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2020 2nd International Conference on Industrial Artificial Intelligence (IAI)最新文献

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Local Neighborhood Reliability Weighted Support Vector Machine 局部邻域可靠性加权支持向量机
Pub Date : 2020-10-23 DOI: 10.1109/IAI50351.2020.9262215
Yunlong Gao, Yisong Zhang, Baihua Chen, Yuhui Xiong
Support vector machine (SVM) is a classification model, which learns the decision surface that maximizes the margin in the feature space. Such a decision surface has a good classification ability for unknown new samples. In real-world applications, the data set usually contains many noises and outliers, which will affect the learning of the decision surface, thus the maximum margin cannot be obtained, and the generalization ability of SVM will be reduced. In this paper, we introduce an adjacency factor to each input point to characterize the local neighbor relationship between each point. Weighting each sample point by the adjacency factor can let different sample points make different contributions to the learning of the decision surface. Thus, we can filter out the influence of noises and outliers on the decision surface by this weighting method. We propose this new method namely local neighborhood reliability weighted support vector machine (LN-SVM).
支持向量机(Support vector machine, SVM)是一种分类模型,它学习在特征空间中使边界最大化的决策面。该决策面对未知的新样本具有很好的分类能力。在实际应用中,数据集通常包含许多噪声和离群值,这些噪声和离群值会影响决策面的学习,从而无法获得最大裕度,降低支持向量机的泛化能力。在本文中,我们为每个输入点引入邻接因子来表征每个输入点之间的局部邻接关系。用邻接系数对每个样本点进行加权,可以让不同的样本点对决策面的学习做出不同的贡献。因此,我们可以通过这种加权方法过滤掉决策面的噪声和异常值的影响。我们提出了一种新的方法,即局部邻域可靠性加权支持向量机(LN-SVM)。
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引用次数: 0
Operator-Based Robust Nonlinear Control for Calorimetric Power Loss Measurement System Using Peltier Device 基于算子的Peltier热损测量系统鲁棒非线性控制
Pub Date : 2020-10-23 DOI: 10.1109/IAI50351.2020.9262207
K. Mitsugi, M. Deng
This paper presents a method of operator-based nonlinear temperature control for a calorimeter using a Peltier device. The Peltier device has nonlinear characteristic and so it is not easy to design a controller which satisfies desired performance. Based on the concept of the Lipschitz operator and the robust right coprime factorization condition, nonlinear temperature controllers are designed for the model, and the closed-loop system's robust stability is guaranteed. Moreover, a tracking operator is designed to ensure the temperature tracking performance. Finally, simulation and experimental results are presented to show the effectiveness of the proposed design method.
本文提出了一种基于算子的珀尔帖式量热计非线性温度控制方法。珀尔帖装置具有非线性特性,设计出满足要求性能的控制器并不容易。基于Lipschitz算子的概念和鲁棒右素质分解条件,对模型设计了非线性温度控制器,保证了闭环系统的鲁棒稳定性。此外,还设计了跟踪算子以保证温度跟踪性能。最后,通过仿真和实验验证了所提设计方法的有效性。
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引用次数: 2
Virtual Commissioning and Machine Learning of a Reconfigurable Assembly System 可重构装配系统的虚拟调试与机器学习
Pub Date : 2020-10-23 DOI: 10.1109/IAI50351.2020.9262158
Liandong Zhang, Z. Cai, Lim Joo Ghee
The digital twin application in manufacturing is mainly based on the virtual simulation model of a digital twin to build a solid model, which is applied to the product processing and assembly to achieve precise production control. This paper presents a virtual commissioning digital twin model for the modularized automatic assembly system running in our lab. First, the Siemens NX MCD software tool is used to develop the virtual commissioning digital twin model for the system. Then the different working scenarios are simulated and implemented in the virtual physical simulation environment. The data from the proposed virtual commissioning digital twin model is collected and trained with 6 different machine learning algorithm such as Logistic Regression (LR), Linear Discriminant Analysis (LDA), K-Nearest Neighbors (KNN), Classification and Regression Trees (CART), Gaussian Naive Bayes (NB) and Support Vector Machines (SVM). The advantage of our newly developed virtual commissioning model is that it is able to simulate different working conditions without risk and cost-free. It is also convenient to mimic the worsening working status and failed operation scenarios which need long time to collect for the real system. We use the collected data as input for the machine learning to implement the system monitoring and predicting. The machine learning results for 6 learning algorithms are presented and it shows the possibilities and advantages of our proposed virtual commissioning digital twin model.
数字孪生在制造业中的应用主要是基于数字孪生的虚拟仿真模型建立实体模型,将其应用于产品的加工装配,实现精确的生产控制。本文提出了在实验室运行的模块化自动装配系统的虚拟调试数字孪生模型。首先,利用西门子NX MCD软件工具建立了系统的虚拟调试数字孪生模型。然后在虚拟物理仿真环境中对不同的工作场景进行了仿真和实现。采用逻辑回归(LR)、线性判别分析(LDA)、k近邻(KNN)、分类与回归树(CART)、高斯朴素贝叶斯(NB)和支持向量机(SVM)等6种不同的机器学习算法对虚拟调试数字孪生模型的数据进行了收集和训练。我们新开发的虚拟调试模型的优点是它能够模拟不同的工作条件,没有风险和成本。也便于模拟实际系统中需要长时间采集的恶化工作状态和失败运行场景。我们将收集到的数据作为机器学习的输入来实现系统的监测和预测。给出了6种学习算法的机器学习结果,并展示了我们提出的虚拟调试数字孪生模型的可能性和优势。
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引用次数: 2
Pre-processing for UAV Based Wildfire Detection: A Loss U-net Enhanced GAN for Image Restoration 基于无人机野火检测的预处理:用于图像恢复的损失U-net增强GAN
Pub Date : 2020-10-23 DOI: 10.1109/IAI50351.2020.9262172
Linhan Qiao, Youmin Zhang, Y. Qu
In this paper, a U-net with feature loss enhanced generative adversarial network (GAN) is designed for the wildfire or smoke images restoration which is captured by unmanned aerial vehicles in a serious environment. Based on the concepts of GAN, feature loss, and fastai API, we firstly crappy the target images, and train a U-net architecture based generator, then load the adaptive loss of discriminator and the mean square error together to train the GAN model. After the GAN, a second U-net grabs the feature loss from an Imagenet pre-trained loss network to generate the GAN output images with one more step. This U-net enhanced the generator of GAN and helped to get the main features in human conception. Comparing with other restoration methods, this model used the adaptive loss to train the GAN and perceptual loss to train the next U-net. Learning rate with simulation annealing helped jumping out of the local minimum. The result proved the good performance of this model.
针对恶劣环境下无人机捕获的野火或烟雾图像,设计了一种特征损失增强生成对抗网络(GAN)。基于GAN、特征损失和fastai API的概念,首先对目标图像进行预处理,训练基于U-net架构的生成器,然后加载鉴别器的自适应损失和均方误差一起训练GAN模型。在GAN之后,第二个U-net从Imagenet预训练的损失网络中获取特征损失,再经过一步生成GAN输出图像。该U-net增强了GAN的生成器,有助于获得人类概念的主要特征。与其他恢复方法相比,该模型使用自适应损失训练GAN,使用感知损失训练下一个U-net。模拟退火的学习率有助于跳出局部最小值。结果证明了该模型的良好性能。
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引用次数: 3
Real-time Wind Estimation with a Quadrotor using BP Neural Network 基于BP神经网络的四旋翼实时风估计
Pub Date : 2020-10-23 DOI: 10.1109/IAI50351.2020.9262193
Kaixin Wu, Ji-gong Li, Jing Yang, Fanfu Zeng, Jia Liu
This paper presents an approach based on BP neural network for quadrotors that estimates the wind velocity in real-time based on measurement data of its on-board inertial measurement unit (IMU) and GPS only. The proposed method is a gray box modelling method for the real-time wind estimation, avoids oversimplifications and determination of many parameters in the existing dynamic models or aerodynamic models of quadrotors. The nonlinear functional relationship between the wind velocity and the flight parameters provided by the on-board IMU and GPS is established after the training of the BP network, using the data collected from the quadrotor and an anemometer not far away from the quadrotor, and then applied to estimate the wind velocity in real time only with the outputs of the on-board IMU and GPS when the quadrotor is flying. The simulation results show that the proposed method can achieve wind estimation with a root mean square error (RMSE) less than 0.02 m/s.
本文提出了一种基于BP神经网络的四旋翼飞行器实时风速估计方法,该方法仅基于机载惯性测量单元(IMU)和GPS的测量数据。本文提出的方法是一种实时风估计的灰盒建模方法,避免了现有四旋翼飞行器动力学模型或气动模型中许多参数的过度简化和确定。在对BP网络进行训练后,利用四旋翼飞行器和离四旋翼不远的风速仪采集的数据,建立了风速与机载IMU和GPS提供的飞行参数之间的非线性函数关系,并将其应用于四旋翼飞行器飞行时仅利用机载IMU和GPS的输出实时估计风速。仿真结果表明,该方法可以实现风速估计的均方根误差(RMSE)小于0.02 m/s。
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引用次数: 4
Research on the development of intelligent chemical manufacturing industry in Shandong Province based on big data analysis 基于大数据分析的山东省智能化工制造业发展研究
Pub Date : 2020-10-23 DOI: 10.1109/IAI50351.2020.9262184
Yuan Jiyang, Z. Yanbin, Gao Jian
Intelligent chemical manufacturing industry is the basic industry and pillar industry of the national economy. The development of intelligent chemical manufacturing industry has the characteristics of high technology, high value-added, high intelligence intensiveness, synergy, intelligence, and greenness. Take Shandong Province as a case, Analyze the actual situation of the advantages, disadvantages, opportunities and threats of the development of the intelligent chemical manufacturing industry, Use grey forecasting method based on big data forecast to analyze the development trend of intelligent chemical manufacturing industry, Provide a scientific basis for the formulation of management systems and strategic objectives for the intelligent chemical manufacturing industry.
智能化工制造业是国民经济的基础产业和支柱产业。智能化工制造业的发展具有高技术、高附加值、高智能集约化、协同化、智能化、绿色化等特点。以山东省为例,分析智能化工制造行业发展的优势、劣势、机遇和威胁的实际情况,运用基于大数据预测的灰色预测方法,分析智能化工制造行业的发展趋势,为智能化工制造行业制定管理制度和战略目标提供科学依据。
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引用次数: 0
Hierarchical model predictive control of greenhouse climate to reduce energy cost 降低能源成本的温室气候分层模型预测控制
Pub Date : 2020-10-23 DOI: 10.1109/IAI50351.2020.9262227
Dong Lin, Lijun Zhang, X. Xia
This paper proposes a hierarchical control strategy for greenhouse climate control. The proposed hierarchical control consists of two layers (an upper layer and a lower layer). The upper layer is to generate set points by solving an optimization problem. The objective is to minimize the energy cost under the time-of-use (TOU) tariff while keeping greenhouse climate (temperature, relative humidity and carbon dioxide concentration) within the required range. The lower layer is to track the trajectories obtained by the upper layer. A model predictive controller is designed to address system disturbances and the results are compared with that of an open loop controller. A performance index, relative average deviation (RAD), is introduced to compare the tracking performance of the open loop control and proposed closed-loop model predictive control. Simulation results show that the proposed strategy can reduce 7.86% energy cost compared with the strategy that aims to minimize energy consumption. Moreover, the proposed model predictive control can track reference trajectories better than open loop control under system disturbances.
提出了一种温室气候控制的分级控制策略。提出的分层控制由两层组成(上层和下层)。上层是通过求解优化问题生成设定点。其目标是将分时电价(TOU)下的能源成本降至最低,同时将温室气候(温度、相对湿度和二氧化碳浓度)保持在要求的范围内。下层用来跟踪上层得到的轨迹。设计了模型预测控制器来解决系统的干扰,并与开环控制器的结果进行了比较。引入了相对平均偏差(RAD)这一性能指标来比较开环控制和闭环模型预测控制的跟踪性能。仿真结果表明,与以能耗最小化为目标的策略相比,该策略可降低7.86%的能耗成本。此外,在系统扰动下,模型预测控制比开环控制能更好地跟踪参考轨迹。
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引用次数: 0
Wind Turbine Condition Monitoring Based on Variable Importance of Random Forest 基于随机森林变重要度的风电机组状态监测
Pub Date : 2020-10-23 DOI: 10.1109/IAI50351.2020.9262220
Kai Shi, Chenni Wu, Yuechen Wang, Hai Yu, Zhiliang Zhu
SCADA data lacks sensory data such as vibration and strain measurement for traditional wind turbine condition monitoring; it is updates in low frequency, one piece of data per 10 minutes in the main, which is also low for failure prediction. Thus it is a tough work to monitoring wind turbines' working condition based on SCADA data. To this end, this paper proposes a wind turbine condition monitoring method based on variable importance of random forest by utilizing the SCADA data. First, to minimize the misjudgment caused by individual outliers, we divide the SCADA time series into segments in unit of time period T. Second, we use decrease accuracy method to calculate the variable importance of random forest, as the feature vector of each segment, which characterizes a turbine's condition. Third, we compare a specific turbine's variable importance with the standard feature of healthy turbines to obtain the proximity of them. Fourth, the monitoring baseline is determined according to 3σ, and the deterioration function is applied to construct the failure probability model. To show the effectiveness, we apply the proposed method to four real cases from wind farms in China.
传统的风力机状态监测中,SCADA数据缺乏振动、应变等传感数据;它的更新频率很低,主要是每10分钟更新一条数据,这对于故障预测来说也很低。因此,利用SCADA数据监测风力发电机组的工作状态是一项艰巨的工作。为此,本文利用SCADA数据,提出了一种基于随机森林变重要度的风电机组状态监测方法。首先,为了最大限度地减少单个异常值造成的误判,我们将SCADA时间序列以时间段t为单位分割成多个片段。其次,我们使用降精度法计算随机森林的变量重要度,作为每个片段的特征向量,表征汽轮机的状态。第三,我们将一个特定的涡轮机的可变重要度与健康涡轮机的标准特征进行比较,以获得它们的接近度。第四,根据3σ确定监测基线,并应用劣化函数构建失效概率模型。为了证明该方法的有效性,我们将该方法应用于中国四个风电场的实际案例。
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引用次数: 2
Data Asset Management and Analytics in China High Speed Railways: Challenges and Perspectives 中国高速铁路数据资产管理与分析:挑战与展望
Pub Date : 2020-10-23 DOI: 10.1109/IAI50351.2020.9262186
J. Sun, Z. Yuan, Q. Zhang, X. Dai, D. Cui
With the fast expansion of China's high-speed railway network and the rapid development of information and communication technologies (ICTs) in railways, more and more operation data of the China high-speed railway have been collected and will continue increasing forever. As a valuable asset, the big data of China high-speed railway need effective and dedicated management, which not only helps the railway operators to transform its daily operation to provide better services to passengers, but also has the potential to create new value to the whole industry chain and the stake-holders. The rise of artificial intelligence (AI) and big data technologies open up a new era allowing new application of railway data and the realization of data asset appreciation. This article discusses how AI-driven data management technology may tap and play the value of data assets to convert the value asset of data assets. Since dispatching and transportation are the core business of railways, the data asset management in the new generation of train dispatching system and railway passenger transportation system are investigated from the perspective of the acquisition, analysis and application of China's high-speed railway operation data. Future trends in data analysis technologies and evaluation of data assets are also discussed.
随着中国高速铁路网的快速扩张和铁路信息通信技术(ict)的快速发展,中国高速铁路的运营数据被收集起来越来越多,并将永远增加。中国高铁的大数据作为一种宝贵的资产,需要有效的、专门的管理,这不仅有助于铁路运营商转变其日常运营,为乘客提供更好的服务,而且具有为整个产业链和利益相关者创造新价值的潜力。人工智能和大数据技术的兴起,开启了铁路数据新应用、数据资产增值的新时代。本文探讨了人工智能驱动的数据管理技术如何挖掘和发挥数据资产的价值,转化数据资产的价值资产。由于调度和运输是铁路的核心业务,因此从中国高速铁路运营数据的采集、分析和应用的角度出发,研究新一代列车调度系统和铁路客运系统中的数据资产管理。本文还讨论了数据分析技术和数据资产评估的未来趋势。
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引用次数: 0
Nonlinear vibration control of a flat plate structure using multiple piezoelectric devices 基于多压电器件的平板结构非线性振动控制
Pub Date : 2020-10-23 DOI: 10.1109/IAI50351.2020.9262157
Kazuya Tonomura, M. Deng
In this paper, piezoelectric elements are used to vibration control of a flat plate structure. In order to control vibration more effectively, we propose to divide three piezoelectric actuators into two groups to control the vibration. In details, after describing a mathematical model of the flat plate structure, an operator-based nonlinear control system is designed for the vibration of the trapezoid plate structure. The effectiveness of the proposed method is shown by evaluating the control effect using the coupled analysis tool ANSYS and then comparing the vibration control using two groups of piezoelectric actuators with the previous method by simulation.
本文将压电元件应用于平板结构的振动控制。为了更有效地控制振动,我们建议将三个压电致动器分成两组来控制振动。在建立了平板结构的数学模型后,设计了基于算子的梯形板结构振动非线性控制系统。通过ANSYS耦合分析工具对该方法的控制效果进行了评价,并通过仿真对两组压电致动器的振动控制效果进行了比较,验证了该方法的有效性。
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引用次数: 0
期刊
2020 2nd International Conference on Industrial Artificial Intelligence (IAI)
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