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2018 37th Chinese Control Conference (CCC)最新文献

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Fault Estimation for Continuous Time Linear Systems with Time-varying Delay Based on Intermediate Estimator over Fading Channels 衰落信道上基于中间估计量的时变时滞连续时间线性系统故障估计
Pub Date : 2018-07-01 DOI: 10.23919/CHICC.2018.8483257
Yuenan Wang, Shenquan Wang, Wenchengyu Ji, Keping Liu
The problem of the fault estimation for continuous time linear systems with time-varying delay based on the intermediate estimator method is considered over fading channels. The fault estimation filter parameters are designed using the Lyapunov function method, a reciprocal convex combination approach, Wirtinger integral inequality and LMI formulation for the analysis and synthesis of the resultant systems. The desired filter parameter gains are obtained such that the resulting filter error system is exponentially stable. Then, the congruence transform method is used to remove the design constraints to obtain the feasibility result. A numerical example illustrates the effectiveness of the proposed method.
研究了在衰落信道下,基于中间估计器方法的时变时滞连续时间线性系统故障估计问题。采用李雅普诺夫函数法、倒凸组合法、Wirtinger积分不等式和LMI公式设计故障估计滤波器参数,对结果系统进行分析和综合。所期望的滤波器参数增益使得所得到的滤波器误差系统是指数稳定的。然后,利用同余变换方法去除设计约束,得到可行性结果。数值算例说明了该方法的有效性。
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引用次数: 1
A Discrete Artificial Bee Colony for Distributed Permutation Flowshop Scheduling Problem with Total Flow Time Minimization 离散人工蜂群求解总流时间最小的分布式置换流水车间调度问题
Pub Date : 2018-07-01 DOI: 10.23919/CHICC.2018.8482716
Jia-Qi Pan, Wen-Qiang Zou, Jun-Hua Duan
The distributed permutation flowshop scheduling problem (DPFSP) has important applications in modern industries. This paper presents a discrete artificial bee colony (DABC) algorithm for solving the DPFSP with total flow time criterion. We use the job permutation based representation to represent the candidate solutions. The insertion operator is adapted to generate neighboring solutions in the search process. We re-design the search phases including employ bees, onlooker bees, and scout bees according to the problem-specific knowledge. A comprehensive computational campaign based on the 720 benchmark instances demonstrates the effectiveness of the proposed DABC algorithm for solving the DPFSP with the total flowtime criterion.
分布式排列流水车间调度问题在现代工业中有着重要的应用。提出了一种离散人工蜂群(DABC)算法,用于求解具有总流时间准则的离散人工蜂群问题。我们使用基于作业排列的表示来表示候选解。该插入算子用于在搜索过程中生成邻解。我们根据问题具体知识重新设计了包括雇佣蜂、围观者蜂和侦察兵蜂在内的搜索阶段。基于720个基准实例的综合计算活动证明了所提出的DABC算法在求解具有总流时准则的DPFSP方面的有效性。
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引用次数: 14
Controller Area Network Modeling and Its Application in Cyber-Physical Power System Co-Simulation 控制器区域网络建模及其在信息-物理电力系统联合仿真中的应用
Pub Date : 2018-07-01 DOI: 10.23919/CHICC.2018.8483930
You Wu, Lijun Fu, Yinan Xu, Fan Ma, Yao Lu
As a mainstream communication bus, the controller area network (CAN) is widely applied in automobiles, ships, trains and power systems. In this paper, based on the application of CAN in power system control, a simulation model of CAN bus is built in network simulator OPNET, including the corresponding node model, process model, packet model and link model. The effectiveness of the model is validated through simulations. A cyber-physical power system co-simulation platform based on OPNET and PSCAD is also proposed in this paper. The interfaces between the two simulators and the time synchronization method of the co-simulation platform are designed. And the CAN model is modified with OPNET ESYS module to be integrated in the co-simulation.
控制器局域网(CAN)作为一种主流的通信总线,在汽车、船舶、火车和电力系统中有着广泛的应用。基于CAN总线在电力系统控制中的应用,在网络仿真器OPNET中建立了CAN总线的仿真模型,包括相应的节点模型、进程模型、分组模型和链路模型。仿真结果验证了该模型的有效性。本文还提出了一种基于OPNET和PSCAD的信息物理电力系统协同仿真平台。设计了两个仿真器之间的接口和联合仿真平台的时间同步方法。并利用OPNET ESYS模块对CAN模型进行了修改,将其集成到协同仿真中。
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引用次数: 2
New causality with adaptive model order and its applications to motor imagery EEG 具有自适应模型顺序的新因果关系及其在运动意象脑电中的应用
Pub Date : 2018-07-01 DOI: 10.23919/CHICC.2018.8483019
Hang Zheng, Qingshan She, Xueqing Geng, Yuliang Ma
Granger causality (GC) has been widely applied into the investigation of the directed functional connectivity from neurophysiological data, and however conventional GC approaches is based on the vector autoregressive (VAR) model in which the delay-dependent structure and the influence of model coefficients on causal relevance are not taken into account. In this paper, a novel causality analysis method is proposed based on modified causality measure and adaptive estimation of the orders of lagged variables. Firstly, the modified backward-in-time-selection (mBTS) algorithm is used for multivariate time series to dynamically select the lag order of each variable in basic VAR model. Secondly, a restricted VAR model is established using the appropriate set of orders and explanatory vectors found by mBTS. Then, the residuals and coefficients of the model are used to redefine the strength of cause-effect relationship between the variables. Compared with traditional GC, conditional GC (CGC), new causality (NC), new conditional causality (NCC), conditional GC based on time-ordered restricted VAR model (CGCI), the experimental results of simulations and real motor imagery EEG data verify the effectiveness of the proposed method.
格兰杰因果关系(Granger causality, GC)已被广泛应用于神经生理学数据的定向功能连通性研究中,然而传统的Granger因果关系方法是基于向量自回归(VAR)模型,其中没有考虑延迟依赖结构和模型系数对因果相关性的影响。本文提出了一种基于修正因果测度和滞后变量阶数自适应估计的因果分析方法。首先,对多变量时间序列采用改进后向时间选择(mBTS)算法,动态选择基本VAR模型中各变量的滞后阶数;其次,利用mBTS找到的一组合适的阶数和解释向量,建立了受限VAR模型;然后,利用模型的残差和系数来重新定义变量之间因果关系的强弱。与传统GC、条件GC (CGC)、新因果关系(NC)、新条件因果关系(NCC)、基于时间顺序受限VAR模型的条件GC (CGCI)相比较,仿真实验结果和真实运动意象脑电数据验证了所提方法的有效性。
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引用次数: 0
Calibration of MEMS Accelerometer Using Kaiser Filter and the Ellipsoid Fitting Method 利用Kaiser滤波和椭球拟合方法标定MEMS加速度计
Pub Date : 2018-07-01 DOI: 10.23919/CHICC.2018.8483761
Shiwei Cui, Lingguo Cui, Yidong Du, S. Chai, Baihai Zhang
MEMS accelerometer, the key component of the Inertial Navigation System (INS), has been widely applied in various electronic consumption fields such as mobile phones and unmanned vehicles. However, it suffers from the scale factor errors, constant biases, and misalignment errors. These calibration errors which are not fully compensated may remain in the initial alignment of the INS, and result in attitude errors. In order to address this problem, this paper presents an efficient calibration method of MEMS accelerometer based on Kaiser filter and the ellipsoid fitting. At first, the raw data from the output of the accelerometer will be filtered by using the Kaiser filter. In the second stage, the mathematical error model of the accelerometer is constructed via ellipsoid fitting. Subsequently, the calibration scheme will be given. The experimental results show that the output of the calibrated tri-axis MEMS accelerometer is close to the standard value, and the absolute error of the pitch angle calculated by the accelerometer is reduced from 4.431 degrees (before compensation) to 0.735 degrees (after calibration). Compared with the traditional six-position calibration method, the accuracy of the MEMS accelerometer is significantly improved more than 36% by applying the proposed algorithm. Therefore, it is feasible and advantageous to apply the presented calibration algorithm for improving the measurement accuracy of the MEMS accelerometer.
MEMS加速度计作为惯性导航系统(INS)的关键部件,已广泛应用于手机、无人车等各种电子消费领域。然而,它存在比例因子误差、恒定偏差和不对齐误差。这些校正误差如果没有得到充分补偿,可能会留在惯性导航系统的初始对准中,从而导致姿态误差。为了解决这一问题,本文提出了一种基于Kaiser滤波和椭球拟合的MEMS加速度计标定方法。首先,来自加速度计输出的原始数据将使用Kaiser滤波器进行过滤。第二阶段,通过椭球拟合建立加速度计的数学误差模型。随后,将给出校正方案。实验结果表明,校准后的三轴MEMS加速度计输出接近标准值,加速度计计算的俯仰角绝对误差由补偿前的4.431度减小到校准后的0.735度。与传统的六位置标定方法相比,采用该算法的加速度计精度显著提高36%以上。因此,采用本文提出的标定算法提高MEMS加速度计的测量精度是可行和有利的。
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引用次数: 7
Leader-Following Consensus Control for Complex Heterogeneous Multi-Agent Systems Without Velocity Measurements 不含速度测量的复杂异构多智能体系统的领导跟随共识控制
Pub Date : 2018-07-01 DOI: 10.23919/CHICC.2018.8483145
Jiaxiang Zhang, Qing Fei, Bo Wang, Qingbo Geng
This paper considers a leader-following consensus problem for complex heterogeneous multi-agent systems composed of the first-order linear, the second-order linear and the nonlinear Euler-Lagrange agents. First, we design a leader-following consensus control protocol with the active leader for multi-agent systems where the followers cannot obtain the velocity measurements. Then, according to the actual situation, the actuator saturation problem is solved as the special practical nonlinear problem by designing the actuator nonlinear consensus protocol. Based on Graph theory, Lyapunov theory and Barbalat's Lemma, the effectiveness of controller is proved with a second-order dynamic of the leader under the undirected communication topological graph. Some simulation examples verify the validity of the conclusion.
研究由一阶线性、二阶线性和非线性欧拉-拉格朗日智能体组成的复杂异构多智能体系统的领导-跟随一致性问题。首先,针对follower无法获得速度测量值的多智能体系统,设计了一种具有主动leader的leader- follower共识控制协议。然后,根据实际情况,通过设计执行器非线性共识协议,将执行器饱和问题作为特殊的实际非线性问题加以解决。基于图论、李雅普诺夫理论和Barbalat引理,在无向通信拓扑图下证明了控制器的有效性。仿真算例验证了结论的有效性。
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引用次数: 1
Voiceprint Feature Extraction Based on Wavelet Packet Decomposition 基于小波包分解的声纹特征提取
Pub Date : 2018-07-01 DOI: 10.23919/CHICC.2018.8482880
Huang Jinjie, Lei Ming, Lu Chao, Yuan Qingyuan
The main purpose of speech signal recognition system research is to improve the recognition rate of speech signal and reduce the recognition time. The feature extraction of speech signal in the process of recognition is one of the key aspects. In this paper, the speech feature extraction is to use the auditory characteristics of the human ear to decompose the wavelet packet into five levels and extract the dynamic features contained in the frame signal. After further processing, the speech feature parameters (DWPT parameters) are obtained. Simulation shows that the speaker recognition rate has been significantly improved compared with other traditional methods.
语音信号识别系统研究的主要目的是提高语音信号的识别率,缩短识别时间。语音信号的特征提取是识别过程中的关键环节之一。本文的语音特征提取是利用人耳的听觉特征,将小波包分解为5级,提取帧信号中包含的动态特征。进一步处理后,得到语音特征参数(DWPT参数)。仿真结果表明,与其他传统方法相比,该方法显著提高了说话人识别率。
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引用次数: 0
Fuzzy Control of Welding Trolley Speed Based on PLC 基于PLC的焊接小车速度模糊控制
Pub Date : 2018-07-01 DOI: 10.23919/CHICC.2018.8483972
Yuqing Li, Kailin Zhang, Yingtao Zhu
The quality of welding seam has been an obstacle of automatic and efficient production. Among them, speed of the welding trolley is an important factor affecting the quality of welding. In this paper, the fuzzy control of the welding trolley is adopted to make the driving of the trolley more stable and reduce the interference caused by the startup and stop of the motor, frictional force change of the ball screw, change of resistance in the walking process and the like. Speed change can be traced and its effect on the welding quality tends to be minimized, enabling the automation of the mill's production to be further improved. Since this project is based on the modification of the old B & R positioning system for the laser welding machine in pickling section of the cold rolling mill, Siemens S7-300 PLC program is used instead of the original B & R positioning system for position control in this project. Fuzzy control of welding trolley speed is applied to Siemens PLC program in order to realize its function and carry out corresponding research in this paper.
焊缝质量一直是实现自动化、高效生产的障碍。其中,焊接小车的速度是影响焊接质量的重要因素。本文采用模糊控制焊接小车,使小车的驱动更加平稳,减少电机启停、滚珠丝杠摩擦力变化、行走过程中阻力变化等引起的干扰。速度变化可以跟踪,对焊接质量的影响趋于最小化,使工厂生产的自动化程度进一步提高。由于本项目是在对冷轧机酸洗段激光焊接机原有的B & R定位系统进行改造的基础上进行的,因此本项目的位置控制采用西门子S7-300 PLC程序代替原有的B & R定位系统。本文将焊接小车速度的模糊控制应用到西门子PLC程序中,以实现其功能并进行相应的研究。
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引用次数: 1
Adaptive Output Feedback Tracking Controller for Wheeled Mobile Robots with Unmeasurable Orientation 不可测方向轮式移动机器人的自适应输出反馈跟踪控制器
Pub Date : 2018-07-01 DOI: 10.23919/CHICC.2018.8483261
Xiaorui Zhou, B. Ma, Lixia Yan
This work addresses the trajectory tracking control problem of wheeled mobile robot without orientation measurement. We propose a new adaptive output feedback tracking controller, which estimate the unknown orientation and guarantees that the position tracking error converge to zero, while the orientation estimated error tends to zero under mild exciting conditions of the desired trajectory. Compared with previous works, the convergence of the position tracking error is independent on the convergence of the orientation estimation error. Moreover, the velocity of the desired trajectory is just required not vanishing. Numerical simulations are presented to verify the effectiveness of the proposed controller.
研究了轮式移动机器人在无方位测量的情况下的轨迹跟踪控制问题。提出了一种新的自适应输出反馈跟踪控制器,该控制器估计未知方向,保证位置跟踪误差收敛于零,同时在期望轨迹的温和激励条件下,方向估计误差趋于零。与以往的研究相比,位置跟踪误差的收敛性与姿态估计误差的收敛性无关。此外,期望轨迹的速度只要求不消失。通过数值仿真验证了所提控制器的有效性。
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引用次数: 4
New Results on Deterministic Learning of Sampled-Data Nonlinear Systems 采样数据非线性系统确定性学习的新结果
Pub Date : 2018-07-01 DOI: 10.23919/CHICC.2018.8483544
Weiming Wu, Cong Wang, C. Yuan
In this paper, our main concern is to establish new exponential stability-based identification results for a class of Euler nonlinear sampled-data systems using deterministic learning. At first, a new deterministic learning law is designed based on the Lyapunov function method. Rigorous analysis is provided to show that the resulting closed-loop linear time-varying (LTV) systems (containing tracking errors and parameter estimation errors) is exponentially stable. All the states of the closed-loop system converge to a small neighborhood around the origin exponentially. Thus, locally-accurate identification performance can be achieved under the new deterministic learning algorithm. Finally, simulation results on Duffing oscillator system are given to show the effectiveness of the proposed method.
在本文中,我们主要关注的是利用确定性学习建立一类欧拉非线性采样数据系统的新的基于指数稳定性的辨识结果。首先,基于李雅普诺夫函数法设计了一种新的确定性学习律。严格的分析表明,所得到的闭环线性时变(LTV)系统(包含跟踪误差和参数估计误差)具有指数稳定性。闭环系统的所有状态都以指数形式收敛于原点附近的一个小邻域。因此,在新的确定性学习算法下,可以实现局部准确的识别性能。最后,对Duffing振子系统进行了仿真,验证了该方法的有效性。
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引用次数: 0
期刊
2018 37th Chinese Control Conference (CCC)
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