名为重要特征相关性提炼,它比较了教师网络和学生网络的特征图之间的相关性。输出结果的知识蒸馏被命名为语义一致性蒸馏,通过将对抗训练整合到知识蒸馏方法中,学生网络可以学习教师网络的输出特征知识。实验结果表明,我们的知识蒸馏法效果良好,轻模型可以从蒸馏法中受益。
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引用次数: 0
期刊
2024 Australian & New Zealand Control Conference (ANZCC)
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