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Design and Analysis of a MATSim Scenario From Open Data: The Messina City Use Case 基于开放数据的MATSim场景设计与分析:墨西拿市用例
IF 8.6 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2024-11-18 DOI: 10.1109/TSMC.2024.3490854
Annamaria Ficara;Maria Fazio;Antonio Celesti;Massimo Villari
In the last years, our cities become more and more crowded due to the increasing number of cars into old city planes. So, even small/medium cities experience a travel time comparable with the bigger ones. To improve mobility management in modern cities, specific simulation tools can be used to analyze the impact of different mobility plans on mobility and, therefore to find the most suitable solution for each city. However, these tools are often hard to be used by city traffic managers without advanced computer skills. In this article, we used a multiagent transport simulation (MATSim) to provide a simple tool that can be easily used by end-users to better plan mobility strategies for both private and public transportation. In particular, starting from the open data provided by the city of Messina, we have implemented a software tool able to process MATSim events. Moreover, we propose a metric to estimate the safety of roads for cyclists. From the experimental results provided by the proposed software, we are able to discover the most overloaded links and estimate the travel time distribution by hour of departure time.
近年来,由于越来越多的汽车驶入老旧的城市平面,我们的城市变得越来越拥挤。因此,即使是中小城市的交通时间也与大城市不相上下。为了改善现代城市的交通管理,可以使用特定的模拟工具来分析不同交通计划对交通的影响,从而为每个城市找到最合适的解决方案。然而,没有高级计算机技能的城市交通管理者通常很难使用这些工具。在本文中,我们利用多代理交通模拟(MATSim)提供了一个简单的工具,便于最终用户更好地规划私人和公共交通的交通策略。特别是,从墨西拿市提供的公开数据出发,我们开发了一款能够处理 MATSim 事件的软件工具。此外,我们还提出了一种衡量标准,用于评估道路对骑自行车者的安全性。从软件提供的实验结果中,我们发现了超载最严重的路段,并估算了按出发时间小时计算的旅行时间分布。
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引用次数: 0
Robust Bias-Compensated CR-NSAF Algorithm: Design and Performance Analysis 鲁棒偏补偿CR-NSAF算法:设计与性能分析
IF 8.6 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2024-11-18 DOI: 10.1109/TSMC.2024.3491188
Pengwei Wen;Bolin Wang;Boyang Qu;Sheng Zhang;Haiquan Zhao;Jing Liang
The censored regression (CR)-based normalized subband adaptive algorithm (CR-NSAF) model has been recently introduced for processing signals with censored data. However, the effectiveness of this algorithm declines when dealing with noisy input signals in impulsive noise environments. To resolve this challenge, we propose a robust bias-compensated CR-NSAF algorithm (RBC-CRNSAF). This algorithm alleviates the negative impacts of the CR system and improves robustness by employing a logarithmic cost function approach. It also minimizes estimation bias from input noise by incorporating new compensation terms into the weights update function. Additionally, we analyze the computational complexity, convergence characteristics, and stability conditions of the algorithm. Finally, computer simulations indicate that RBC-CRNSAF considerably outperforms other similar algorithms in impulsive noise environments, validating its enhanced performance.
最近提出了一种基于截短回归(CR)的归一化子带自适应算法(CR- nsaf)模型,用于处理截短数据信号。然而,在脉冲噪声环境下,该算法在处理带有噪声的输入信号时,其有效性有所下降。为了解决这一挑战,我们提出了一种鲁棒的偏差补偿CR-NSAF算法(RBC-CRNSAF)。该算法采用对数代价函数方法,减轻了CR系统的负面影响,提高了鲁棒性。它还通过将新的补偿项合并到权重更新函数中来最小化来自输入噪声的估计偏差。此外,我们还分析了该算法的计算复杂度、收敛特性和稳定性条件。最后,计算机仿真表明,RBC-CRNSAF在脉冲噪声环境下的性能明显优于其他类似算法,验证了其增强的性能。
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引用次数: 0
Upper Bounds of Uncertainty for Dempster Combination Rule-Based Evidence Fusion Systems 基于Dempster组合规则的证据融合系统的不确定性上界
IF 8.6 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2024-11-18 DOI: 10.1109/TSMC.2024.3491317
Xinyang Deng;Wen Jiang
Quantifying the epistemic uncertainty for static information and dynamic fusion or reasoning processes is still unsolved for various epistemic uncertainty theories. This study focuses on the Dempster-Shafer evidence theory, which is of great ability in representing and fusing uncertain information with imprecision and ignorance on the basis of basic probability assignment (BPA) and Dempster combination rule (DCR). In order to effectively measure and infer the epistemic uncertainty for both static BPAs and dynamic fusion processes, a solution based on plausibility entropy is proposed in this study. At first, four new properties, called grouping, splitting, weighted additivity, and weighted subadditivity, are proved for the first time in this study to strengthen the theoretical foundation of plausibility entropy in measuring the uncertainty associated with a given BPA. Second, the upper bounds of uncertainty are derived for typical BPA-based multisource information fusion systems, including standard DCR, weighted DCR, discounted DCR fusion systems for evidence defined on the same frame of discernment (FOD), and the DCR fusion system for evidence defined on multiple distinct FODs. Several examples are given to illustrate these results.
对静态信息和动态融合或推理过程的认知不确定性进行量化是各种认知不确定性理论尚未解决的问题。Dempster- shafer证据理论在基本概率分配(BPA)和Dempster组合规则(DCR)的基础上,对具有不精确和无知的不确定信息具有较强的表征和融合能力。为了有效地测量和推断静态双酚a和动态融合过程的认知不确定性,本研究提出了一种基于似然熵的解决方案。首先,本文首次证明了分组、分裂、加权可加性和加权次可加性四个新性质,加强了可信性熵测量BPA不确定性的理论基础。其次,推导了典型的基于双酚a的多源信息融合系统的不确定性上界,包括基于同一识别框架的标准DCR、加权DCR、折扣DCR融合系统以及基于多个不同识别框架的DCR融合系统。给出了几个例子来说明这些结果。
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引用次数: 0
Iterative Learning Control Design for Iteration-Varying State-of-Charge Profiles of Electric Vehicle Batteries 电动汽车电池迭代变充电状态曲线的迭代学习控制设计
IF 8.6 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2024-11-15 DOI: 10.1109/TSMC.2024.3490553
Dinh Hoa Nguyen
In this research, a battery control method is proposed to handle the repetitive but nonidentical daily state-of-charge (SoC) profiles of electric vehicle (EV) batteries. The proposed method employs an iterative learning control (ILC) framework having a quadratic performance index with iteration-varying weighting matrices. This results in iteration-varying ILC control gains to better cope with iteration-varying SoC profiles. Moreover, input constraints representing the limits on the ranges of the charge and discharge currents are considered, leading to an iteration-varying constrained convex optimization problem. This optimization problem is solved to obtain the ILC control input update via resolving its Lagrange dual problem. Next, a data-driven method based on the dynamic mode decomposition (DMD) approach is proposed to predict the SoC profile in the next weekday based on the SoC profiles in the current and previous weekdays. The predicted SoC profile is then served as the reference for the ILC tracking controller. Finally, the proposed methods are verified through extensive numerical simulations for a synthetic case and for a realistic, benchmark driving pattern. In the simulations, different ways of selecting the iteration-varying weighting matrices are introduced and their control performances are compared. It is also shown that the proposed ILC control design outperforms conventional P-type and adaptive ILC controllers as well as the classical proportional-integral-derivative controller on the tracking of the SoC profile based on the considered realistic driving pattern.
针对电动汽车电池重复但不相同的日荷电状态(SoC)分布,提出了一种电池控制方法。该方法采用迭代学习控制(ILC)框架,该框架具有迭代变权矩阵的二次性能指标。这导致迭代变化的ILC控制增益,以更好地应对迭代变化的SoC配置文件。此外,考虑了表示充放电电流范围限制的输入约束,导致迭代变化的约束凸优化问题。该优化问题通过求解其拉格朗日对偶问题来获得ILC控制输入的更新。其次,提出了一种基于动态模态分解(DMD)方法的数据驱动方法,以当前和前一个工作日的SoC特征为基础,预测下一个工作日的SoC特征。然后,预测的SoC配置文件作为ILC跟踪控制器的参考。最后,通过一个综合案例和一个现实的基准驾驶模式的大量数值模拟验证了所提出的方法。在仿真中,介绍了不同的迭代变权矩阵选择方法,并对其控制性能进行了比较。研究还表明,基于考虑的实际驱动模式,所提出的ILC控制设计在SoC轮廓跟踪方面优于传统的p型和自适应ILC控制器以及经典的比例积分导数控制器。
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引用次数: 0
Rec-PF: Data-Driven Large-Scale Deep Learning Recommendation Model Training Optimization Based on Tensor-Train Embedding Table With Photovoltaic Forecast 基于张量-训练嵌入表和光伏预测的数据驱动大规模深度学习推荐模型训练优化
IF 8.6 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2024-11-13 DOI: 10.1109/TSMC.2024.3485960
Yunfeng Li;Zheng Wang;Chenhao Ren;Xiaoming Hou;Shengli Zhang
Photovoltaic (PV) power forecasting is important for promoting the integration of renewable energy sources. However, neural network-based methods, particularly deep learning for PV power forecasting, face challenges with computational and memory requirements when dealing with industry-scale datasets. To address this, we introduce Rec-PF, a robust computational framework employing the tensor-train (TT) technique. This framework aims to streamline the training process of massive deep learning recommendation models (DLRMs) on constrained resources. Rec-PF employs a high-performance compressed embedding table, enhancing TT decomposition using key computing primitives. It serves as a drop-in replacement for the PyTorch API. Additionally, Rec-PF utilizes an index reordering technique to leverage local and global information from training inputs, thereby enhancing performance. Furthermore, Rec-PF adopts a pipeline training model, eliminating the need for communication between training workers and host memory. We are pioneers in applying DLRM to PV power prediction to reduce training time without compromising accuracy. Our approach demonstrates a twofold improvement in training time compared to methods that do not incorporate our approach. To better demonstrate the enhanced performance of the algorithm, we specifically compare its efficiency with other frameworks using datasets commonly employed in recommender systems. Comprehensive experiments indicate that Rec-PF is capable of processing the largest publicly accessible DLRM and PV datasets on a single GPU, offering a threefold acceleration compared to state-of-the-art DLRM and PV frameworks.
光伏发电功率预测对促进可再生能源并网具有重要意义。然而,基于神经网络的方法,特别是用于光伏发电预测的深度学习,在处理工业规模的数据集时,面临着计算和内存需求的挑战。为了解决这个问题,我们引入了Rec-PF,一种采用张量训练(TT)技术的鲁棒计算框架。该框架旨在简化在受限资源上的大规模深度学习推荐模型(dlrm)的训练过程。Rec-PF采用高性能压缩嵌入表,使用关键计算原语增强TT分解。它可以作为PyTorch API的临时替代品。此外,Rec-PF利用索引重新排序技术来利用来自训练输入的局部和全局信息,从而提高性能。此外,Rec-PF采用流水线培训模型,消除了培训工作者与主机内存之间的通信需求。我们是将DLRM应用于光伏功率预测的先驱,在不影响准确性的情况下减少培训时间。与没有采用我们方法的方法相比,我们的方法在训练时间上有了两倍的改进。为了更好地展示该算法的增强性能,我们特别使用推荐系统中常用的数据集将其与其他框架的效率进行了比较。综合实验表明,Rec-PF能够在单个GPU上处理最大的可公开访问的DLRM和PV数据集,与最先进的DLRM和PV框架相比,提供三倍的加速。
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引用次数: 0
Finite- and Fixed-Time Learning Control for Continuous-Time Nonlinear Systems 连续时间非线性系统的有限和固定时间学习控制
IF 8.6 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2024-11-13 DOI: 10.1109/TSMC.2024.3488961
Zihan Li;Dong Shen;Daniel W. C. Ho
Finite- and fixed-time parameter estimation and adaptive control have been extensively investigated in recent years. This study proposes a finite- and fixed-time learning control framework to achieve simultaneous finite/fixed-time parameter estimation and control. The proposed learning control method first estimates unknown parameters and then uses these estimates to improve the control performance. Therefore, we first consider the convergence condition of finite/fixed-time parameter estimation. Next, a novel learning-based finite/fixed control law is designed. Unlike most existing adaptation laws, the estimate is updated to improve the understanding of the system rather than eliminate the influence of uncertainties. The finite/fixed-time convergence of the system states is analyzed using a direct dynamic analysis method that differs from the long-used Lyapunov method. We show that the proposed control input satisfies the excitation condition of the finite/fixed-time estimation, indicating simultaneous estimation and control. Finally, numerical simulations are performed to verify the theoretical results.
有限和定时参数估计和自适应控制近年来得到了广泛的研究。本研究提出一种有限和固定时间学习控制框架,以同时实现有限/固定时间参数估计和控制。提出的学习控制方法首先估计未知参数,然后利用这些估计来提高控制性能。因此,我们首先考虑有限/固定时间参数估计的收敛条件。其次,设计了一种新的基于学习的有限/固定控制律。与大多数现有的适应律不同,估算的更新是为了提高对系统的理解,而不是消除不确定性的影响。采用一种不同于长期使用的Lyapunov方法的直接动态分析方法,分析了系统状态的有限/固定时间收敛性。我们证明了所提出的控制输入满足有限/固定时间估计的激励条件,表明同时估计和控制。最后,通过数值模拟验证了理论结果。
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引用次数: 0
A Policy-Based Meta-Heuristic Algorithm for Energy-Aware Distributed No-Wait Flow-Shop Scheduling in Heterogeneous Factory Systems 异构工厂系统中能量感知分布式无等待流车间调度的策略启发式算法
IF 8.6 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2024-11-13 DOI: 10.1109/TSMC.2024.3488205
Fuqing Zhao;Lisi Song;Tao Jiang;Ling Wang;Chenxin Dong
In the face of environmental deterioration and global climate change, the concept of carbon neutrality and carbon peaking has gained prominence as a means to balance development and environmental preservation worldwide. Energy-aware scheduling is becoming the key scenario for environment conservation in manufacturing. This study focuses on addressing the energy-aware distributed no-wait flow-shop scheduling problem in a heterogeneous factory system (EDNWFSP-HFS) to minimize total energy consumption (TEC) and total tardiness (TTDs). A mixed-integer linear programming (MILP) model is formulated and a policy-based meta-heuristic algorithm (MHA-PG) is specifically designed to solve EDNWFSP-HFS. First, the optimal allocation rules based on random sequence (OAR-RS) are designed to initialize the population. Second, a policy-based method is employed to guide the algorithm toward making a better decision. Third, the energy-saving strategy considering specific knowledge of EDNWFSP-HFS is summarized to further optimize the feasible solution. Extensive simulations are conducted, comparing the performance of MHA-PG against several state-of-the-art algorithms. The results demonstrate that the proposed algorithm outperforms the competing approaches in solving EDNWFSP-HFS, indicating its superior performance and effectiveness.
面对环境恶化和全球气候变化,碳中和和碳峰值的概念作为平衡发展和环境保护的手段在世界范围内得到了突出的体现。能源意识调度正成为制造业环境保护的关键方案。本文研究了异构工厂系统(EDNWFSP-HFS)中能量感知的分布式无等待流水车间调度问题,以最小化总能耗(TEC)和总延迟(TTDs)。针对EDNWFSP-HFS问题,建立了混合整数线性规划(MILP)模型,设计了基于策略的元启发式算法(MHA-PG)。首先,设计基于随机序列的最优分配规则(OAR-RS)对种群进行初始化;其次,采用基于策略的方法引导算法做出更好的决策。第三,总结考虑EDNWFSP-HFS具体知识的节能策略,进一步优化可行方案。进行了大量的仿真,比较了MHA-PG与几种最先进算法的性能。结果表明,该算法在求解EDNWFSP-HFS问题上优于其他方法,具有良好的性能和有效性。
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引用次数: 0
A Distributed Event-Triggered Neurodynamic Approach for Lyapunov Matrix Equation 李雅普诺夫矩阵方程的分布式事件触发神经动力学方法
IF 8.6 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2024-11-13 DOI: 10.1109/TSMC.2024.3485652
Haoze Li;Guannan Li;Sitian Qin
In this article, a neurodynamic approach based on event-triggered mechanism for solving Lyapunov matrix equation is established. First, employing matrix decomposition technique, the Lyapunov matrix equation is reformulated as a distributed optimization problem. Then, a distributed neurodynamic approach is constructed to solve the corresponding distributed optimization problem owing to its better-parallel computing ability. In order to protect the privacy of agents and fulfill the distributed communication, a primal-dual method with auxiliary variables is introduced. Agents collaborate to solve distributed optimization problem by interacting with auxiliary variables rather than decision variables. Besides, to reduce the communication cost and frequency between agents, the neurodynamic approach incorporates an event-triggered mechanism for Lyapunov matrix equation for the first time. Through theoretical analysis, it is proved that the state solution of the proposed neurodynamic approach converges exponentially and no Zeno behavior occurs. Finally, a numerical example is given to show the feasibility and effectiveness of the proposed event-triggered neurodynamic approach.
本文建立了一种基于事件触发机制的求解李雅普诺夫矩阵方程的神经动力学方法。首先,利用矩阵分解技术,将李雅普诺夫矩阵方程重新表述为一个分布式优化问题。然后,由于分布式神经动力学方法具有更好的并行计算能力,因此构建了分布式神经动力学方法来解决相应的分布式优化问题。为了保护代理的隐私性和实现分布式通信,引入了一种带辅助变量的原对偶方法。agent通过与辅助变量而不是决策变量的交互来协作解决分布式优化问题。此外,为了降低agent之间的通信成本和频率,神经动力学方法首次引入了Lyapunov矩阵方程的事件触发机制。通过理论分析,证明了所提出的神经动力学方法的状态解是指数收敛的,并且不发生芝诺行为。最后,给出了一个数值算例,验证了所提事件触发神经动力学方法的可行性和有效性。
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引用次数: 0
Equivalent Piecewise Derivative Adaptive Control With Fuzzy Rules Emulated Network and Mitigation of Catastrophic Forgetting Learning 模糊规则仿真网络的等效分段导数自适应控制及灾难性遗忘学习的缓解
IF 8.6 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2024-11-13 DOI: 10.1109/TSMC.2024.3490372
Chidentree Treesatayapun
This article presents a novel adaptive control approach for a class of unknown discrete-time systems using piecewise derivatives derived from experimentally obtained input-output characteristics of the controlled plant. The control law is formulated using a multi-input fuzzy rules emulated network (MiFREN). The learning law is developed to address the issue of catastrophic forgetting, in alignment with the proposed information matrix. Closed-loop analysis demonstrates convergence of the tracking error and weight parameters under feasible conditions. Validation through experiments with a DC-motor torque control system, alongside comparative controllers, demonstrates the superior tracking performance of the proposed method and its effective mitigation of forgetting during tracking tasks.
本文提出了一种新的自适应控制方法,用于一类未知的离散时间系统,使用由实验得到的被控对象的输入输出特性的分段导数。采用多输入模糊规则仿真网络(MiFREN)制定控制律。学习法则的发展是为了解决灾难性遗忘的问题,与所提出的信息矩阵保持一致。闭环分析证明了在可行条件下跟踪误差和权参数的收敛性。通过直流电机转矩控制系统的实验验证,以及比较控制器,证明了所提出的方法具有优越的跟踪性能,并有效地减轻了跟踪任务中的遗忘。
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引用次数: 0
Practical Prescribed-Time Control for Constrained Human–Robot Co-Transportation With Velocity Observer and Obstacle Avoidance 具有速度观测器和避障的约束人机协同运输实用规定时间控制
IF 8.6 1区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS Pub Date : 2024-11-13 DOI: 10.1109/TSMC.2024.3489587
Wen Yang;Yulian Jiang;Yanzheng Zhu;Hongjing Liang;Shenquan Wang
It is greatly desirable to carry out the secure practical prescribed-time human-robot co-transportation task. The implementation of such application becomes even more theoretical and practical challenge if uncertainties in the robot model, unmeasured velocity vector and multiple-dynamic-obstacles environment are involved, yet certain behavior indices are also pursued. In this work, a settling time regulator is introduced and it is integrated with the dynamic surface-based backstepping design embedded with specific system transformation. This results in a solution that both constrained and unconstrained cases can be accommodated uniformly, concurrently, the settling time and tracking precision can be preset by user as required. Furthermore, a fuzzy velocity observer is designed with aid of the fuzzy logic technique, which is nontrivial to perform a control design of robot dynamics with unmeasured velocity vector and modeling uncertainties. In particular, benefiting from integral multiplicative barrier-Lyapunov function, an improved adaptive obstacle-avoiding controller is designed, which, without control singular issue, is capable of achieving desired tracking while avoiding obstacles encountered. The validity and benefits of the resultant control strategy are eventually substantiated via the simulation results of a two-DOF robotic manipulator.
实现安全实用的规定时间人机协同运输任务是人们迫切需要的。当涉及到机器人模型的不确定性、未测量的速度矢量和多动态障碍物环境时,实现这一应用将面临更大的理论和实践挑战,但同时也需要追求一定的行为指标。本文介绍了一种沉降时间调节器,并将其与嵌入特定系统变换的基于动态曲面的反演设计相结合。这使得有约束和无约束情况都可以统一适应,同时,沉降时间和跟踪精度可以由用户根据需要预先设定。在此基础上,利用模糊逻辑技术设计了一个模糊速度观测器,该观测器对于具有速度矢量未测和建模不确定性的机器人动力学控制设计具有重要意义。特别地,利用积分乘障-李雅普诺夫函数,设计了一种改进的自适应避障控制器,该控制器在不存在控制奇异问题的情况下,能够在避障的同时实现理想的跟踪。最后通过一个二自由度机械臂的仿真结果验证了该控制策略的有效性和有效性。
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引用次数: 0
期刊
IEEE Transactions on Systems Man Cybernetics-Systems
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