检索结果-内蒙古大学图书馆

IEEE International Conference on robotics and Biomimetics

作者： Fan Yang Zeng-Guang Hou Shao-Hua Mi Gui-Bin Bian Xiao-Liang Xie State Key Laboratory of Management and Control for Complex Systems Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781479973989

Percutaneous transluminal coronary angioplasty (PTCA) has been proved to be a standard solution to most cardiovascular diseases (CVDs). The surgical simulator provides the trainees a new vehicle to learn this skill much more conveniently and effectively. The blood vessel model is at the core of the virtual environment. In this paper, a robust and semi-automatic approach to segment the abdominal aorta from the computed tomography angiography (CTA) is developed. The proposed approach employs the geodesic active contours method as the main component. The edge potential map is generated by applying nonlinear mapping function. The initial contours are evolved by applyging the fast marching method. The surface information representing the vessel is extracted by the marching cubes method. This approach has been proved successful for the construction of 3-D surface model of the aorta based on the CTA series.

关键词： Image edge detection Level set Biomedical imaging Active contours Mathematical model Image segmentation Computational modeling

来源：评论

学校读者我要写书评

暂无评论

Implementation and test of human-operated and human-like adaptive impedance controls on Baxter robot

Implementation and test of human-operated and human-like ada...

引用

15th Annual Conference on Advances in Autonomous robotics systems, TAROS 2014

作者： Liang, Peidong Yang, Chenguang Wang, Ning Li, Zhijun Li, Ruifeng Burdet, Etienne Centre for Robotics and Neural Systems School of Computing and Mathematics Plymouth University United Kingdom MOE Key Lab. of Autonomous System and Network Control College of Automation Science and Engineering South China University of Technology China State Key Laboratory of Robotics and System Harbin Institute of Technology China Department of Computer Science and Engineering Chinese University of Hong Kong Hong Kong Department of Bioengineering Imperial College of Science Technology and Medicine London United Kingdom

ISBN: (纸本)9783319104003

This paper presents an improved method to teleoperate impedance of a robot based on surface electromyography (EMG) and test it experimentally. Based on a linear mapping between EMG amplitude and stiffness, an incremental stiffness extraction method is developed, which uses instantaneous amplitude identified from EMG in a high frequency band, compensating for non-linear residual error in the linear mapping and preventing muscle fatigue from affecting the control. Experiments on one joint of the Baxter robot are carried out to test the approach in a disturbance attenuation task, and to compare it with automatic human-like impedance adaptation. The experimental results demonstrate that the new human operated impedance method is successful at attenuating disturbance, and results similarly to as automatic disturbance attenuation, thus demonstrating its efficiency. © 2014 Springer International Publishing.

关键词： Stiffness

来源：评论

学校读者我要写书评

暂无评论

A Production Planning Model for a Steel Plate Fabrication Plant with Flexible Customization and Manufacturing

引用

IFAC Proceedings Volumes 2014年第3期47卷 3315-3320页

作者： Shan Lu Hongye Su Charlotta Johnsson Lei Xie State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control Zhejiang University Hangzhou 310027 P.R. China Department of Automatic Control Lund University Sweden

With increased market competition and advances in modern manufacturing technologies, requirements on customer orders and manufacturing conditions have become more diversified. This paper addresses a dynamic production planning problem for a steel plate fabrication plant with practical flexibility of both customers and manufacturing, such as steel slab-plate matching rules, plate substitution options, production line assignment. These flexibility factors can provide the decision maker with auxiliary options to satisfy customer requirements through realizable production planning. The steel slab-plate matching rules combined with plate substitution options are visualized by a networked graph and formulated by a set based design. A mixed-integer nonlinear programming (MINLP) model that incorporates various manufacturing constraints and the flexibility is proposed to simultaneously optimize production strategy and provide practical managerial information such as backlogging/inventory level, capacity availability, and also steel slab demand. Linearization methods are used to transform the original MINLP problem into mixed integer linear programming (MILP) model resulting in easier and quicker solutions. A real industrial steel plate fabrication plant is used as a case and illustrates the effectiveness and applicability of the proposed method.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Design, control and planning for a crustal movement simulation system

Design, control and planning for a crustal movement simulati...

引用

IEEE International Conference on robotics and Biomimetics

作者： Qingzeng Ma Guodong Yang En Li Zize Liang State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781479973989

Crustal movement simulation takes the very essential effect in the research on water cycle and related land surface processes. In this paper, a crustal movement simulation system (CMSS) is presented. The system enables researchers investigate the effects of crustal movement on rivers and lakes in the laboratory environment. The CMSS proposed consists of twelve sets of parallel mechanism supported by four serial chains with three degree of freedoms (DOFs). The kinematics analysis of the parallel mechanism with four serial chains is provided. To solve the coplanar problem of four screws, a control method based on linear interpolation with parabola transition is introduced. Surface fitting algorithm based on geometric relations is used to simulate the land surface. Experiment results demonstrate the effectiveness of the system and the methods proposed.

关键词： Fasteners Kinematics Biological system modeling Planning Lakes Computational modeling Numerical models

来源：评论

学校读者我要写书评

暂无评论

Unbiased Minimum-Variance Filtering for systems with Randomly Multi-Step Sensor Delays

Unbiased Minimum-Variance Filtering for Systems with Randoml...

引用

Annual Conference of the IEEE Industrial Electronics Society

作者： Yilian Zhang Fuwen Yang Qing-Long Han Key Laboratory of Advanced Control and Optimization for Chemical Processes of Ministry of Education East China University of Science and Technology Centre for Intelligent and Networked Systems Central Queensland University

ISBN: (纸本)9781479940318

In this paper, a linear unbiased minimum-variance filtering problem is considered for a class of systems with randomly multi-step sensor delays. A new mathematical model is established for the multi-step sensor delays. Different from the augmented method for dealing with delayed systems, a linear unbiased minimum-variance filter design method is proposed without augmenting the state vector, which effectively reduces the filter dimensions. A recursive algorithm for calculating the filter gain matrix is developed. The simulation results illustrate the effectiveness of the proposed method.

关键词： networked control systems Filtering Recursive estimation Kalman filters Delay systems Stochastic processes Sensor system Communication networks

来源：评论

学校读者我要写书评

暂无评论

An Improved eLBPH Method for Facial Identity Recognition: Expression-Specific Weighted Local Binary Pattern Histogram

An Improved eLBPH Method for Facial Identity Recognition: Ex...

引用

IEEE International Conference on robotics and Biomimetics

作者： Xuanyang Xi Zhengke Qin Shuguang Ding Hong Qiao State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing 100190 Research Center of Precision Sensing and Control Institute of Automation Chinese Academy of Sciences Beijing 100190 Institute of Applied Mathematics AMSS Chinese Academy of Sciences Beijing 100190

ISBN: (纸本)9781467396769

Face perception is one of the most important tasks in robot vision especially for service robots. The spatially enhanced local binary pattern histogram (eLBPH) method has been proved to be effective for facial image representation and analysis, but the expression factor isn't considered and the region-dividing method is rough. In this paper, inspired by the biological mechanism of human memory and face perception, we improve the eLBPH and propose a new method, expressionspecific weighted local binary pattern histogram (EWLBPH). Accordingly, the new method introduces a semantic division process and an extended modulation process into the classical eLBPH. What's more, for the facial expression recognition, we propose a novel method which utilizes the convolutional deep belief network (CDBN) to extract discriminative information and represent them effectively. Finally, through experiments we verify the rationality and effectiveness of the improvement and two psychophysical findings.

关键词： eLBPH CDBN facial

来源：评论

学校读者我要写书评

暂无评论

Real-time pose estimation and motion control for a quadrotor UAV

Real-time pose estimation and motion control for a quadrotor...

引用

World Congress on Intelligent control and Automation (WCICA)

作者： Yilin Hong Xueqiu Lin Yan Zhuang Yiwen Zhao School of Control Science and Engineering Dalian University of Technology Dalian China State Key Laboratory of Robotics Chinese Academy of Sciences Shenyang China

Real-time pose estimation and reliable motion control are two crucial tasks for a quadrotor UAV. In order to obtain accurate and robust pose estimation, an estimation algorithm based on Cubature Kalman Filter (CKF) is adopted in this paper. Considering the limitation of a quadrotor working in GPS-denied indoor environments, a sparse optical flow algorithm is utilized in our work to estimate the quadrotor's velocity and position. After acquiring the quadrotor's real-time pose information, the pose and position control of a micro quadrotor are accomplished by using PID and PI-D controller. A series of experiments are performed on a home-made quadrotor UAV named Smart-QR. The experimental results show the validity and practicability of the proposed approach.

关键词： Estimation Optical filters Adaptive optics Optical sensors Image motion analysis Computer vision Quaternions

来源：评论

学校读者我要写书评

暂无评论

Impulsive Synchronization of Complex Dynamical Networks with Distributed Delays

Impulsive Synchronization of Complex Dynamical Networks with...

引用

第三十三届中国控制会议

作者： Sumei Chu Wangli He Qing-Long Han Feng Qian The Key Laboratory of Advanced Control and Optimization for Chemical Processes East China University of Science and Technology Centre for Intelligent and Networked Systems Central Queensland University Rockhampton QLD 4702Australia

ISBN: (纸本)9781479947249

This paper investigates synchronization of complex dynamical networks with distributed-delay coupling via impulsive *** on the theory of impulsive functional differential equations and the concept of an average impulsive interval,sufficient conditions ensuring synchronization are *** illustrative example is given to show the effectiveness of the proposed method.

关键词： Synchronization,Impulsive control,Distributed-delay coupling

来源：评论

学校读者我要写书评

暂无评论

Method to Improve the Performance of Communication-Based Train control(CBTC) systems with Transmission Delays and Packet Drops

Method to Improve the Performance of Communication-Based Tra...

引用

17th International IEEE Conference on Intelligent Transportation systems & The Asia-Pacific Council on systems Engineering Conference 2014

作者： Bing Bu Fei Richard Yu Tao Tang State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Department of Systems and Computer Engineering Carleton University

Communication-based train control(CBTC)systems use wireless local area networks(WLANs)for trainground *** delays and packet drops may cause unnecessary tractions and brakes of trains,degradation of riding comfortability,rising of energy consumption and loss of the line’s *** this paper,We model the system to control a group of trains in CBTC as a networked control system(NCS)with transmission delays and packet *** study the delays and packet drops in CBTC,analyze their effects on train’s control,and propose a method to improve the performance of *** simulation results are *** show that our proposed method has a strong tolerance for transmission delays and packet drops,and outperforms the currently adopted scheme in different channel conditions.

关键词： Method to Improve the Performance of Communication-Based Train control systems with Transmission Delays and Packet Drops

来源：评论

学校读者我要写书评

暂无评论

Performance Improvement in Communication-Based Train control(CBTC)systems using Cognitive control

Performance Improvement in Communication-Based Train Control...

引用

17th International IEEE Conference on Intelligent Transportation systems & The Asia-Pacific Council on systems Engineering Conference 2014

作者： Wenzhe Sun F. Richard Yu Tao Tang State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Department of Systems and Computer Engineering Carleton University

Communication-Based Train control(CBTC)systems use bidirectional train-wayside wireless communications to ensure the safe operation of rail *** to unreliable wireless networks,the uncertainties in train status information leads to imperfect traction/braking commands,which will affect CBTC *** this paper,we use recent advance in cognitive control to positively improve control performance as well as reduce information uncertainties.A cognitive control system composed of networked control System(NCS)-based state-space model and entropic-state model is *** performance optimization problem based on communication period decision and Medium Access control(MAC)-layer parameters adaption is formulated as a stochastic control *** the energy consumption and information uncertainties is the objective of our *** result shows that the proposed cognitive control scheme can improve CBTC performance.

关键词： cognitive control,CBTC,wireless networks,quality of service.

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：