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Asian control Conference

作者： Shibei Xue Thien Nguyen Ian R. Petersen Department of Automation Key Laboratory of System Control and Information Processing Shanghai China Research School of Engineering Australian National University Canberra Australia

ISBN: (纸本)9781509015740;9781509015733

In this paper, we utilize a feedback strategy to stabilize a single qubit in a non-Markovian environment with a Lorentzian spectrum. The non-Markovian single qubit is represented in an augmented system model, where an ancillary system is introduced as the internal mode of the environment to generate Lorentzian noise. The density matrix of the single qubit can be estimated by using an augmented-system-based quantum stochastic master equation. Then a feedback controller can be driven by the estimates to stabilize the qubit in a target state. Simulations show the feedback strategy can provide effective control of the non-Markovian single qubit.

关键词： Mathematical model Couplings Feedback control Quantum computing White noise Colored noise Quantum entanglement

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Track Irregularities Estimation Based on the Vibration of Car-body

Track Irregularities Estimation Based on the Vibration of Ca...

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2017 IEEE 第2届先进信息技术,电子与自动化控制国际会议(IAEAC 2017)

作者： Yuanxing Zhang Xinya Sun Xiaobin Xu Wei Dong Yindong Ji Tsinghua National Laboratory for Information Science and Technology Department of Automation Tsinghua University Institute of System Science and Control Engineering Hangzhou Dianzi University

Track irregularities have a significant effect on ride quality and traffic safety. The inspection of track irregularity mainly relies on special track inspection car which has a high cost and long ins

ISBN: (纸本)9781467389808

关键词： Track irregularities On-line inspection Track quality index Multiple linear regression track irregularity on line detection Vibration Linear Regression Vehicle body railway system normal acceleration Ride quality Traffic safety

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Nonlinear filtering with adaptive estimation of state transfer matrix for nonlinear systems with multiplicative noise

Nonlinear filtering with adaptive estimation of state transf...

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Youth Academic Annual Conference of Chinese Association of automation (YAC)

作者： Jianwen Meng Quanbo Ge Rui Wang Zhuyun Niu Logistics Engineering College Shanghai Maritime University Shanghai China Institute of System Science and Control Engineering School of Automation Hangzhou Dianzi University Hangzhou China North Automatic Control Technology Institute Taiyuan Shanxi China

ISBN: (纸本)9781538629024

State estimation for systems with unknown state transfer matrix and multiplicative noise is very classical and important in signal processing and target tracking. Aiming at the problem, an adaptive estimation algorithm which can deal with unknown state transfer matrix and multiplicative noise has been presented by Dongsheng Chu for linear systems under without considering multiplicative noise in [1]. This work is very interesting and significative. A direct problem is how to design the adaptive estimation algorithm for nonlinear systems based on the current work. For this, this paper considers the estimator design of nonlinear systems with unknown state transfer matrix and multiplicative noise by using the extended Kalman filter (EKF). The purpose is to want to make clear the difference of estimators design between the linear system and the nonlinear system. Accordingly, it can provide the base to design adaptive unscented Kalman filter with unknown state transfer matrix and multiplicative noise. The result shows that there is difference between adaptive algorithms for linear and nonlinear systems, but the derive processes are similar.

关键词： Mathematical model Algorithm design and analysis Estimation Noise measurement Nonlinear systems Kalman filters Heuristic algorithms

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RNN-based Method for Fault Diagnosis of Grinding system 7

RNN-based Method for Fault Diagnosis of Grinding System

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7th IEEE Annual International Conference on CYBER Technology in automation, control, and Intelligent systems, CYBER 2017

作者： Xing-Yu, Qu Peng, Zeng Chengcheng, Xu Dong-Dong, Fu Key Lab of Networked Control System Chinese Academy of Sciences Shenyang Institute of Automation Shenyang110016 China University of Chinese Academy of Sciences Beijing100049 China Northern Heavy Industries Group Co. Itd Shenyang110860 China College of Information Science and Engineering Northeastern University Shenyang110819 China

ISBN: (纸本)9781538604892

At present, the fault diagnosis of grinding system is evaluated by human being, which causes low efficiency, low accuracy, high cost and casualties easily. The traditional method has the unsatisfied performance on the classification ability of sample dataset with high dimension and temporal correlation. Aiming at the above problems, a RNN-LSTM based deep learning method is proposed in the paper, which realizes the intelligent fault diagnosis of grinding system. The dataset is batched for inputs of LSTM networks, and the temporal correlation of dataset is extracted, which is used to analyze the fault classification of feature vectors input of before and after time. We conduct the comparison of RNN-LSTM based networks and autoencoder based networks via simulation. It is concluded that the RNN-LSTM based method is obviously superior to the method with autoencoder for the dataset with high dimension and high temporal correlation, and the result of the error rate is less than 3%. © 2017 IEEE.

关键词： Failure analysis

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Research on Weld Quality Detection Method Based on Machine Vision and Computer Image Processing

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IOP Conference Series: Materials Science and engineering 2019年第5期631卷

作者： Bin Xue Shufang Ma Huihui Chu Kang Liu Shuangben Jiao Qingsen Meng Engineering and Technology R&D center of Mechanical and Electrical in Colleges of Shandong Qingdao Binhai University Qingdao Shandong 266555 PR China School of Mechanical and Electrical Engineering Qingdao Binhai University Qingdao Shandong 266555 PR China School of Material Science and Engineering Taiyuan University of Science and Technology Taiyuan Shanxi 030024 PR China Qingdao Zhongzhuang Vision Automation System Control Co. Ltd. Shandong 266555 PR China

In the weld quality inspection system based on machine vision and computer image processing, according to the principle of laser triangulation, a line laser is used to project structured light on the weld surface, and the weldment moves uniformly in a straight line on the moving platform. At the same time, the CMOS camera captures the structured light image and transmits it to the industrial computer through Gigabit Ethernet. The image is denoised by the median filtering algorithm on the industrial computer, then the image is segmented by the maximum inter-class error (Otus) method, and the image is binarized according to the threshold value. Then the center of the stripe is extracted by constructing four direction templates, and the 3D model is reconstructed by curve fitting. After the completion of the image processing, the geometric size of the weld is measured by mathematical formula. After the weld seam measurement is completed, the weld seam is transversely cut off at the same position, measured by manual method, and then the data measured by the two methods are compared. Through repeated measurements and comparisons of weld width, residual height and back forming, the precision of the system meets the practical requirements. The weld forming varies with the welding parameters within a certain range, but changes little and has good stability.

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The Ellipsoidal Invariant Set of Fractional Order systems Subject to Actuator Saturation:The Convex Combination Form

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IEEE/CAA Journal of Automatica Sinica 2016年第3期3卷 311-319页

作者： Kai Chen Junguo Lu Chuang Li School of Mechanical and Electrical Engineering Hainan University Department of Automation Shanghai Jiao Tong University Key Laboratory of System Control and Information Processing Ministry of Education of China

The domain of attraction of a class of fractional order systems subject to saturating actuators is investigated in this paper. We show the domain of attraction is the convex hull of a set of ellipsoids. In this paper, the Lyapunov direct approach and fractional order inequality are applied to estimating the domain of attraction for fractional order systems subject to actuator saturation. We demonstrate that the convex hull of ellipsoids can be made invariant for saturating actuators if each ellipsoid with a bounded control of the saturating actuators is invariant. The estimation on the contractively invariant ellipsoid and construction of the continuous feedback law are derived in terms of linear matrix inequalities (LMIs). Two numerical examples illustrate the effectiveness of the developed method. © 2014 Chinese Association of automation.

关键词： Algebra Computational geometry Linear matrix inequalities Numerical methods Saturation (materials composition)

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Dynamic Characteristics Analysis of Cruise Missile controlled by Grid Fin 28

Dynamic Characteristics Analysis of Cruise Missile Controlle...

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第28届中国控制与决策会议

作者： XU Zhaoqing Pei Hailong College of Automation Science and Engineering Key Laboratory of Autonomous System and Networked ControlMinistry of EducationSouth China University of Technology

ISBN: (纸本)9781467397155

The dynamic characteristics of certain cruise missile which is controlled by grid fin is analyzed in this *** aerodynamic force of grid fin is analyzed when the grid fin rotates in flying,then the aerodynamic force and aerodynamic moment along with movement equations are linearized based on the small perturbation linear theory,the beginning state of the cruise is chosen as the feature point,and then the dynamical coefficient are calculated,then the longitudinal and lateral perturbation equations are *** dynamic responses of each motion deviation under the longitudinal and lateral free disturbance are obtained through solving the perturbation *** transfer functions and the dynamic responses under the step deflection of grid fin are *** results indicate that the grid fin can provide favorable stability,the maneuverability of Bank-to-turn is much larger than Skid-to-turn..

关键词： cruise missile grid fin dynamic characteristics dynamic response

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Satellite Formation control and Navigation Experiment Platform Based on UAVs 35

Satellite Formation Control and Navigation Experiment Platfo...

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第35届中国控制会议

作者： XU Zhaoqing PEI Hailong College of Automation Science and Engineering Key Laboratory of Autonomous System and Networked ControlMinistry of EducationSouth China University of Technology

ISBN: (纸本)9781509009107

In order to simulate the in-orbit movement of formation satellites,the unmanned helicopter is utilized to set up the microgravity environment relative navigation ground simulation *** platform can provide the movement of six degrees of freedom and can simulate the formation satellite flying in three-dimensional *** test platform includes host computer system,communication system,UAVs formation control system,satellite attitude simulation system,and so *** are equipped with laser radar and visible light *** control and navigation of multi-body can be achieved under complex network *** platform can be used for the test of satellite autonomous formation simulation,joint fleet navigation,and so *** algorithm of multi-body formation,multi-source and multi-target tracking based on sensor network,multi-body navigation and remote control can be verified on this platform.

关键词： formation satellites unmanned helicopter test platform

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Visual Navigation for Mobile Robot with Kinect Camera in Dynamic Environment 35

Visual Navigation for Mobile Robot with Kinect Camera in Dyn...

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第35届中国控制会议

作者： XIN Jing JIAO Xiao-liang YANG Yin LIU Ding School of Automation & Information Engineering Xi'an University of Technology Shaanxi Key Laboratory of Complex System Control and Intelligent Information Processing

ISBN: (纸本)9781509009107

To solve the problem of the visual navigation for mobile robot in dynamic environment,a visual navigation system for mobile robot with Kinect camera is ***,the improved RBPF(RAO Blackwellized particle filters) algorithm is used to build the 2D grid map of the indoor environment and on the basis of this map operation of inflating obstacles is applied to build the global grid map considering the actual size of the ***,cost map using motion primitives is built while using this cost map,anytime Repairing A*(ARA*) global path planning algorithm,which has property of anytime algorithm,is combined with Dynamic Window Approach(DWA) local path planning algorithm to plan a smooth path from start point to target point and generate the optimal control input for robot ***,the adaptive monte carlo localization method(KLD-Sampling) is used to locate the robot and then a visual navigation system for mobile robot with Kinect camera is *** indoor mobile robot navigation experiment results show that the designed robot navigation system can plan a smooth path which is in accordance with robot kinematics and autonomously avoid the static and moving obstacles in the environment.

关键词： Kinect Camera Motion primitives Cost map Visual navigation Dynamic environment

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Robot Visual Sliding Mode Servoing using SIFT Features 35

Robot Visual Sliding Mode Servoing using SIFT Features

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第35届中国控制会议

作者： XIN Jing RAN Bao-jing MA Xiao-min School of Automation & Information Engineering Xi'an University of Technology Shaanxi Key Laboratory of Complex System Control and Intelligent Information Processing

ISBN: (纸本)9781509009107

To solve the robot visual servoing problem in the natural scene,a robot visual sliding servoing method using SIFT features in the framework of epipolar-geometry-based visual servoing is ***,corresponding image feature points from the current image feature and the desired image are obtained by SIFT algorithm;Then the features error of the whole robot visual servoing system are calculated according to the corresponding points;Finally,considering characteristics of epipolar geometry for robot visual servoing system,the rotation sliding mode controller and translation sliding mode controller are sequentially designed to calculate the rotation movement and translation movement of the robot *** positioning experiments on a 6DOF industrial robot demonstrate that the proposed method can effectively locate an object in the natural scene.

关键词： Epipolar geometry Visual servoing Sliding mode control SIFT features

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