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2018 IEEE 7th Data Driven Control and Learning Systems Conference (DDCLS)最新文献

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A Novel System Decomposition Method Based on Pearson Correlation and Graph Theory* 一种基于Pearson相关和图论的系统分解新方法*
Pub Date : 2018-05-01 DOI: 10.1109/DDCLS.2018.8515967
Jing Jin, Shu Zhang, L. Li, T. Zou
With the increasing attention of networked control, system decomposition and distributed models show significant importance in the implementation of model-based control strategy. In the traditional system decomposition methods based on graph theory, the weight on each edge of the graph is set by state space equation to reflect the mutual influence of variables in the system. But in the actual industrial process, the acquisition of state space equation is more difficult. In this paper, a system decomposition method based on Pearson correlation coefficient and graph theory is proposed to avoid the use of state space equations. At first, a directed graph is established to represent the actual process of the industrial system and the weights on corresponding edges in the directed graph are set by the Pearson correlation coefficients between two nodes connected by these edges. Then the directed graph is decomposed into several initial subgraphs and the subgraphs will be fused according to a certain rule. Here, a fusion index is defined to select the optimal fusion results in each fusion process. After each fusion process, the termination condition is required to determine whether to continue the next round of fusion process. When the fusion process ends, the subsets obtained at this time are the results of the system decomposition. When the system decomposition is finished, the online subsystems modeling will be carried out by RPLS algorithm. Finally, the proposed algorithm is applied in the Tennessee Eastman process to verify the validity.
随着网络控制受到越来越多的关注,系统分解和分布式模型在基于模型的控制策略的实现中显得尤为重要。在传统的基于图论的系统分解方法中,通过状态空间方程来设置图中各边的权值,以反映系统中变量的相互影响。但在实际工业过程中,状态空间方程的获取较为困难。本文提出了一种基于Pearson相关系数和图论的系统分解方法,避免了状态空间方程的使用。首先,建立一个有向图来表示工业系统的实际过程,并通过这些边所连接的两个节点之间的Pearson相关系数来确定有向图中相应边的权值。然后将有向图分解为若干初始子图,并按照一定的规则对子图进行融合。在这里,定义一个融合指数来选择每个融合过程中最优的融合结果。每个融合过程结束后,需要终止条件来确定是否继续下一轮融合过程。当融合过程结束时,此时得到的子集就是系统分解的结果。系统分解完成后,采用RPLS算法对子系统进行在线建模。最后,将该算法应用于田纳西伊士曼过程,验证了算法的有效性。
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引用次数: 2
Convergence Performance of Discrete Power Attracting Law 离散功率吸引律的收敛性能
Pub Date : 2018-05-01 DOI: 10.1109/DDCLS.2018.8515952
Lingwei Wu, Mingxuan Sun, Guang Chen
This paper studies the tracking control of uncertain discrete-time systems, a discrete power attracting law is presented for designing the controller. The system has a faster convergence speed obviously and no chattering phenomenon. A measure of the order O(T 3) disturbance-rejection is embedded in the attracting law, so that the steady-state error (SSE) magnitude of the developed method is of the order O(T 3). In order to characterize the tracking performance, we derive the expressions for the range of the power monotone decreasing (PMD) region, the power absolute attractive (PAA) layer and SSE band. Computer simulation results are given to validate the effectiveness and superiority of the presented control method.
研究了不确定离散系统的跟踪控制问题,提出了一种离散功率吸引律,用于控制器的设计。该系统具有明显较快的收敛速度和无抖振现象。在吸引律中嵌入O(t3)阶抗扰测度,使得所开发方法的稳态误差(SSE)量级为O(t3)阶。为了表征跟踪性能,我们推导了功率单调递减区(PMD)、功率绝对吸引层(PAA)和SSE波段范围的表达式。计算机仿真结果验证了所提控制方法的有效性和优越性。
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引用次数: 2
A State of Charge Estimation Approach Based on Fractional Order Adaptive Extended Kalman Filter for Lithium-ion Batteries 基于分数阶自适应扩展卡尔曼滤波的锂离子电池充电状态估计方法
Pub Date : 2018-05-01 DOI: 10.1109/DDCLS.2018.8516091
Mengen Xu, Qiao Zhu, Meng’qian Zheng
This paper focuses on the state of charge (SOC) estimation of a lithium-ion battery in electric vehicles (EVs) based on a fractional order adaptive extended Kalman filter (FOAEKF). First, a fractional order model (FOM) is introduced to describe the physical behavior of the battery. Then, the parameters of the FOM are identified by a genetic algorithm. The efficiency of the FOM is verified by comparing with the integral order one. After that, a FOAEKF algorithm is developed to deal with the state estimation problem of the FOM. Finally, two dynamic operation conditions are given to show the efficiency of the FOAEKF by comparing with the extended Kalman filter (EKF) for FOM and the adaptive extended Kalman filter (AEKF) for integral order one.
研究了基于分数阶自适应扩展卡尔曼滤波(FOAEKF)的电动汽车锂离子电池荷电状态估计问题。首先,引入分数阶模型(FOM)描述电池的物理行为。然后,利用遗传算法对FOM的参数进行辨识。通过与整阶一的比较,验证了FOM的有效性。在此基础上,提出了一种FOAEKF算法来解决foom的状态估计问题。最后,通过与FOM的扩展卡尔曼滤波(EKF)和积分阶一的自适应扩展卡尔曼滤波(AEKF)进行比较,给出了两种动态运行条件,证明了FOAEKF的有效性。
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引用次数: 6
Sampled-data Control for T-S Fuzzy Systems with Quantized Signals 带有量化信号的T-S模糊系统的采样数据控制
Pub Date : 2018-05-01 DOI: 10.1109/DDCLS.2018.8516042
Xiaojing Han, Ningwei Cheng, Yuechao Ma
This paper deals with the problem of sampled-data control for T-S fuzzy systems with quantized signals. Based on the constructed Lyapunov-Krasovskii functional(LKF), Jensen’s inequality and Free weight matrix, some sufficient conditions are obtained in the form of linear matrix inequalities(LMIs). By combining the input delay approach and dynamic quantizer, the sampled-data controller is designed to guarantee that T-S fuzzy systems with quantized signals is asymptotically stable. Finally, a numerical example is presented to verify the feasibility and effectiveness of the proposed methods.
研究了带有量化信号的T-S模糊系统的采样数据控制问题。基于构造的Lyapunov-Krasovskii泛函(LKF)、Jensen不等式和自由权矩阵,以线性矩阵不等式(lmi)的形式得到了若干充分条件。通过将输入延迟方法与动态量化相结合,设计了采样数据控制器,以保证具有量化信号的T-S模糊系统渐近稳定。最后通过数值算例验证了所提方法的可行性和有效性。
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引用次数: 0
Fixed-Time Stabilization for Interconnected Systems with Discontinuous Interconnections and Nonidentical Perturbations 具有不连续互联和非同摄动的互联系统的定时镇定
Pub Date : 2018-05-01 DOI: 10.1109/DDCLS.2018.8516115
Nannan Rong, Zhanshan Wang, Huaguang Zhang
This paper investigates the fixed-time stabilization issue for a class of nonlinear interconnected systems with discontinuous interconnections and nonidentical perturbations. Firstly, according to the differential inclusion theory, the solutions of such discontinuous interconnected system are defined in the sense of Filippov. In addition, an improved fixed-time lemma, in which the regional bound r can be freely chosen in [0, 1], is proposed to realize the fixed-time stabilization and estimate the settling time. Then, through designing a state feedback controller and utilizing generalized Lyapunov functional method, sufficient criteria are derived to guarantee the fixed-time stabilization of the discontinuous interconnected system. Especially, the upper bound of the convergence time is estimated by a fixed time, which is independent of initial conditions. Finally, the proposed methodology and results are verified by an example.
研究了一类具有不连续互联和非同摄动的非线性互联系统的定时镇定问题。首先,根据微分包含理论,在Filippov意义上定义了这类不连续互联系统的解。此外,提出了一种改进的固定时间引理,其中区域界r可在[0,1]中自由选择,以实现固定时间镇定并估计沉降时间。然后,通过设计状态反馈控制器,利用广义Lyapunov泛函方法,得到了保证不连续互联系统定时镇定的充分判据。特别地,收敛时间的上界由一个固定的时间估计,它与初始条件无关。最后,通过一个算例验证了所提出的方法和结果。
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引用次数: 0
Design optimization of Permanent Magnet Brushless Direct Current Motor using Radial Basis Function Neural Network 基于径向基函数神经网络的永磁无刷直流电机优化设计
Pub Date : 2018-05-01 DOI: 10.1109/DDCLS.2018.8515983
Darong Sorn, Yong Chen
This paper is about a methodology for the optimization of a Permanent Magnet Brushless Direct Current (PM-BLDC) motor. The most advantage of this proposed method is its mathematical modeling effectiveness. In specific, it is focused on multi-objective optimization by using a Radial Basis Function (RBF) Neural Network simulated in the Matlab environment. The aim of this optimization process was to maximize the efficiency and to minimize the permanent magnet mass, active mass, and volume of the motor. In order to verify results, two-dimensional models were developed and thoroughly analyzed using Finite Element Analysis (FEA) in Ansys-Maxwell. Moreover, the comparison of the RBFNN and Genetic Algorithm (GA) results were also figured out and the comparison showed that the RBFNN has better ability in finding the optimal solutions and also has less computational time than GA.
本文研究了永磁无刷直流(PM-BLDC)电机的优化方法。该方法最大的优点是其数学建模的有效性。具体来说,主要是利用在Matlab环境下仿真的径向基函数(RBF)神经网络进行多目标优化。该优化过程的目的是使效率最大化,并使电机的永磁体质量、有效质量和体积最小。为了验证结果,建立了二维模型,并使用Ansys-Maxwell中的有限元分析(FEA)进行了全面分析。并将RBFNN与遗传算法(Genetic Algorithm, GA)的结果进行了比较,结果表明RBFNN比遗传算法(Genetic Algorithm)具有更好的寻优能力和更少的计算时间。
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引用次数: 3
Online Semi-supervised Quality Prediction Model for Batch Mixing Process 间歇混合过程的在线半监督质量预测模型
Pub Date : 2018-05-01 DOI: 10.1109/DDCLS.2018.8516014
Mingtao Zhang, Bocheng Chen, You Wu, Wei-wei Deng, Xuelei Zhang, Yi Liu
Current soft sensors for the Mooney viscosity prediction in rubber mixing processes only utilized the limited labeled data. By exploring the unlabeled data, a novel soft sensor, namely just-in-time semi-supervised extreme learning machine (JSELM), is presented to online predict the Mooney viscosity with multiple recipes. It integrates the just-in-time learning, extreme learning machine (ELM), and the graph Laplacian regularization into a unified online modeling framework. When a test sample is inquired online, the useful information in both of similar labeled and unlabeled data is absorbed into the JSELM model to enhance its prediction performance. Moreover, an efficient model selection strategy is formulated for online construction of the JSELM prediction model. The superiority of JSELM is validated via the industrial Mooney viscosity prediction.
目前用于橡胶混合过程中穆尼粘度预测的软传感器仅利用有限的标记数据。通过对未标记数据的探索,提出了一种新的软传感器,即即时半监督极限学习机(JSELM),用于在线预测多种配方的Mooney粘度。它将即时学习、极限学习机(ELM)和图拉普拉斯正则化集成到一个统一的在线建模框架中。当在线查询测试样本时,将相似标记和未标记数据中的有用信息吸收到JSELM模型中,以提高其预测性能。为在线构建JSELM预测模型,提出了一种高效的模型选择策略。通过工业穆尼粘度预测验证了JSELM的优越性。
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引用次数: 0
An Iterative Learning Controller for Superheat Degree of VCC System VCC系统过热度的迭代学习控制器
Pub Date : 2018-05-01 DOI: 10.1109/DDCLS.2018.8516037
Xiaohong Yin, Xinli Wang, Ximei Liu, R. Chi, Mingming Lin, Fanglin Liu
The air-conditioning system has played an indispensable role in daily life, which can provide a comfortable and healthy residential environment for people. The vapor compressor refrigeration cycle (VCC) system, one of the core cycles of HVAC system, produces a cooling effect. In this research, an iterative learning control (ILC) strategy is proposed for the VCC system. In the first place, the least-square method of system identification has been adopted to obtain a data driven model. Moreover, in order to hold superheat degree of VCC system on a safe level, an ILC controller is developed. Finally, a simulation is provided to test the validity of the proposed controller.
空调系统在人们的日常生活中发挥着不可或缺的作用,它能为人们提供舒适健康的居住环境。蒸汽压缩机制冷循环(VCC)系统是暖通空调系统的核心循环之一,产生制冷效果。本研究针对VCC系统提出一种迭代学习控制策略。首先,采用系统辨识的最小二乘法得到数据驱动模型;此外,为了使VCC系统的过热度保持在安全水平,设计了一种ILC控制器。最后,通过仿真验证了所提控制器的有效性。
{"title":"An Iterative Learning Controller for Superheat Degree of VCC System","authors":"Xiaohong Yin, Xinli Wang, Ximei Liu, R. Chi, Mingming Lin, Fanglin Liu","doi":"10.1109/DDCLS.2018.8516037","DOIUrl":"https://doi.org/10.1109/DDCLS.2018.8516037","url":null,"abstract":"The air-conditioning system has played an indispensable role in daily life, which can provide a comfortable and healthy residential environment for people. The vapor compressor refrigeration cycle (VCC) system, one of the core cycles of HVAC system, produces a cooling effect. In this research, an iterative learning control (ILC) strategy is proposed for the VCC system. In the first place, the least-square method of system identification has been adopted to obtain a data driven model. Moreover, in order to hold superheat degree of VCC system on a safe level, an ILC controller is developed. Finally, a simulation is provided to test the validity of the proposed controller.","PeriodicalId":6565,"journal":{"name":"2018 IEEE 7th Data Driven Control and Learning Systems Conference (DDCLS)","volume":"9 1","pages":"949-953"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81987417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ensemble of Extreme Learning Machines for Regression 回归的极限学习机集合
Pub Date : 2018-05-01 DOI: 10.1109/DDCLS.2018.8515915
Atmane Khellal, Hongbin Ma, Qing Fei
Regression, as a particular task of machine learning, performs a vital part in data-driven modeling, by finding the connections between the system state variables without any explicit knowledge about the system, using a collection of input-output data. To enhance the prediction performance and maximize the training speed, we propose a fully learnable ensemble of Extreme Learning Machines (ELMs) for regression. The developed approach learns the combination of different individual models, using the ELM algorithm, which is applied to minimize both the prediction error and the norm of the network parameters, which leads to higher generalization performance under Bartlett’s theory. Moreover, the average based ELM ensemble may be viewed as a particular case of our model. Extensive experiments on many standard regression benchmark datasets have been carried out, and comparison with different models has been performed. The experimental findings confirm that the proposed ensemble can reach competitive results in term of the generalization performance, and the training speed. Furthermore, the influence of different hyperparameters on the performance, in term of the prediction error and the training speed, of the developed model has been investigated to provide a meaningful guideline to practical applications.
回归作为机器学习的一项特殊任务,在数据驱动的建模中发挥着至关重要的作用,它通过使用一组输入输出数据,在没有任何关于系统的明确知识的情况下,找到系统状态变量之间的联系。为了提高预测性能和最大限度地提高训练速度,我们提出了一个完全可学习的极限学习机(elm)集合用于回归。该方法使用ELM算法学习不同个体模型的组合,该算法用于最小化网络参数的预测误差和范数,从而在Bartlett理论下获得更高的泛化性能。此外,基于平均的ELM集成可以看作是我们模型的一个特殊情况。在许多标准回归基准数据集上进行了大量实验,并与不同模型进行了比较。实验结果表明,该方法在泛化性能和训练速度上都达到了较好的效果。此外,研究了不同超参数对模型预测误差和训练速度的影响,为实际应用提供了有意义的指导。
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引用次数: 3
Data-driven Adaptive Iterative Learning Control Based on a Local Dynamic Linearization 基于局部动态线性化的数据驱动自适应迭代学习控制
Pub Date : 2018-05-01 DOI: 10.1109/DDCLS.2018.8516008
Shuhua Zhang, Yu Hui, R. Chi
Linearization technique is inevitable for a nonlinear control system design. However, the traditional linearization methods require model information, which is difficult to obtain for the complex nonlinear system. In this article, a new local dynamic linearization method is proposed via a mean-value theorem and can be estimated by using the I/O data only. Then a new adaptive iterative learning control is proposed by using the optimal technology. The simulation verifies the monotonic convergence and practicability of this method.
对于非线性控制系统的设计,线性化技术是不可避免的。然而,传统的线性化方法需要模型信息,对于复杂的非线性系统难以获得模型信息。本文利用中值定理提出了一种新的局部动态线性化方法,该方法可以仅使用I/O数据进行估计。然后利用最优技术提出了一种新的自适应迭代学习控制方法。仿真结果验证了该方法的单调收敛性和实用性。
{"title":"Data-driven Adaptive Iterative Learning Control Based on a Local Dynamic Linearization","authors":"Shuhua Zhang, Yu Hui, R. Chi","doi":"10.1109/DDCLS.2018.8516008","DOIUrl":"https://doi.org/10.1109/DDCLS.2018.8516008","url":null,"abstract":"Linearization technique is inevitable for a nonlinear control system design. However, the traditional linearization methods require model information, which is difficult to obtain for the complex nonlinear system. In this article, a new local dynamic linearization method is proposed via a mean-value theorem and can be estimated by using the I/O data only. Then a new adaptive iterative learning control is proposed by using the optimal technology. The simulation verifies the monotonic convergence and practicability of this method.","PeriodicalId":6565,"journal":{"name":"2018 IEEE 7th Data Driven Control and Learning Systems Conference (DDCLS)","volume":"24 1","pages":"184-188"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84846716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
期刊
2018 IEEE 7th Data Driven Control and Learning Systems Conference (DDCLS)
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