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2021 3rd International Conference on Industrial Artificial Intelligence (IAI)最新文献

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Privacy-Preserving Push-sum Average Consensus Algorithm over Directed Graph Via State Decomposition 基于状态分解的有向图推和平均一致性算法
Pub Date : 2021-11-08 DOI: 10.1109/IAI53119.2021.9619254
Haodong Wang, Wenying Xu, Jianquan Lu
Average consensus is the key basis of distributed collective behaviors of multi-agent systems. Almost all the existing average consensus algorithms require exact values of agents, under which the privacy of nodes is likely to be revealed to honest-but-curious neighbors. In this paper, we are concerned with the average consensus issue without loss of privacy of agents over a general directed network. A privacy-preserving push-sum algorithm is constructed for each agent based on state decomposition, where each agent sends its partial states instead of exact states to its neighbors. Such an algorithm not only guarantees the asymptotic average consensus but also preserves the initial value of each agent from disclosure. Finally, a numerical example is provided to verify the effectiveness of our algorithm.
平均共识是多智能体系统分布式集体行为的关键基础。几乎所有现有的平均共识算法都需要精确的代理值,在这个值下,节点的隐私很可能会被诚实但好奇的邻居泄露。在本文中,我们关注的是在一般有向网络中,agent在不损失隐私的情况下的平均共识问题。在状态分解的基础上,为每个代理构造了一个保护隐私的推和算法,其中每个代理将其部分状态而不是精确状态发送给相邻代理。该算法既保证了各agent的渐近平均共识,又保证了各agent的初始值不被泄露。最后通过一个算例验证了算法的有效性。
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引用次数: 2
Deep Transfer Learning-Based Intelligent Diagnosis of Malignant Tumors on Mammography 基于深度迁移学习的恶性肿瘤乳腺x线影像智能诊断
Pub Date : 2021-11-08 DOI: 10.1109/IAI53119.2021.9619352
Wei Ding, Jin‐Xi Zhang
In this paper, we propose a deep transfer learning-based intelligent diagnosis approach for malignant tumors on mammography. An image segmentation algorithm is developed to remove the background, noise, and other redundancy in the image, for improving the learning efficiency. Based on the GoogleNet after training, we apply the transfer learning technique to the processed image. In this way, the accuracy of the classification model is improved. The experiment results show that the accuracy of our image segmentation algorithm is 100%, using only one-third of the data in training; the accuracy of our training approach is with the highest and average accuracy of 83% and 70%, respectively, by 2 × 104 iterations; and the area under the receiver operating characteristic curve is 0.77. These results are superior to those obtained by the existing methods.
本文提出了一种基于深度迁移学习的乳房x线摄影恶性肿瘤智能诊断方法。为了提高学习效率,提出了一种去除图像背景、噪声和其他冗余的图像分割算法。在训练后的GoogleNet的基础上,将迁移学习技术应用到处理后的图像中。这样可以提高分类模型的准确率。实验结果表明,我们的图像分割算法的准确率为100%,仅使用了训练数据的三分之一;经过2 × 104次迭代,我们的训练方法的准确率最高为83%,平均准确率为70%;接收机工作特性曲线下面积为0.77。这些结果优于现有方法所得到的结果。
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引用次数: 1
Robust FOPID controller design by GWO for position tracking of an EHA System 基于GWO的EHA系统位置跟踪鲁棒FOPID控制器设计
Pub Date : 2021-11-08 DOI: 10.1109/IAI53119.2021.9619319
Qian Shi, Hui Zhang
Hydraulic positioning systems are widely used in the areas of transportation, earth moving equipment, aircraft, and industry machinery with heavy duty applications. In these systems, nonlinear friction as a typical disturbance, is difficult to model and will influence the system performance. In this paper, we investigate the robust fractional-order PID (FOPID) control for position tracking of a fluid power ElectroHydraulic Actuator (EHA) system which is one type of hydraulic positioning systems. Firstly, the EHA model with friction force uncertainty is built. Then, the FOPID controller which is tuned by the grey wolf optimizer (GWO) is proposed. In the goal function for GWO, we take the uncertainty limits of friction force into consideration. The FOPID parameters are obtained by minimizing the goal function. The effectiveness of the proposed control approach is validated by simulation results in Matlab.
液压定位系统广泛应用于运输、土方设备、飞机和重型工业机械等领域。在这些系统中,非线性摩擦作为一种典型的扰动,很难建模,而且会影响系统的性能。研究了一种基于分数阶PID (FOPID)的液压定位系统的位置跟踪控制方法。首先,建立了摩擦力不确定的EHA模型。然后,提出了由灰狼优化器(GWO)进行调谐的FOPID控制器。在GWO的目标函数中,考虑了摩擦力的不确定性极限。通过最小化目标函数得到FOPID参数。仿真结果验证了该控制方法的有效性。
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引用次数: 0
Blow-up phenomenon of parabolic equations with nonlocal terms under Neumann boundary conditions* Neumann边界条件下非局部项抛物方程的爆破现象
Pub Date : 2021-11-08 DOI: 10.1109/IAI53119.2021.9619348
Fanfan Li, Lingling Zhang
In this paper, we focus on a class of parabolic equations with nonlocal terms under Neumann boundary conditions. By making some assumptions, we establish the upper and lower bounds of parabolic equation system with the approach of constructing auxiliary functions and a series of differential inequalities. Moreover, an example is given to illustrate the main results.
在Neumann边界条件下,研究一类具有非局部项的抛物型方程。在一定的假设条件下,利用构造辅助函数和一系列微分不等式的方法,建立了抛物型方程组的上界和下界。并给出了一个算例来说明主要结果。
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引用次数: 0
A Sequentially-Adaptive Deep Variational Model for Multirate Process Anomaly Detection 多速率过程异常检测的顺序自适应深度变分模型
Pub Date : 2021-11-08 DOI: 10.1109/IAI53119.2021.9619404
Zheng Chai, Chunhui Zhao, Youxian Sun
Deep learning based process monitoring methods are attracting increasing research attention in recent years, which generally assume that the process variables are uniformly sampled. In practice, however, the process data are generally collected at multiple different rates, resulting in structurally-incomplete training data. Under such circumstances, how to build effective deep models to fully mine the multirate sampled data has become a constraint in achieving better process monitoring performance. In this paper, a sequentially-adaptive deep variational model is designed in which the knowledge that existed in variables with different rates is comprehensively extracted through deep generative neural networks. The multirate samples are first divided into multiple data blocks in which each block is collected at a uniform rate. A deep generative model is then constructed to model the uncertain data distribution and extract probabilistic feature representations considering the slowness principle. To restrain the small data problem in the blocks with slow rates, a sequentially-adaptation strategy is designed to adapt the knowledge from the fast blocks with sufficient training data and enhance the overall modeling performance. The effectiveness is demonstrated through a real-world industrial thermal power plant case.
基于深度学习的过程监测方法近年来受到越来越多的研究关注,这些方法通常假设过程变量是均匀采样的。然而,在实践中,过程数据通常以多个不同的速率收集,导致结构不完整的训练数据。在这种情况下,如何建立有效的深度模型,充分挖掘多速率采样数据,成为实现更好的过程监控性能的制约因素。本文设计了一种顺序自适应深度变分模型,通过深度生成神经网络综合提取存在于不同速率变量中的知识。首先将多速率样本分成多个数据块,其中每个数据块以统一速率收集。然后构建深度生成模型对不确定数据分布进行建模,并根据慢度原理提取概率特征表示。为了抑制速率慢的块中的小数据问题,设计了一种顺序自适应策略,以适应具有足够训练数据的快速块中的知识,提高整体建模性能。通过实际工业热电厂实例验证了该方法的有效性。
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引用次数: 2
Development of New Efficient Transposed Convolution Techniques for Flame Segmentation from UAV-captured Images 新型高效转置卷积技术在无人机图像火焰分割中的应用
Pub Date : 2021-11-08 DOI: 10.1109/IAI53119.2021.9619442
F. A. Hossain, Youmin Zhang
Although Fully Convolutional Networks (FCNs) have been proven to be a very powerful tool in deep learning-based image segmentation, they are still too computationally expensive to be incorporated into mobile platforms such as Unmanned Aerial Vehicles (UAVs) for real-time performance. While significant efforts have been made to make the encoder side of a FCN more efficient, the decoder side, which involves upsampling the feature maps, is still overlooked in comparison. This paper proposes two new efficient upsampling techniques, “Reversed Depthwise Separable Transposed Convolution (RDSTC)” and “Compression-Expansion Transposed Convolution (CETC)”. U-Net architecture and UAV-captured forest pile fire images have been used to evaluate the performance of these new efficient upsampling techniques. RDSTC and CETC achieve Dice scores of 0.8815 and 0.8832 respectively, outperforming commonly used bilinear interpolation and original transposed convolution, while significantly reducing the number of upsampling computations. The results of this paper demonstrate that upsampling operation in a deep learning architecture can be made more efficient without degradation in performance.
尽管全卷积网络(fcv)已被证明是基于深度学习的图像分割中非常强大的工具,但它们在计算上仍然过于昂贵,无法将其整合到无人机(uav)等移动平台中以实现实时性能。虽然已经做出了巨大的努力来提高FCN的编码器端效率,但涉及特征图上采样的解码器端在比较中仍然被忽视。本文提出了两种新的高效上采样技术:“反向深度可分离转置卷积(RDSTC)”和“压缩-展开转置卷积(CETC)”。使用U-Net架构和无人机捕获的森林堆火图像来评估这些新的高效上采样技术的性能。RDSTC和CETC分别实现了0.8815和0.8832的Dice分数,优于常用的双线性插值和原始转置卷积,同时显著减少了上采样的计算次数。本文的结果表明,深度学习架构中的上采样操作可以在不降低性能的情况下提高效率。
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引用次数: 1
Relative Stability Analysis Method of Systems Based on Goal Seek 基于目标寻的系统相对稳定性分析方法
Pub Date : 2021-11-08 DOI: 10.1109/IAI53119.2021.9619380
Yuan Zhao, Du Ying, Yefeng Liu, Ren Wentao
In the design and analysis of the automatic control system, it is difficult to analyze the relative stability of system because of the complexity of calculating the gain and phase-crossover frequencies. The analysis of the influence of open-loop gain on the relative stability of system needs to solve many more complex equations, which is more difficult. This paper explores a method of system stability analysis based on the goal seek method, and studies the operation steps and points for attention in application of this method. The feasibility and convenience of the method are verified by the analysis of a complex third-order control system. The results show that this method can be used to find out the gain-crossover frequency and the phase-crossover frequency easily, meanwhile the phase margin and gain margin can be obtained easily too. The influence of open-loop gain on them can also be analyzed, and the optimum parameters of open-loop gain can be found. This method will provide a basis for the research of multi-process dynamic collaborative optimization manufacturing under the environment of the workshop Internet of Things.
在自动控制系统的设计和分析中,由于计算增益和相位交叉频率的复杂性,很难分析系统的相对稳定性。分析开环增益对系统相对稳定性的影响需要求解许多更为复杂的方程,难度较大。本文探讨了一种基于目标求法的系统稳定性分析方法,并研究了该方法应用中的操作步骤和注意事项。通过对一个复杂三阶控制系统的分析,验证了该方法的可行性和便捷性。结果表明,该方法可以很容易地求出增益交叉频率和相位交叉频率,同时也可以很容易地求出相位裕度和增益裕度。分析了开环增益对它们的影响,找到了最佳的开环增益参数。该方法将为车间物联网环境下的多工序动态协同优化制造研究提供依据。
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引用次数: 0
Nonlinear Funnel control of calorimetric system considering temperature dependence of thermal conductivity 考虑热导率温度依赖性的量热系统非线性漏斗控制
Pub Date : 2021-11-08 DOI: 10.1109/IAI53119.2021.9619401
Ryo Chikaraishi, M. Deng
This paper proposes a calorimetric measurement system that takes into account the temperature dependence of the thermal conductivity of Peltier devices. Calorimetry is a method to measure the power loss from the amount of heat released from a power conversion device. In this paper, the Peltier device is used as a calorimetric measurement system and the temperature dependence of the thermal conductivity of the Peltier device is focused. By using Funnel Control as the tracking compensator of the control system that takes into account the temperature dependence of the thermal conductivity in the Peltier device, the measurement time of the power loss can be reduced by about 400 s compared with the previous method.
本文提出了一种考虑珀耳帖器件热导率对温度依赖性的量热测量系统。量热法是一种测量功率转换装置释放的热量所造成的功率损耗的方法。本文将珀尔帖器件作为量热测量系统,重点研究了珀尔帖器件导热系数对温度的依赖关系。利用Funnel Control作为控制系统的跟踪补偿器,考虑了Peltier器件中导热系数的温度依赖性,功率损耗的测量时间比之前的方法缩短了约400 s。
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引用次数: 0
H∞ optimal tracking control for remotely operated vehicle 遥控车辆的H∞最优跟踪控制
Pub Date : 2021-11-08 DOI: 10.1109/IAI53119.2021.9619206
Jinyu Liu, Qiuxia Qu, Baolong Yuan, Yupeng Li, Liangliang Sun, Qinghua Shi, Song Bai, Zupeng Xiao
To deal with this problem for tracking the depth-varying trajectory of remotely operated vehicle (ROV), state variables is introduced to system transformation for converting trajectory tracking problem into an optimal control problem. For this system, the H∞ optimal control is added basing on the adaptive dynamic programming algorithm (ADP), and the problem is regarded as the process of a two-player zero-sum differential game. Then we use the critic network to estimate the value function, and propose a online policy iteration algorithm to solve the HJI equation basing on the actor network and the disturbance network. Considering the limited output of the controller, we introduce a non-quadratic functional into the performance index function to solve the saturation problem. By using the Lyapunov stability theorem, we prove that the state of the closed-loop system and the weight estimation error of the neural network are uniformly bounded. Finally, an example is used to prove the feasibility and effectiveness of the method.
为了解决ROV潜器变深轨迹跟踪问题,在系统变换中引入状态变量,将潜器跟踪问题转化为最优控制问题。对于该系统,在自适应动态规划算法(ADP)的基础上增加了H∞最优控制,并将问题视为一个二人零和微分博弈过程。在此基础上,提出了一种基于行动者网络和扰动网络的在线策略迭代算法来求解HJI方程。考虑到控制器输出有限,在性能指标函数中引入非二次泛函来解决饱和问题。利用李雅普诺夫稳定性定理,证明了闭环系统的状态和神经网络的权值估计误差是一致有界的。最后通过一个算例验证了该方法的可行性和有效性。
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引用次数: 0
A Novel Hybrid Short-Term Wind Power Prediction Framework Based on Singular Spectrum Analysis and Deep Belief Network Utilized Improved Adaptive Genetic Algorithm 利用改进的自适应遗传算法,提出了一种基于奇异谱分析和深度信念网络的混合短期风电预测框架
Pub Date : 2021-11-08 DOI: 10.1109/IAI53119.2021.9619284
Weiru Yuan, Zhenhao Tang, Bing Bu, Shengxian Cao
A machine learning based framework involving data-mining method was proposed in this paper. To begin with, a powerful signal decomposition technique (singular spectrum analysis, SSA) was used to divide the original wind sequence into several sub-series to form a potential feature set. Then, the optimal sub-series is screened as the input feature set based on a novel swarm intelligence optimization algorithm (adaptive genetic algorithm based on improved harmony search algorithm, IAGA). Finally, a more appropriate sub-feature set together with the corresponding machine learning model (deep belief network, DBN) were established. A series of simulations is conducted by utilizing actual dataset to validate the proposed method. Comparison results represent that the proposed SSA-IAGA-DBN method achieves high prediction accuracy and robustness in short term wind power prediction tasks.
提出了一种基于机器学习的数据挖掘框架。首先,利用一种强大的信号分解技术(奇异谱分析,SSA)将原始风序列划分为几个子序列,形成一个潜在的特征集。然后,基于一种新的群体智能优化算法(基于改进和谐搜索算法的自适应遗传算法,IAGA)筛选最优子序列作为输入特征集。最后,建立更合适的子特征集和相应的机器学习模型(deep belief network, DBN)。利用实际数据集进行了一系列仿真,验证了所提方法的有效性。对比结果表明,提出的SSA-IAGA-DBN方法在短期风电预测任务中具有较高的预测精度和鲁棒性。
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引用次数: 1
期刊
2021 3rd International Conference on Industrial Artificial Intelligence (IAI)
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