检索结果-内蒙古大学图书馆

Convergent Properties of Riccati Equation with Application to Stability Analysis of State Estimation

Mathematical Problems in Engineering 2017年第1期2017卷 1-7页

作者： Cai, X. Ding, Y.S. Li, S.Y. Engineering Research Center of Digitized Textile and Apparel Technology Ministry of Education College of Information Science and Technology Donghua University Shanghai201620 China Department of Automation Shanghai Jiao Tong University and Key Laboratory of System Control and Information Processing Ministry of Education Shanghai200240 China

Since the recursive nature of Kalman filtering always results in a growing size of the optimization problem, state estimation is usually realized by use of finite-memory, receding horizon, sliding window, or "frozen" techniques, which causes difficulties on stability analysis. This paper proposes a novel method on selection of an initial covariance matrix and a horizon for the Kalman filter to make sure that a sequence of the closed-loop Kalman filters are stable as time-invariant filters at subsequent time instant. Convergent properties of Riccati Difference Equation (RDE) are first exploited. Based on these properties, sufficient conditions for stability of a sequence of Kalman filters are obtained. Compared with the existent literature, the convergent properties and the stability conditions are less conservative since they provide analytic results and are applicable to more common cases where the RDEs are not monotonic. © 2017 X. Cai et al.

关键词： Kalman filters

来源：评论

学校读者我要写书评

暂无评论

Sliding Mode control of Servo Motor Based on Novel Reaching Law

Sliding Mode Control of Servo Motor Based on Novel Reaching ...

引用

第37届中国控制会议

作者： Xin Jin Anna Wang Dazhi Wang Tao Zhang College of Information Science and Engineering Northeastern University Key Laboratory of Industrial Control Network and System Shenyang Institute of AutomationChinese Academy of Sciences School of electrical engineering Dalian University of Technology

A new type of exponential rate is proposed, in order to improve the dynamic quality of servo motor speed control system. The reaching law relates the approach speed to the change of the system state quantity, which overcomes the shortcomings of the conventional exponential approach rate. The inherent buffeting problem of the sliding mode is effectively suppressed. The reaching law is applied to the servo motor speed control system, and a sliding mode variable structure speed controller based on a novel exponential reaching law is designed to replace the traditional PI regulator. Simulations and experiments show that the speed controller is robust to system parameters uncertainties, external disturbances and noise, and it can effectively improve the dynamic and static characteristics of the system. This makes the servo motor can be better applied to the robot servo system.

关键词： Robot Servo System Novel Reaching Law Sliding Mode control PI control

来源：评论

学校读者我要写书评

暂无评论

Trajectory Planning of Quadrotor UAV with Suspended Payload Based on Predictive control

Trajectory Planning of Quadrotor UAV with Suspended Payload ...

引用

第37届中国控制会议

作者： Binghan Sun Chaofang Hu Lei Cao Na Wang Yimin Zhou School of Electrical and Information Engineering Tianjin University Key Laboratory of Micro Opto-electro Mechanical System Technology Tianjin UniversityMinistry of Education Key Laboratory of System Control and Information Processing Ministry of Education School Engineering and Automation Tianjin Polytechnic University Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences

In the work of data collection,express transportation and rescue by UAV,we generally use UAVs to move the suspended payload in flight *** is fully necessary to study how to effectively suppress the swing of the suspended load and avoid known *** this paper,the kinematic equations of the quadrotor UAV and suspended payload in the three-dimensional space are analyzed.A trajectory planning method based on predictive control is proposed,and the cost function considering load swing angle and the distance between obstacle and UAV is designed and generate an optimal trajectory that meets the *** simulation results show that the proposed method can achieve the purpose of minimizing the swing angle and avoid the obstacles at the level of trajectory planning.

关键词： quadrotor UAV suspended load predictive control trajectory planning

来源：评论

学校读者我要写书评

暂无评论

Preventive Soot Blowing Strategy Based on State of Health Prediction for Coal-fired Power Plant Boiler

Preventive Soot Blowing Strategy Based on State of Health Pr...

引用

Chinese control Conference (CCC)

作者： Yuanhao Shi Jie Wen Xiaoqiong Pang Jianfang Jia Fangshu Cui Jianchao Zeng Jingcheng Wang North University of China School of Electrical and Control Engineering Taiyuan China North University of China School of Computer Science and Technology Taiyuan China Department of Automation and Key Laboratory of System Control and Information Processing Shanghai Jiao Tong University Shanghai China

This paper seeks the optimization of soot-blowing operations for heat transfer surfaces in coal- fired power plant boiler. A preventive soot blowing strategy based on state of health prediction for heat transfer surface was proposed. The average state of health of heat transfer surface was forecasted as the threshold to draft preventive soot blowing strategy. According to the theory of renewal process, an optimization model with the system prediction interval and the threshold of preventive soot blowing operation as the optimization variables and minimize average energy losses as the target function was established. By using Particle Swarm Optimization (PSO), the optimal preventive cycle and soot-blowing threshold were obtained, and the long-run average cost rate was the lowest. The model is validated with experiment data of a 300MW coal-fired power plant boiler and the parameters of prediction model are obtained. The results can verify the feasibility of proposed strategy. It can be used as the guide for the optimization of soot blowing in coal-fired power plant to improve the energy conservation level.

关键词： Thermal engineering Radio frequency Coal Combustion Heat engines Heat transfer

来源：评论

学校读者我要写书评

暂无评论

Preventive Soot Blowing Strategy based on State of Health Prediction for Coal-fired Power Plant Boiler

Preventive Soot Blowing Strategy based on State of Health Pr...

引用

第37届中国控制会议

作者： Yuanhao Shi Jie Wen Xiaoqiong Pang Jianfang Jia Fangshu Cui Jianchao Zeng Jingcheng Wang North University of China School of Electrical and Control Engineering North University of China School of Computer Science and Technology North University of ChinaSchool of Computer Science and Technology Shanghai Jiao Tong University Department of Automationand Key Laboratory of System Control and Information ProcessingMinistry of Education of China

This paper seeks the optimization of soot-blowing operations for heat transfer surfaces in coal-fired power plant boiler.A preventive soot blowing strategy based on state of health prediction for heat transfer surface was *** average state of health of heat transfer surface was forecasted as the threshold to draft preventive soot blowing *** to the theory of renewal process,an optimization model with the system prediction interval and the threshold of preventive soot blowing operation as the optimization variables and minimize average energy losses as the target function was *** using Particle Swarm Optimization（PSO）,the optimal preventive cycle and soot-blowing threshold were obtained,and the long-run average cost rate was the *** model is validated with experiment data of a 300 MW coal-fired power plant boiler and the parameters of prediction model are *** results can verify the feasibility of proposed *** can be used as the guide for the optimization of soot blowing in coal-fired power plant to improve the energy conservation level.

关键词： Coal-fired Boiler Heat Transfer Surface Soot-blowing State of Health（SOH） Prediction

来源：评论

学校读者我要写书评

暂无评论

Distributed Model Predictive control for Nonlinear Networked Systems with Asynchronous Communication 36

Distributed Model Predictive Control for Nonlinear Networked...

引用

第36届中国控制会议

作者： ZHOU Yuanqiang LI Dewei XI Yugeng CEN Lihui XU Yuli GAN Zhongxue Department of Automation Shanghai Jiao Tong UniversityKey Laboratory of System Control and Information ProcessingMinistry of Education School of Information Science and Engineering Central South University ENN Science & Technology Development Co. Ltd.

ISBN: (纸本)9781538629185

This paper concerns the distributed model predictive control（DMPC） problem for nonlinear multirate networked systems subject to asynchronous *** asynchronization of communication between each subsystem always exists in mechanic engineering and chemical *** motivation of this paper is to use the asynchronous information to improve closed-loop performance for a class of networked systems with coupled nonlinear *** handle the asynchronous communication,a methodology of state trajectory estimation for the coupled neighboring agents over each prediction horizon with guaranteed error bounds is *** make effective use of computational resources,a distributed model predictive control algorithm with the dual-model control strategy is *** conditions for ensuring the subsequent feasibility of the proposed algorithm and the stabilization of the closed-loop networked systems are developed ***,the theoretical results are verified by a simulation example for a set of coupled Van der Pol oscillators.

关键词： Networked systems Nonlinear system Nonlinear predictive control Distributed nonlinear control

来源：评论

学校读者我要写书评

暂无评论

Duplicate checking Strategies for Selecting Topics for Graduation Thesis Based on Maximum Public Sequence

引用

IOP Conference Series: Earth and Environmental Science 2019年第3期267卷

作者： Guorui Yu Li Huang Jiewen Sun Shangchun Liao School of Computer Science and Technology Wuhan University of Science and Technology phone:*** Intelligent Information Processing and Hubei Real-time Industrial Systems Laboratory. Key Laboratory of Metallurgical Equipment and Control Technology Wuhan University of Science and Technology Ministry of Education.

The system is based on the undergraduate thesis management system as the practice platform, focusing on the realization of the thesis topic check function. The current check-up detection system is based on the entire contents of the query, and does not meet the requirements for an undergraduate thesis query. According to the characteristics of the thesis, the system first divides the keywords into the topic, selects the irrelevant parts, then removes the irrelevant words, and finally checks the keywords in the topic, and realizes the efficient and accurate check for inspection.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Restricted deformable convolution based road scene semantic segmentation using surround view cameras

arXiv

引用

arXiv 2018年

作者： Deng, Liuyuan Yang, Ming Li, Hao Li, Tianyi Hu, Bing Wang, Chunxiang Department of Automation Shanghai Jiao Tong University Shanghai200240 China Key Laboratory of System Control and Information Processing Ministry of Education of China Shanghai200240 China SJTU-ParisTech Elite Institute of Technology Department of Automation Shanghai Jiao Tong University Shanghai200240 China

Understanding the surrounding environment of the vehicle is still one of the challenges for autonomous driving. This paper addresses 360-degree road scene semantic segmentation using surround view cameras, which are widely equipped in existing production cars. First, in order to address large distortion problem in the fisheye images, Restricted Deformable Convolution (RDC) is proposed for semantic segmentation, which can effectively model geometric transformations by learning the shapes of convolutional filters conditioned on the input feature map. Second, in order to obtain a large-scale training set of surround view images, a novel method called zoom augmentation is proposed to transform conventional images to fisheye images. Finally, an RDC based semantic segmentation model is built;the model is trained for real-world surround view images through a multi-task learning architecture by combining real-world images with transformed images. Experiments demonstrate the effectiveness of the RDC to handle images with large distortions, and that the proposed approach shows a good performance using surround view cameras with the help of the transformed images. Copyright © 2018, The Authors. All rights reserved.

关键词： Cameras

来源：评论

学校读者我要写书评

暂无评论

Adaptive Clustering SOFC Image Segmentation Based on Particle Swarm Optimization

引用

Journal of Physics: Conference Series 2019年第1期1229卷

作者： Xuefei Yang Xiaowei Fu Xi Li College of Computer Science and Technology Wuhan University of Science and Technology Hubei Province Key Laboratory of Intelligent Information Processing and Real-time Industrial System Wuhan China 430065 State Key Laboratory of Materials Processing and Die & Mould Technology Huazhong University of Science and Technology Wuhan China 430074 College of Automation Huazhong University of Science and Technology Wuhan China 430074

Microstructural parameters are important for analyzing the chemistry and performance of solid oxide fuel cells (SOFCs). Aiming at the YSZ / Ni anode optical microscopy (OM) image of SOFC, in this paper, particle swarm intelligent optimization algorithm is used to improve the fuzzy C-means clustering algorithm for image segmentation. Particle swarm optimization is used to adaptively search the initial clustering center, helping to avoid local optimization and preserve more image detail. The experimental results show that the proposed method can improve the segmentation accuracy of images. At the same time, it can accurately segment the SOFC three-phase and provide effective image segmentation results for the microstructure parameters.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A high-precision vision-based mobile robot slope detection method in unknown environment

A high-precision vision-based mobile robot slope detection m...

引用

Chinese automation Congress

作者： Kenan Du Jing Xin Yaqian Shi Ding Liu Youmin Zhang CETC 20 Shaanxi key Laboratory of Integrated and Intelligent Navigation Xi'an P.R. China Shaanxi Key Laboratory of Complex System Control and Intelligent Information Processing Xi‘an University of Technology Xi'an P.R. China Department of Mechanical and Industrial Engineering Concordia University Quebec Canada

Aiming at satisfying the demand of slope perception accuracy for mobile robots in the unknown environment, a high-precision vision-based mobile robot slope detection method in unknown environment is proposed in this paper. Firstly, the RGB images of slopesin the unknown environment arecaptured by the Kinect sensor installed on the mobile robot, and edge sharpening is performed on the images of slopes. Then, the coordinates of the slope edge pixel in the image coordinate system are transformed into the camera coordinate system to obtain the real length of the slope. Finally, the single image depth estimation method based on convolution neural network (CNN) is used to estimate the depth of theslope image toobtain the projection length of the slope only using a single slope image, and the slope angle is obtained by the inverse cosine function. The experimental results show that the slope detection method proposed in this paper has higher detection accuracy and can satisfy the demand of slope sensing accuracy of mobile robot in unknown environment.

关键词： Slope detection Coordinate transformation Single image Depth estimation Convolutional neural network (CNN)

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：