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

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Modeling and Dynamic Simulation of TI Worm Drivebased on GearTrax 基于GearTrax的TI蜗杆传动建模与动态仿真
Pub Date : 2019-05-01 DOI: 10.1109/DDCLS.2019.8909061
Jianghua Pu, Xuejun Wang, Peng Wu, H. San, Mingfang Chen
Rail transport conveyer is a kind of special transportation equipment commonly used in the metallurgical industry. One of the crucial reasons leading to the inefficient/poor reliability and low kinetic accuracy of rail transport conveyer is closely related to the transmission system. A precise three-dimension solid model of the TI worm and worm gear is established, which serves as the main transmission structure is built with GearTrax and Solid Edge. ADAMS simulation analytic software is utilized to conduct kinematic simulation analysisthrough inputting modeling of worm transmission structure in rail transport lifting system with Hertz contact theory, and the change rules of driven link bevel tooth rotation speed and worm and gear engaging force are obtained and analyzed. Therefore, it has improved the reliability and efficiency of rail transport conveyer transmission system, and a reference method is provided for 3D solid modeling of TI worm transmission and the dynamics modeling and analysis of worm and gear transmission mechanism.
轨道运输输送机是冶金工业中常用的一种特种运输设备。轨道运输输送机效率低、可靠性差、运动精度低等问题的关键原因之一与输送系统密切相关。建立了TI蜗杆和蜗轮的精密三维实体模型,并利用GearTrax和solid Edge软件建立了TI蜗杆和蜗轮作为主要传动结构的实体模型。利用ADAMS仿真分析软件,利用赫兹接触理论对轨道运输提升系统蜗杆传动结构进行建模,进行运动学仿真分析,得到并分析了从动连杆锥齿转速和蜗杆与齿轮啮合力的变化规律。因此,提高了轨道运输输送机传动系统的可靠性和效率,为TI蜗杆传动的三维实体建模和蜗杆齿轮传动机构的动力学建模与分析提供了参考方法。
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引用次数: 1
An Improved Kalman Filter Based on Self-adaptive Adjustment Parameters 基于自适应参数调整的改进卡尔曼滤波
Pub Date : 2019-05-01 DOI: 10.1109/DDCLS.2019.8909000
Shenglun Yi, X. Ren, Tingli Su
This paper considers an improved Kalman filter (KF) for a non-Gaussian system, when an adaptive statistics model is applied to capture the systematic characteristics in real time. The problem is formulated as self-adaptive adjustment parameters (SAPs) updating by the recursive least squares (RLS) algorithm. These parameters are shown to admit adaptive statistics model to characteristics of which applies and extends results given earlier in “Online denoising based on the second-order adaptive statistics model” (S. L. Yi and X. B. Jin et al., Sensors, 17(7), 1668, 2017.). Simulations comparing the improved KF based on the SAPs to the standard KF and the past algorithm illustrate a satisfactory performance when applied to self-adaptive adjustment parameters. Simulation results show that the proposed algorithm can gradually converge with a small performance loss.
本文研究了一种用于非高斯系统的改进卡尔曼滤波器(KF),该滤波器采用自适应统计模型来实时捕捉系统特征。将该问题表述为用递归最小二乘(RLS)算法更新自适应调整参数。这些参数表明,自适应统计模型的特征适用并扩展了前面“基于二阶自适应统计模型的在线去噪”中给出的结果(S. L. Yi和X. B. Jin等人,传感器,17(7),1668,2017)。将基于SAPs的改进KF算法与标准KF算法和过去的算法进行了仿真比较,结果表明,在自适应调整参数时,改进的KF算法具有令人满意的性能。仿真结果表明,该算法能以较小的性能损失逐步收敛。
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引用次数: 0
Finite-Time Surrounding Control of Multi-Agent Systems with Multiple Targets 多目标多智能体系统的有限时间周边控制
Pub Date : 2019-05-01 DOI: 10.1109/DDCLS.2019.8909083
Li Zhang, Zonggang Li, Pu Gao
We investigate the circle surrounding control problem of multiple targets, in which communication topology is undirected and connected. First of all, an estimator is given for each agent to obtain the geometric center of multiple targets in a finite time. Combined with such an estimator, a distributed controller is presented such that all agents can achieve a circular formation and rotate around the geometric center of multiple targets. Meanwhile, agents enclose all targets. Especially, the position of each agent in circular formation can be arbitrary arranged by adjusting the time-varying coefficients. Simulations demonstrate the correctness of the estimator and the surrounding control protocol.
研究了通信拓扑为无向连接的多目标环绕控制问题。首先,给出了每个agent在有限时间内获取多个目标几何中心的估计量;结合该估计量,提出了一种分布式控制器,使所有智能体都能形成圆形,并围绕多个目标的几何中心旋转。同时,特工包围所有目标。特别是,通过调整时变系数,可以任意安排各agent在圆形队列中的位置。仿真结果验证了该估计器和控制协议的正确性。
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引用次数: 3
K-Filter Observer Based Optimal Robust Guarantee Cost Control for Uncertain Nonlinear Servo System with Immeasurable States 基于k滤波观测器的状态不可测不确定非线性伺服系统最优鲁棒保证代价控制
Pub Date : 2019-05-01 DOI: 10.1109/DDCLS.2019.8908890
Minlin Wang, Xueming Dong, X. Ren
In this paper, a K-filter observer based optimal robust guarantee cost controller is proposed for uncertain nonlinear servo system with immeasurable states to achieve the precision load tracking. By using a K-filter observer to estimate both the system states and the nonlinearities, an adaptive dynamic surface control is designed to make the system output track a given reference command. However, since the parameter uncertainties may influence the system tracking performance, an optimal robust guarantee cost control is developed to combine with the adaptive dynamic surface control to stabilize the uncertain system and guarantee the system cost function less than or equal to a given upper bound. The Lyapunov theory proves the stability of the closed-loop control system. Simulation results based on a servo system are conducted to illustrate the efficiency of the proposed control scheme.
针对状态不可测的不确定非线性伺服系统,提出了一种基于k滤波器观测器的最优鲁棒保证代价控制器,以实现系统负载的精确跟踪。通过使用k滤波器观测器估计系统状态和非线性,设计了一种自适应动态曲面控制,使系统输出跟踪给定的参考命令。然而,由于参数的不确定性会影响系统的跟踪性能,提出了一种最优鲁棒保证代价控制方法,结合自适应动态面控制,使不确定系统稳定,并保证系统代价函数小于或等于给定的上界。李雅普诺夫理论证明了闭环控制系统的稳定性。基于伺服系统的仿真结果验证了所提控制方案的有效性。
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引用次数: 0
Cyclic Loading Test Facility for Ballast Bed of High-speed Railway 高速铁路道床循环加载试验装置
Pub Date : 2019-05-01 DOI: 10.1109/DDCLS.2019.8908874
Xuejun Wang, Jianghua Pu, Peng Wu, H. San, Mingfang Chen
In this paper, a new full-scale indoor ballasted ballast bed cyclic loading test-bed is introduced. Based on the actual operation of high-speed train, the corresponding relationship between the simulation parameters of loading process and the actual operation parameters is analyzed, and the hydraulic transmission and control system of the cyclic loading test-bed, which can simulate the actual operation of vehicles are designed. According to the simulated parameters and test methods of the cyclic loading test bench, the hydraulic circuit is built, and the electro-hydraulic proportional key technology is used to precisely control the hydraulic circuit. The principle and characteristics of the hydraulic system of the test-bed are emphatically expounded, and the performance of the test model is verified by comparing the test results.
本文介绍了一种新型全尺寸室内有碴压载床循环加载试验台。基于高速列车的实际运行,分析了加载过程仿真参数与实际运行参数之间的对应关系,设计了能够模拟车辆实际运行的循环加载试验台液压传动与控制系统。根据循环加载试验台的仿真参数和试验方法,搭建液压回路,采用电液比例关键技术对液压回路进行精确控制。着重阐述了试验台液压系统的工作原理和特点,并通过对比试验结果验证了试验模型的性能。
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引用次数: 0
Non-Cooperative Flying-around Mission:Configuration Design, Relative Navigation and Control 非合作绕飞任务:构型设计、相对导航与控制
Pub Date : 2019-05-01 DOI: 10.1109/DDCLS.2019.8908919
Yaru Zheng, Jinfeng Zhou, Ming Xu
This paper studies configuration design, relative navigation and control of non-cooperative flying-around mission $J_{4}$-perturbed elliptic orbit. $J_{2}$-perturbation is generally considered in most circumstances of satellites around the Earth, while the relative motion is under $J_{4}$-pertuabation to achieve more precise results. The key problem of flying-around mission is orbital control, a more general method is established which considers remote maneuvers, reconfiguration, flying-around and escape. Based on the orbital control in the paper, the initial conditions of object and tracking satellite are as appropriate but not unique. The Extended Kalman Filter is introduced to enhance the robustness of relative navigation system in cases of noises and errors caused by the measurements. With the introduce of Extended Kalman Filter in relative navigation and $J_{4}$ perturbation in relative motion, simulation results of the flying-around mission configuration design are more persuasive.
研究了非合作绕飞任务$J_{4}$摄动椭圆轨道的构型设计、相对导航与控制。$J_{2}$摄动在卫星绕地运行的大多数情况下一般考虑$J_{2}$摄动,而相对运动则在$J_{4}$摄动下,以获得更精确的结果。绕地飞行任务的关键问题是轨道控制,建立了一种考虑远程机动、重构、绕地飞行和逃逸的更通用的方法。基于本文的轨道控制,目标和跟踪卫星的初始条件是适当的,但不是唯一的。为了提高相对导航系统在测量噪声和误差情况下的鲁棒性,引入了扩展卡尔曼滤波。在相对导航中引入扩展卡尔曼滤波,在相对运动中引入$J_{4}$摄动,使得绕飞任务构型设计的仿真结果更具说服力。
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引用次数: 0
Health Maintenance Decisions Based on Hazard Rate Function under Degradation Process 退化过程下基于危害率函数的健康维护决策
Pub Date : 2019-05-01 DOI: 10.1109/DDCLS.2019.8908916
An Liu, Xiao-fei Lu, Shaolin Hu, Weihui He
The classical Hazard Rate Function (HRF) is typically used to make preventative maintenance (PM) decisions and always estimates HRF based on time to failure data. Even so, PM determination using conventional HRF is not suitable for systems with condition monitoring. The system is stopped checking and maintaining when the measured health state exceeds a predetermined threshold, which is always referred to as a soft failure. Since the application of HRF for PM decision making has great advantages, the classic HRF should be extended to combine soft and hard failure of systems with condition monitoring. In this paper, we define the HRFs of hard and soft failure for system under condition monitoring and propose a method to estimate the HRFs with data of failure time. We discuss in detail the relationship between these two HRFs and the classical HRF. With double stochastic processes (processes of degradation and measured healthy status), the properties of these HRFs are also researched. Further the optimal maintenance decisions are made for non-repairable and repairable systems upon these two types of HRFs. Eventually, the idea of this paper is verified by numerical examples.
经典的危害率函数(HRF)通常用于制定预防性维护(PM)决策,并且总是根据故障发生时间数据估计HRF。即便如此,使用传统的HRF来确定PM也不适合有状态监测的系统。当测量的健康状态超过预定的阈值时,系统停止检查和维护,这通常被称为软故障。由于HRF应用于PM决策具有很大的优势,因此应将经典的HRF扩展为将系统软硬故障与状态监测相结合。本文定义了系统在状态监测下的硬故障和软故障hrf,并提出了一种利用故障时间数据估计系统硬故障hrf的方法。我们详细讨论了这两种HRF与经典HRF之间的关系。采用双随机过程(降解过程和健康状态测量过程),研究了这些HRFs的性质。此外,在这两种类型的hrf上,对不可修复和可修复的系统做出了最佳维护决策。最后,通过数值算例验证了本文的思想。
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引用次数: 0
Satellite Telemetry Anomaly Morphology Extraction Based on Normal Mode Gap Mining 基于Normal Mode Gap挖掘的卫星遥测异常形态提取
Pub Date : 2019-05-01 DOI: 10.1109/DDCLS.2019.8909043
Ying Du, Yueru Wang, Shaojun Chen, Xiang-qun Yang, Hui Liao, Chao Sun
It is difficult for conventional data mining methods to find out non-frequent and long-sequence satellite telemetry anomaly morphology, and the mining results are not compact and lack of time continuity. In this paper, an anomaly morphology extraction algorithm NPGM-AMEA for telemetry data based on normal pattern gap mining is proposed. Firstly, the satellite telemetry parameters are discretized by KT-Means algorithm, and the original telemetry parameters are converted into feature strings. Secondly, the feature pattern mining is carried out to obtain the feature pattern of telemetry normal sequence, that is, the frequent closure of feature string;Then, the gap between adjacent normal feature modes is located to obtain the location of the abnormal pattern; Finally, the abnormal feature string between the normal mode gaps are extracted and the abnormal curve shape of telemetry state is obtained by matching the abnormal feature string with the time series data. The correctness and reliability of the method are verified by the simulation experiment of abnormal shape mining of the telemetry parameters of a certain type of satellite.
传统的数据挖掘方法难以发现非频繁和长序列的卫星遥测异常形态,挖掘结果不紧凑,缺乏时间连续性。提出了一种基于正态模式间隙挖掘的遥测数据异常形态提取算法nggm - amea。首先,采用KT-Means算法对卫星遥测参数进行离散化,将原始遥测参数转换为特征串;其次,进行特征模式挖掘,获得遥测正常序列即特征串频繁闭合的特征模式;然后,定位相邻正常特征模式之间的间隙,获得异常模式的位置;最后,提取正常模隙之间的异常特征串,将异常特征串与时间序列数据进行匹配,得到遥测状态的异常曲线形状。通过对某型卫星遥测参数异常形态挖掘的仿真实验,验证了该方法的正确性和可靠性。
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引用次数: 0
Vehicles Detection of Traffic Flow Video Using Deep Learning 基于深度学习的交通流视频车辆检测
Pub Date : 2019-05-01 DOI: 10.1109/DDCLS.2019.8908873
Lu Lou, Qi Zhang, Chunfang Liu, Minglan Sheng, Yu Zheng, Xuan Liu
The vehicle detection and tracking are important tasks in intelligent transportation system. The traditional methods of vehicle detection often cause the coarse-grained results due to suffering from the complex environments. YOLO is a pragmatic approach to multi-target detection with a simple and effective algorithm. This paper use YOLO to detect the moving vehicles and use a modified Kalman filter algorithm to dynamically track the detected vehicles, achieving overall competitive performance in day or night. The experimental results show the method is robust to occluding vehicles or congested roads and can obtain 92.11% average accuracy of vehicle counting at 2.55 fps speed.
车辆检测与跟踪是智能交通系统中的一项重要任务。传统的车辆检测方法由于受到复杂环境的影响,结果往往较粗。YOLO是一种实用的多目标检测方法,算法简单有效。本文采用YOLO对移动车辆进行检测,并采用改进的卡尔曼滤波算法对检测到的车辆进行动态跟踪,实现了白天或夜间的整体竞争性能。实验结果表明,该方法对遮挡的车辆或拥挤的道路具有较强的鲁棒性,在2.55 fps的速度下,车辆计数的平均准确率可达92.11%。
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引用次数: 7
A Novel Health Index for Battery RUL Degradation Modeling and Prognostics 电池RUL退化建模与预测的新型健康指数
Pub Date : 2019-05-01 DOI: 10.1109/DDCLS.2019.8909006
Qiuhui Ma, Yan Wang, Weidong Yang, Bo Tao, Ying Zheng
Lithium-ion batteriesare widely used in our daily life. However, with the frequent use of lithium battery, the performance of lithium battery decreases due to the change of internal physical properties. The most intuitive result is that the capacity gradually decreases with the use of the battery. Therefore, timely and effective prediction of lithium-ion battery remaining useful life (RUL) is particularly important. In this paper, two new health indexes (HI), namely, discharging time difference of equal voltage interval (DtD_EVI) and discharging temperature difference of equal time interval (DTD_EtI), are proposed to represent the degradation process of lithium battery. Pearson correlation coefficient is used to analyze the relationship between these two health indexes and capacity, and then support vector regression (SVR) is used to establish the RUL regression model. Finally, the validity of the proposed method is verified by analyzing the lithium battery dataset of NASA.
锂离子电池广泛应用于我们的日常生活中。然而,随着锂电池的频繁使用,由于内部物理性质的变化,锂电池的性能下降。最直观的结果是容量随着电池的使用而逐渐减少。因此,及时有效地预测锂离子电池剩余使用寿命(RUL)就显得尤为重要。本文提出了两个新的健康指标(HI),即等电压间隔放电时间差(DtD_EVI)和等时间间隔放电温差(DTD_EtI)来表征锂电池的退化过程。利用Pearson相关系数分析这两个健康指标与容量的关系,然后利用支持向量回归(SVR)建立RUL回归模型。最后,通过对NASA锂电池数据集的分析,验证了所提方法的有效性。
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引用次数: 3
期刊
2019 IEEE 8th Data Driven Control and Learning Systems Conference (DDCLS)
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