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2022 4th International Conference on Industrial Artificial Intelligence (IAI)最新文献

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The research of vehicle monocular ranging based on YOlOv5 基于YOlOv5的车载单目测距研究
Pub Date : 2022-08-24 DOI: 10.1109/IAI55780.2022.9976821
Qing Li, Hongcheng Huang, Pengzhi Chu
Target detection and distance estimation for autonomous driving have been making remarkable strides in recent years. In autonomous driving, target detection mainly refers to the identification of vehicles, pedestrians, traffic signs, etc. Nowadays, target detection technology has gradually matured, especially with the emergence of Faster R-CNN and YOLO, which has greatly improved the accuracy and efficiency of target detection. Not only to detect objects, we want to know more about spatial and distance information between the vehicle and the objects, however, the complexity of road conditions challenges the ranging methods. When the road is crowded and there are many vehicles, which will block each other, reduces the ranging performance, especially for laser ranging and ultrasonic ranging. In this paper, a monocular visual ranging method based on YOLOv5 is proposed, which is divided into two steps. Stage one detects vehicles and pedestrians, predicts a bounding box for each detected target. The second stage determines the position of the object with the help of the bounding boxes and accurately extracts the feature points, then computes the specific distance base on the geometric relationship. In this paper, we considered various road conditions to improve performance in real-world road scenes and the distance measurement method in this paper is proved to be robust under different road conditions. Since only one camera is required, the equipment cost is greatly reduced. What's more, our model can be combined with lane detection to realize target recognition, object ranging and lane detection at the same time.
近年来,自动驾驶的目标检测和距离估计取得了显著进展。在自动驾驶中,目标检测主要是指对车辆、行人、交通标志等的识别。如今,目标检测技术已经逐渐成熟,特别是随着Faster R-CNN和YOLO的出现,大大提高了目标检测的精度和效率。除了检测目标外,我们还需要更多地了解车辆与目标之间的空间和距离信息,然而,道路条件的复杂性给测距方法带来了挑战。当道路拥挤,车辆较多时,会相互遮挡,降低测距性能,尤其是激光测距和超声波测距。本文提出了一种基于YOLOv5的单目视觉测距方法,该方法分为两个步骤。第一阶段检测车辆和行人,为每个检测到的目标预测一个边界框。第二阶段利用边界框确定目标的位置,准确提取特征点,然后根据几何关系计算具体距离;在本文中,我们考虑了各种道路条件来提高真实道路场景的性能,并且本文的距离测量方法在不同的道路条件下被证明是鲁棒的。由于只需要一台摄像机,因此大大降低了设备成本。此外,我们的模型可以与车道检测相结合,同时实现目标识别、目标测距和车道检测。
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引用次数: 0
Distributed Reputation-based Strategy for Economic Environmental Dispatch under Cyber Attacks 网络攻击下基于分布式信誉的经济环境调度策略
Pub Date : 2022-08-24 DOI: 10.1109/IAI55780.2022.9976541
Lingyun Xu, Ying Wan
This paper studies a distributed combined economic environmental dispatch problem (CEEDP) of the smart grid. CEEDP aims to minimize the economic costs and also emissions with supply-demand balance and generation constraints. A distributed reputation-based algorithm is proposed to defend against non-colluding and colluding attacks, integrating attack detection, isolation, and restoration strategy. By dynamically updating the reputation value of each generator, the isolation process can intelligently adjust the communication weights among the generator units to isolate the units that are under attack. Finally, simulation examples are given to verify the effectiveness of the proposed strategy.
研究了智能电网的分布式联合经济环境调度问题。CEEDP的目标是在供需平衡和发电限制的情况下,最大限度地降低经济成本和排放。提出了一种基于分布式声誉的非串通攻击和串通攻击防御算法,该算法集成了攻击检测、隔离和恢复策略。隔离过程通过动态更新每个发电机组的信誉值,智能地调整发电机组之间的通信权值,从而隔离受攻击的机组。最后通过仿真实例验证了所提策略的有效性。
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引用次数: 0
Comprehensive Evaluation and Analysis The Talent Training System Using Composite DEA under the Background of the Replacement of Old Growth Drivers with New Ones 新旧动能转换背景下人才培养体系的综合评价与分析
Pub Date : 2022-08-24 DOI: 10.1109/IAI55780.2022.9976806
W. Yumei, Han Mei, Gao Xiuyun
The replacement of old growth drivers with new ones injects a new impetus for economic development, puts forward higher and more comprehensive requirements for talents, and puts forward new standards for enterprise employment and current talent education, which leads to the disconnection between enterprise employment standards and college education mode. Under the background of the replacement of old growth drivers with new ones, this study constructs the talent training evaluation index system, including two aspects: input and output of talent training. The existing input index is usually composed of human input, material input and financial input, while the output index includes teaching output, scientific research output and social service output. Taking China Education Statistics Yearbook (2016–2020) as the data source, Composite DEA method is used to comprehensively evaluate and analyze the talent training system under the background of the replacement of old growth drivers with new ones.
新旧动能的转换为经济发展注入了新的动力,对人才提出了更高、更全面的要求,对企业用工和现行人才教育提出了新的标准,导致企业用工标准与高校教育模式脱节。在新旧动能转换背景下,本研究构建了人才培养评价指标体系,包括人才培养投入和产出两个方面。现有的投入指标通常由人力投入、物力投入和财力投入组成,而产出指标则包括教学产出、科研产出和社会服务产出。以《中国教育统计年鉴(2016-2020)》为数据源,采用复合DEA方法对新旧动能转换背景下的人才培养体系进行综合评价和分析。
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引用次数: 0
Data-Driven Tube-based Model Predictive Control of an Industrial Thickener 基于数据驱动管的工业浓缩机模型预测控制
Pub Date : 2022-08-24 DOI: 10.1109/IAI55780.2022.9976793
Runda Jia, Shulei Zhang, Zhiqi Li, Kang Li
In this work, a data-driven tube-based model predictive control (MPC) is presented to track the setpoints of the underflow concentration. By defining the terminal admissible set to consider all the possible steady-states, the controller can ensure tracking for all reachable operating setpoints. Besides, a data-driven general polyhedral uncertainty set is constructed by employing the principal component analysis (PCA) technique, which can effectively capture correlations among uncertain variables. Based on the constructed uncertainty set, the feasible region could be enlarged while reducing the conservatism of control performance. In addition, recursive feasibility and stability of the controller can be guaranteed. The effectiveness of the proposed method is verified by tracking problems of the thickening process.
在这项工作中,提出了一种基于数据驱动管的模型预测控制(MPC)来跟踪下流浓度的设定值。通过定义考虑所有可能稳态的终端允许集,控制器可以保证对所有可达的运行设定值进行跟踪。此外,利用主成分分析(PCA)技术构建了一个数据驱动的通用多面体不确定性集,可以有效地捕捉不确定变量之间的相关性。基于构造的不确定性集,可以扩大可行区域,同时降低控制性能的保守性。此外,还可以保证控制器递归的可行性和稳定性。通过对增稠过程的跟踪问题验证了该方法的有效性。
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引用次数: 0
Analysis of non-stationary random vibration environment of industrial robot based on EMD and PNN 基于EMD和PNN的工业机器人非平稳随机振动环境分析
Pub Date : 2022-08-24 DOI: 10.1109/IAI55780.2022.9976874
Hai Yang, Hong Zhu, Yefeng Liu, Yuan Zhao
Aiming at the characteristic of frequency density of non-stationary random vibration signals of industrial robots during machining, a multi-component process neural network (PNN) auto-regressive model was proposed based on empirical mode decomposition (EMD). First, the original time series were decomposed into intrinsic mode functions (IMF) of different scales by EMD. Then, the time-varying parameters of each IMF were analyzed by PNN and the time-varying power spectral density was determined. Finally, the time-varying independent power spectral density of all components is reconstructed by linear superposition as the time-varying independent power spectral density of the original signal. The calculation results show that the frequency resolution performance of this method is better than that of traditional analysis method.
针对工业机器人加工过程中非平稳随机振动信号的频率密度特点,提出了基于经验模态分解(EMD)的多分量过程神经网络(PNN)自回归模型。首先,利用EMD将原始时间序列分解为不同尺度的内禀模态函数(IMF);然后利用PNN对各IMF的时变参数进行分析,确定时变功率谱密度;最后,通过线性叠加将各分量的时变独立功率谱密度重构为原始信号的时变独立功率谱密度。计算结果表明,该方法的频率分辨性能优于传统的分析方法。
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引用次数: 0
Structural Damage Detection of Spacecraft Equipment Based on Data Driven Modelling and Nonlinear Output Frequency Response Function 基于数据驱动建模和非线性输出频响函数的航天器设备结构损伤检测
Pub Date : 2022-08-24 DOI: 10.1109/IAI55780.2022.9976560
Changshuai Yu, Yung‐Peng Zhu, Haitao Luo, Zhong Luo
Damage detection of the spacecraft equipment is required in vibration test to avoid the costly spacecraft equipment worsening of damage. The current method is to compare the change of the natural frequencies, which may be failure because linear feature is usually not sensitive to some damage. The objective of this study is to develop a novel structural damage detection method of spacecraft equipment to address the current method problem. To achieve this goal, use regularization FROLS (Forward Regression Orthogonal Least Squares) algorithm to identify the NARX (Nonlinear Autoregressive with Exogenous Input) model of the spacecraft equipment. After that, use the theory of NOFRF (Nonlinear Output Frequency Response Function) under harmonic input to obtain the NOFRFs, which can be used to detect the damage of spacecraft equipment in vibration test. Finally, an experimental study is carried out to conduct damage detection for a cantilever plate structure to demonstrate the effectiveness of the proposed method in engineering.
在振动试验中需要对航天器设备进行损伤检测,以避免昂贵的航天器设备损伤恶化。目前的方法是比较固有频率的变化,这可能是失效,因为线性特征通常对某些损伤不敏感。本研究的目的是开发一种新的航天器设备结构损伤检测方法,以解决现有方法存在的问题。为实现这一目标,采用正则化前向回归正交最小二乘(FROLS)算法对航天器设备的非线性自回归(NARX)模型进行识别。然后,利用谐波输入下的非线性输出频响函数(NOFRF)理论,得到了非线性输出频响函数,可用于航天器设备在振动试验中的损伤检测。最后,通过对悬臂板结构进行损伤检测的实验研究,验证了该方法在工程中的有效性。
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引用次数: 1
An ADRC-based Model Predictive Direct Power Control to Alleviate Low-Frequency Oscillations of Traction Dual Rectifiers 基于自抗扰控制器的牵引双整流器低频振荡预测直接功率控制
Pub Date : 2022-08-24 DOI: 10.1109/IAI55780.2022.9976682
Xinju Wang, Xiaoming Wang
Low-frequency oscillation (LFO) phenomenon of traction network often occurs in vehicle-grid coupling systems (VGCS), which may lead to traction blockade of the electric multiple units (EMUs). To improve the control of traction dual rectifiers (TDR) and suppress LFO, an auto-disturbance rejection control-based model predictive direct power control (ADRC-MPDPC) approach is developed. First, a voltage correction based on Newton interpolation is carried out to eliminate the error caused by the sampling process of the line-side voltage sensor. Besides, to improve the dynamic performance and robustness of the MPDPC, a voltage outer-loop control strategy based on first-order ADRC is designed. Finally, a simulation model of VGCS is constructed to test the control performance and the effectiveness of the proposed algorithm. The experimental results show that the proposed control can not only improve LFO of the dc-link voltage but also effectively alleviate the harmonic distortion of the current and suppress the power pulsation of MPDPC in the TDR.
在车网耦合系统中,牵引网络经常出现低频振荡现象,这种现象可能导致动车组的牵引阻塞。为了提高牵引双整流器(TDR)的控制性能和抑制LFO,提出了一种基于自抗扰控制的模型预测直接功率控制(ADRC-MPDPC)方法。首先,进行基于牛顿插值的电压校正,消除线侧电压传感器采样过程产生的误差;为了提高MPDPC的动态性能和鲁棒性,设计了一种基于一阶自抗扰控制器的电压外环控制策略。最后,建立了VGCS的仿真模型,验证了该算法的控制性能和有效性。实验结果表明,所提出的控制方法不仅可以提高直流电压的LFO,而且可以有效地缓解电流的谐波畸变,抑制TDR中MPDPC的功率脉动。
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引用次数: 0
Research and Design of Human Behavior Recognition Method in Industrial Production Based on Depth Image 基于深度图像的工业生产中人体行为识别方法研究与设计
Pub Date : 2022-08-24 DOI: 10.1109/IAI55780.2022.9976693
Shuo Wang, Shengping Yu, Haikuan Wang, Dakui Wu, Wenju Zhou, H. Luo
Correct assembly behavior in industrial production is a direct means to ensure production quality and efficiency. Aiming at the problems of worker misoperation or lack of important assembly steps in the production and assembly process, a human behavior recognition method based on ToF camera is proposed. The method segments the extracted depth motion maps (DMMs) according to the differences between frames, and extracts histogram of oriented gradient (HOG) descriptors and multiscale grayscale count (MGC) descriptors as local features. Then a hierarchical DMMs multi-classifier recognition framework is built based on stacking strategy, combining support vector machine (SVM), K-nearest neighbor (KNN), random forest (RF) and XGBoost classifiers, achieving 98.2% accuracy on MSR ACTION 3D dataset and 87.1% accuracy on self-built dataset, respectively.
在工业生产中,正确的装配行为是保证生产质量和效率的直接手段。针对生产装配过程中工人误操作或缺少重要装配步骤的问题,提出了一种基于ToF相机的人体行为识别方法。该方法根据帧间差异对提取的深度运动图(dm)进行分割,提取定向梯度(HOG)描述符直方图和多尺度灰度计数(MGC)描述符作为局部特征。然后,结合支持向量机(SVM)、k近邻(KNN)、随机森林(RF)和XGBoost分类器,构建了基于堆叠策略的分层dmm多分类器识别框架,在MSR ACTION 3D数据集上的准确率分别达到98.2%和87.1%。
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引用次数: 1
Frame-based Feature Tracking and EKF Framework for Event Cameras 基于帧的事件相机特征跟踪和EKF框架
Pub Date : 2022-08-24 DOI: 10.1109/IAI55780.2022.9976865
Xinghua Liu, Hanjun Xue, Xiang Gao, Jianwei Guan
Event cameras are silicon retina sensors that are more advantageous than traditional cameras in low-latency tracking and high dynamic range scenes. In this paper, we present a visual odometry algorithm based on the Dynamic and Active-pixel Vision Sensor (DAVIS), and the 6 Degree-of-Freedom (6-DoF) object motion can be tracked by the proposed algorithm. We detect features and track motion on the image plane, then feature-based pose estimation and extended Kalman filter (EKF) framework are tightly intertwined in event-based visual odometry. In experiments, the accuracy of our approach is evaluated in several object tracking scenarios. The trajectory of a low-latency and high-rate tracking is obtained, and the utilization rate of CPU resources is improved by using an event-driven strategy.
事件相机是硅视网膜传感器,在低延迟跟踪和高动态范围场景中比传统相机更有优势。本文提出了一种基于动态和主动像素视觉传感器(DAVIS)的视觉里程计算法,该算法可实现6自由度(6- dof)物体运动的跟踪。我们在图像平面上检测特征和跟踪运动,然后将基于特征的姿态估计和扩展卡尔曼滤波(EKF)框架紧密地结合在一起。在实验中,我们的方法在几个目标跟踪场景中进行了准确性评估。采用事件驱动策略,获得了低延迟、高速率的跟踪轨迹,提高了CPU资源利用率。
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引用次数: 0
Light Model based on End-to-End for Steering Angle Detection 基于端到端光模型的转向角检测
Pub Date : 2022-08-24 DOI: 10.1109/IAI55780.2022.9976787
Yang Liu, Qiansheng Li, Yanchen Jiang, Yongfu Wang
This paper performs lane line angle detection in autonomous driving scenarios based on an end-to-end learning mechanism. Lane line angle detection is a vital technology research development direction in Autonomous Vehicles. However, since most lane line targets in remote sensing images have sparse features, it is still challenging to achieve accurate lane line angle detection in traffic status images in front of vehicles. A lane line angle detection algorithm based on the improved C3 module YOLOV5n algorithm is proposed, which mainly includes: a self-made lane curvature dataset; improvement of the loss function; improvement of the C3 module to improve the detection accuracy of the network. Experiments are conducted using the traffic status images in front of vehicles in the lane curvature dataset, and the results show that the algorithm achieves better detection results in lane curvature detection.
本文基于端到端学习机制实现了自动驾驶场景下的车道线角检测。车道线角检测是自动驾驶汽车重要的技术研究发展方向。然而,由于遥感图像中大多数车道线目标具有稀疏特征,因此在车辆前方交通状态图像中实现准确的车道线角检测仍然是一个挑战。提出了一种基于改进C3模块YOLOV5n算法的车道线角检测算法,主要包括:自制车道曲率数据集;损失函数的改进;对C3模块进行改进,提高网络的检测精度。利用车道曲率数据集中车辆前方的交通状态图像进行实验,结果表明该算法在车道曲率检测中取得了较好的检测效果。
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引用次数: 0
期刊
2022 4th International Conference on Industrial Artificial Intelligence (IAI)
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