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2019 IEEE 8th Data Driven Control and Learning Systems Conference (DDCLS)最新文献

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Formation Control of Heterogeneous Multi-Agent Systems with Time-Delay Based on Output Regulation 基于输出调节的异构时滞多智能体系统编队控制
Pub Date : 2019-05-01 DOI: 10.1109/DDCLS.2019.8909081
Xiaoyang Meng, Yajiang Du, Zonggang Li, Yinjuan Chen
This note considers the formation control of heterogeneous multi-agent systems with time delay, in which all agents are divided into a leader and followers. Here, the output regulation method is employed such that followers track the leader and finally converge to a desired formation as there exists communication time-delay. For this purpose, a distributed observer is proposed for each follower to estimate the state of the leader, and then employ a feedback controller to update its states. As the distances among followers and leader are predefined, we have shown that the considered heterogeneous multi-agent systems with time-delay can achieve the desired formation. Simulation example is included to illustrate the validity of the proposed method.
本文研究具有时滞的异构多智能体系统的编队控制问题,其中所有的智能体都被划分为领导者和追随者。在这里,由于存在通信时延,采用输出调节方法使follower跟踪leader,最终收敛到期望的队列。为此,提出了每个follower的分布式观测器来估计leader的状态,然后使用反馈控制器来更新其状态。由于follower和leader之间的距离是预定义的,我们已经证明了所考虑的具有时滞的异构多智能体系统可以实现期望的队形。最后通过仿真实例验证了该方法的有效性。
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引用次数: 0
The Analysis of Stator System Natural Frequency Calculation Method on Transverse Flux Permanent Magnet Motor 横向磁通永磁电机定子系统固有频率计算方法分析
Pub Date : 2019-05-01 DOI: 10.1109/DDCLS.2019.8908867
Wei Wang, Hao Zhang
The stator and armature coils of the transverse flux permanent magnet motor are perpendicular to each other in space. Its core size and coil size are independent of each other, size can be arbitrarily selected in a certain range. Thus the high torque density is suitable for some special occasions. First of all, the finite element build accurate stator system model. Secondly we calculated modal of the motor, according to the results of calculation analysis concluded that the stator system analytic calculation of the equivalent model. The above work has been the calculation formula of the stator system natural frequency that provide calculation basis for transverse flux motor vibration noise analysis.
横磁永磁电机的定子线圈和电枢线圈在空间上相互垂直。它的铁芯尺寸和线圈尺寸是相互独立的,尺寸可以在一定范围内任意选择。因此,高扭矩密度适用于一些特殊场合。首先,用有限元法建立准确的定子系统模型。其次对电机进行模态计算,根据计算分析结果得出定子系统解析计算的等效模型。得到了定子系统固有频率的计算公式,为横向磁通电机振动噪声分析提供了计算依据。
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引用次数: 0
Multiple Blockage Identification of Drainage Pipeline Based on VMD Feature Fusion and Support Vector Machine 基于VMD特征融合和支持向量机的排水管道多堵塞识别
Pub Date : 2019-05-01 DOI: 10.1109/ddcls.2019.8908968
Fei Wang, Zao Feng, Guoyong Huang, Xuefeng Zhu, Yang Li
Aiming at the detection problem of Multiple blockage in urban water supply pipelines and drainage pipelines, also the problem of distinguishing commonly used pipe components such as lateral connection from the actual blocking conditions. A multiple-blocking fault identification method based on support vector machine (SVM) combined with a feature extraction approach for component signal are proposed in this paper. Firstly, the variational mode decomposition (VMD) was applied on the acoustic signals collected in the pipeline to obtain a set of finite bandwidth natural mode functions (IMF), multiple time domain indices and center frequencies were extracted as features, then a feature vector set can be constructed and input into the SVM classifier. The experimental results have shown that the method based on VMD feature fusion and support vector machine can effectively identify the multiple congestion faults of drainage pipelines. In addition, the method was compared with back propagation (BP)neural network and the k-nearest neighbor algorithm (KNN). The results suggest that the proposed method has a better performance on the partial blockage recognition with a small number of training samples.
针对城市给排水管道多重堵塞的检测问题,以及横向连接等常用管道构件与实际堵塞情况的区分问题。提出了一种基于支持向量机的多块故障识别方法,并结合特征提取方法对部件信号进行识别。首先对管道中采集的声信号进行变分模态分解(VMD),得到一组有限带宽的自然模态函数(IMF),提取多个时域指标和中心频率作为特征,然后构造特征向量集并输入SVM分类器;实验结果表明,基于VMD特征融合和支持向量机的方法可以有效地识别排水管道的多个堵塞故障。并将该方法与BP神经网络和k近邻算法进行了比较。结果表明,该方法在训练样本较少的情况下具有较好的部分阻塞识别性能。
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引用次数: 1
Fault Diagnosis of Check Valve Based on WVD and NMF 基于WVD和NMF的单向阀故障诊断
Pub Date : 2019-05-01 DOI: 10.1109/ddcls.2019.8909082
Jihui Luo, Guoyong Huang, Jun Ma
This paper proposes a check valve fault diagnosis method based on time-frequency images and Non-negative Matrix Factorization (NMF), which transforms the fault features extraction of time domain signals into fault features extraction of time-frequency images. Firstly, the vibration signals of the check valve are decomposed by Differential Empirical Mode Decomposition (DEMD), and the Intrinsic Mode Functions (IMFs) containing more feature information are selected to reconstruct the signals by correlation coefficient method. Secondly, Wigner-Ville Distribution (WVD) is used to analysis the reconstruct signals and obtain the time-frequency images, then NMF is applied to decompose the time-frequency image matrixes and get the feature matrix. Finally, the feature vectors are classified via the Support Vector Machine (SVM) which is optimized by Genetic Algorithm (GA) to complete the fault diagnosis of the high pressure diaphragm pump check valve. The method is validated using data from three operating states of the high pressure diaphragm pump check valve. The experimental result shows that the proposed method can effectively extract the fault features and identify fault types of the check valve. The average classification accuracy rate is up to 99.17%, which is higher than using the time domain and frequency domain features as input.
提出了一种基于时频图像和非负矩阵分解(NMF)的单向阀故障诊断方法,将时域信号的故障特征提取转化为时频图像的故障特征提取。首先,采用差分经验模态分解(DEMD)对单向阀振动信号进行分解,选取包含较多特征信息的本征模态函数(IMFs),采用相关系数法对信号进行重构;其次,利用WVD (Wigner-Ville Distribution)对重构信号进行分析,得到时频图像,然后利用NMF对时频图像矩阵进行分解,得到特征矩阵;最后,通过遗传算法优化的支持向量机(SVM)对特征向量进行分类,完成高压隔膜泵单向阀的故障诊断。用高压隔膜泵止回阀三种工作状态的数据对该方法进行了验证。实验结果表明,该方法能有效地提取单向阀故障特征,识别故障类型。平均分类准确率达到99.17%,高于使用时域和频域特征作为输入的分类准确率。
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引用次数: 0
Proportional Derivative Observer Design for Nonlinear Singular Systems 非线性奇异系统的比例导数观测器设计
Pub Date : 2019-05-01 DOI: 10.1109/DDCLS.2019.8909031
Yunfei Mu, Zilong Tan, Huaguang Zhang, Juan Zhang
This paper focuses on proportional derivative observer design for a class of Takagi-Sugeno fuzzy singular systems. According to the available knowledge on premise variables, first, observer design with known premise variables is considered, and explicit parametrization of the desired observer is also given. Moreover, observer design with unknown premise variables is further investigated. Some new conditions, which guarantee the error system to be robust stability, are derived. All the stability criterions are presented in linear matrix inequalities framework, which can be conveniently verified via Matlab. Finally, two illustrative examples are simulated to illustrate the correctness of the present schemes.
研究了一类Takagi-Sugeno模糊奇异系统的比例导数观测器设计。根据已知的前提变量知识,首先考虑了已知前提变量下的观测器设计,并给出了期望观测器的显式参数化。进一步研究了未知前提变量下的观测器设计问题。给出了保证误差系统鲁棒稳定的一些新条件。所有的稳定性判据都在线性矩阵不等式框架中给出,可以方便地通过Matlab进行验证。最后,通过两个实例的仿真验证了所提方案的正确性。
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引用次数: 2
Location and Recognition System for Lightning Fault of Transmission Line Based on Data-driven Technology 基于数据驱动技术的输电线路雷电故障定位与识别系统
Pub Date : 2019-05-01 DOI: 10.1109/DDCLS.2019.8909010
Rui Li, Rongmin Cao, Yingnian Wu, Di Yu
In order to solve the complex and difficult identification problems of overhead transmission line fault diagnosis, and to improve the accuracy of classification effectively, a new method of fault diagnosis for overhead transmission line is proposed in this paper. Firstly, the collected traveling wave signals are processed by HHT (Hilbert-Huang Transform) to realize joint feature extraction in time-frequency domain. And a data-driven lightning strike warning model for transmission lines is adopted. The model includes PCA (principal component analysis), data acquisition and preprocessing, data analysis and prediction, and model online correction. For eliminating the influence of noise and singularity on fault diagnosis; then input training set and production rules to train the intelligent classification method, by which exact fault diagnosis model was obtained. Finally, apply the algorithm to the intelligent lightning traveling wave monitoring system of an actual 500 kV transmission line, the experimental results show that the proposed method can not only calculate the exact location of fault points, but also accurately classified them that classified both single fault and multi-fault, which opens up a new approach for overhead transmission line to intelligent fault diagnosis.
为了解决架空输电线路故障诊断中复杂、困难的识别问题,有效提高分类的准确率,本文提出了一种新的架空输电线路故障诊断方法。首先,对采集到的行波信号进行HHT (Hilbert-Huang Transform)处理,实现时频域联合特征提取;采用数据驱动的输电线路雷击预警模型。该模型包括主成分分析(PCA)、数据采集与预处理、数据分析与预测、模型在线修正。消除噪声和奇异性对故障诊断的影响;然后输入训练集和生成规则对智能分类方法进行训练,得到准确的故障诊断模型。最后,将该算法应用于实际500kv输电线路雷电行波智能监测系统,实验结果表明,该方法不仅能准确计算出故障点的准确位置,而且能对故障点进行准确的分类,可分为单故障和多故障,为架空输电线路智能故障诊断开辟了一条新途径。
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引用次数: 0
Iterative Learning Control for Linear Fractional-Order Distributed Parameter Systems with Variable Tracking Trajectory 变跟踪轨迹线性分数阶分布参数系统的迭代学习控制
Pub Date : 2019-05-01 DOI: 10.1109/DDCLS.2019.8908905
X. Dai, Fan Zhang, Tingting Zhao
This paper studies the problem of iterative learning control for a linear fractional-order distributed parameter systems with variable tracking trajectory. An improved P-type updating control law is employed to estimate the spatial-temporal varying curve surface iteratively. Then, the sufficient conditions of convergence for output error of the system in the sense of $L_{2}$ norm has been revised through rigorous analysis. The numerical results show the effectiveness of the proposed ILC scheme.
研究了具有可变跟踪轨迹的线性分数阶分布参数系统的迭代学习控制问题。采用改进的p型更新控制律对时空变化曲面进行迭代估计。然后,通过严格的分析,修正了系统在$L_{2}$范数意义下输出误差收敛的充分条件。数值结果表明了所提出的ILC方案的有效性。
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引用次数: 1
High-Order Internal Model Based Indirect-Type Iterative Learning Control Design for Batch Processes with Batch-Varying Factors 含批变因素的批处理过程的高阶内模型间接学习控制设计
Pub Date : 2019-05-01 DOI: 10.1109/DDCLS.2019.8909054
Shoulin Hao, Tao Liu
This paper proposes a high-order internal model (HOIM) based indirect-type iterative learning control (ILC) scheme for batch processes subject to batch-varying initial condition and reference along with external disturbance. A widely used proportional-integral (PI) control structure in practical applications is taken as the inner loop, while the set-point related indirect-type ILC updating law is designed independent of the inner loop to robustly track the desired output trajectory. In comparison with the existing indirect-type ILC methods, the set-point commands and output tracking errors over more than one previous batches are used for the ILC design in terms of an augmented HOIM associated with the initial process state, reference, and external disturbance. By using an equivalent 2D Roesser system description of the closed-loop ILC system, a sufficient condition in terms of linear matrix inequality is established to ensure asymptotic stability of the resulting 2D system together with a 2D $mathcal{H}_{infty}$ performance under non-zero boundary conditions. Finally, the obtained results are validated by an illustrative example of injection molding.
提出了一种基于高阶内模(HOIM)的初始条件和参考条件随外部干扰变化的批量过程间接迭代学习控制(ILC)方案。采用实际应用中广泛使用的比例积分(PI)控制结构作为内环,设计了独立于内环的与设定点相关的间接型ILC更新律,以鲁棒跟踪期望输出轨迹。与现有的间接型ILC方法相比,在与初始过程状态、参考和外部干扰相关的增强HOIM方面,ILC设计使用了多个先前批次的设定点命令和输出跟踪误差。利用闭环ILC系统的等效二维Roesser系统描述,建立了以线性矩阵不等式表示的二维系统在非零边界条件下的渐近稳定性和二维$mathcal{H}_{infty}$性能的充分条件。最后,通过注射成型算例验证了所得结果。
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引用次数: 0
A Multi-class Classification Algorithm Based on Hypercube 一种基于超立方体的多类分类算法
Pub Date : 2019-05-01 DOI: 10.1109/DDCLS.2019.8908878
Yu-ping Qin, Yuanyue Zhao, Xiangna Li, Q. Leng
A multi-class classification algorithm based on hypercube is proposed. For each class of training samples, a minimum hypercube that surround all samples is constructed in sample space. If two hypercubes intersect, the hypercube centers are used as the benchmark for compression. For a sample to be classified, its class label is determined according to the hypercube in which it is located. If this sample is not in any hypercube, the distances from the sample to the center of each hypercube are calculated firstly, and then the class label is determined by the nearest neighbor rule. The experimental results show that the training speed and classification speed of the proposed algorithm are improved significantly while ensuring the classification accuracy, especially in the case of large dataset and large number of classes.
提出了一种基于超立方体的多类分类算法。对于每一类训练样本,在样本空间中构造一个围绕所有样本的最小超立方体。如果两个超立方体相交,则使用超立方体中心作为压缩的基准。对于要分类的样本,其类标签是根据其所在的超立方体确定的。如果该样本不在任何超立方体中,则首先计算样本到每个超立方体中心的距离,然后根据最近邻规则确定类标号。实验结果表明,在保证分类精度的前提下,该算法的训练速度和分类速度均有显著提高,特别是在大数据集和大量分类的情况下。
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引用次数: 1
Consensus Tracking of Linear Multi-Agent Systems With Exogenous Disturbances 具有外源干扰的线性多智能体系统的一致性跟踪
Pub Date : 2019-05-01 DOI: 10.1109/DDCLS.2019.8909027
Tongshu Wang, Xuxi Zhang
This paper investigates the problem of consensus tracking for linear multi-agent systems with exogenous disturbances, which the disturbances are generated by linear external exosystems. To solve consensus tracking problem, a distributed adaptive controller for each follower has been considered. For the exogenous disturbances caused by the external systems, a disturbance observer is designed to deal with exogenous disturbances. Supposing that the communication graph among followers is undirected. Then, by applying the Lyapunov function method, the consensus tracking problem with exogenous disturbances was proved. Finally, a simulation is given to illustrate the effectiveness of our results.
研究了具有外生扰动的线性多智能体系统的共识跟踪问题,该系统的扰动是由线性外部系统产生的。为了解决一致性跟踪问题,考虑了每个follower的分布式自适应控制器。对于外部系统引起的外生扰动,设计了扰动观测器来处理外生扰动。假设追随者之间的通信图是无向的。然后,应用Lyapunov函数方法,证明了具有外源干扰的一致性跟踪问题。最后,通过仿真验证了所得结果的有效性。
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引用次数: 2
期刊
2019 IEEE 8th Data Driven Control and Learning Systems Conference (DDCLS)
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