检索结果-内蒙古大学图书馆

Remote Landslide Observation System with Differential GPS

Procedia Earth and Planetary Science 2012年 5卷 70-75页

作者： Xing Zhu Qiang Xu Jianbin Zhou Maolin Deng State Key Laboratory of Geohazard Prediction and Geoenvironment Protection Chengdu 610059 China College of Nuclear Technology and Automation Engineering Chengdu University of Technology Chengdu 610059China

With aim to master early deformation stages and motion laws of landslide, the raw displacement data of landslide are very important for the landslide researchers and environmental scientists. With the recent advances of Global Position System (GPS) and computer science, the differential GPS technology now can be used for the remote displacement observation of landslide. Therefore, the paper developed a landslide displacement remote observation system based on differential GPS technology to get the raw displacement data continually. The system is divided into hardware and software functional segments. A real landslide in southwest of China was monitored for several months through observation using this GPS-based system placed around and the observed results are presented in this paper. The practical application shows that this system has such advantages as being highly-precise, nearly real-time, remote, continuous and automatic.

关键词： deformation stages differential GPS landslide remote observation real-time

来源：评论

学校读者我要写书评

暂无评论

Prognostics method for analog electronic circuits

Prognostics method for analog electronic circuits

引用

2012 Annual Conference of the Prognostics and Health Management Society, PHM 2012

作者： Vasan, Arvind Sai Sarathi Long, Bing Pecht, Michael Center for Advanced Life Cycle Engineering University of Maryland College ParkMD20742 United States School of Automation Engineering University of Electronic Science and Technology of China Chengdu China

ISBN: (纸本)9781936263059

Analog electronic circuits are an integral part of many industrial systems. Failure in such analog circuits during field operation can have severe economic implications. The presence of an expert system that can provide advance warnings on circuit failures can minimize the downtime and improve the reliability of electrical systems. Through successive refinement of circuit's response to a sweep signal, features are extracted for fault prognosis. From the extracted features, a fault indicator is developed. An empirical model is developed based on the degradation trend exhibited by the fault indicator. Particle filtering approach is used for model adaptation and remaining useful performance estimation. This framework is completely automated and has the merit of implementation simplicity. The proposed framework is demonstrated on two analog filter circuits.

关键词： Expert systems

来源：评论

学校读者我要写书评

暂无评论

Kinematics simulation and control design of the Agile Wrist in a Dual-arm robotic mechanical systems

Kinematics simulation and control design of the Agile Wrist ...

引用

IEEE International Conference on Computer Science and automation engineering (CSAE)

作者： Yang Jian Jorge Angeles College of Nuclear Technology & Automation Chengdu University of Technology Chengdu China Department of Mechanical Engineering & Centre for Intelligent Machines McGill University Montreal Canada

In order to improve space positioning accuracy of the Agile Wrist consisting of a modified spherical parallel manipulator, which will influence the result of the Collisions experiment in a robotic mechanical testbed directly, this paper explores the motion control of Agile Wrist. Based on analysis an input - output (I/O) equation of spherical four-bar linkages for forward-displacement of spherical parallel robots, the inverse kinematics derivation is reported here to find the active-joint variables for each possible position and orientation (pose) of the mobile plate, as well as the singularity exist and defines what may be generalized as the workspace boundary. Meanwhile the kinematics simulation by using simulink S-Function combined with Q8 controller was carried out. The results showed that the Kinematics analysis and Control Design of Agile Wrist were correct. The modified spherical parallel manipulator can meet with the demands of Collisions experiment in the robotic mechanical testbed.

关键词： Kinematics Manipulators Wrist Collision avoidance Equations Mathematical model

来源：评论

学校读者我要写书评

暂无评论

A hybrid of BP network and H-H model to study neural genesis of mammalian respiratory rhythm

A hybrid of BP network and H-H model to study neural genesis...

引用

2012国际生理学学术大会

作者： Hongrui An Fei Li Li Chen Hua Zhou Yuhong Tang Yu Zheng Department of Physiology West China School of Preclinical and Forensic MedicineSichuan University Department of Application of Nuclear Technology The College of Nuclear Technology and Automation EngineeringChengdu University of Technology

＜正＞Most models of respiratory rhythmogenesis are built based on H-H principle,but without any substantive *** network is a widely used model to study artificial intelligent *** work is carried out to establish a new model of generation of respiratory rhythm with combination of the 2 models. Five basic respiratory neurons models were built according to H-H *** data from them were used as input vectors of BP *** discharge was considered as output *** weights array was obtained by using *** platform was designed with the weights *** chose 5-X-1 BP structure by using reported data about respiratory network models and got the best number（8） of hidden layer *** event of a respiratory cycle was divided successively into 100 sets of data to test the Train,Validation and Test on ratio of 70:15:15,*** R of Train,Validation and Test is bigger than *** can be concluded that H-H style and BP network can be combined as a new method to build a highly feasible respiratory neural network model.

关键词： respiratory rhythm BP network H-H model

来源：评论

学校读者我要写书评

暂无评论

SF motivated MRI and PET image fusion by combining PCA and RIM under IHS transform

引用

Journal of Computational Information Systems 2012年第11期8卷 4435-4442页

作者： Tan, Hang Tan, Huachun Huang, Xianhe He, Changtao College of Automation Engineering University of Electronic Science and Technology of China Chengdu 610054 China School of Mechanical and Vehicular Engineering Beijing Institute of Technology Beijing 100081 China College of Electronic Engineering University of Electronic Science and Technology of China Chengdu 610054 China

The fusion of multimodal brain images for a given clinical application is importance. A PET image indicates brain function but has low spatial resolution, while an MRI image shows brain tissue anatomy and contains no functional information. Hence, a perfect fused image should contain both functional information and spatial characteristics with no spatial and color distortions. The intensity-hue-saturation (IHS) transform and retina-inspired model (RIM) fusion technique can preserve more spatial feature and more spectral information content, respectively. Moreover, principal component analysis (PCA) algorithm can extract main feature to minimize redundancy. The proposed algorithm integrates their advantages to improve fused image quality. The experiment demonstrates that the proposed algorithm outperforms conventional fusion methods such as PCA, Brovey transform (BT), RIM, discrete wavelet transform (DWT) in light of visual effect and quantitative evaluation. © 2012 Binary Information Press.

关键词： Principal component analysis

来源：评论

学校读者我要写书评

暂无评论

Effect of unequal injection rates on asymmetric exclusion processes with junction

引用

Chinese Physics B 2011年第6期20卷 131-138页

作者：肖松刘明哲王建军王华 Faculty of Metallurgical and Energy Engineering Kunming University of Science and Technology College of Nuclear Technology and Automation Engineering Chengdu University of Technology

In this paper, we investigate the effect of unequal injection rates on totally asymmetric simple exclusion processes （TASEPs） with a 2-input 1-output junction and parallel update. A mean-field approach is developed to deal with the junction that connects two sub-chains and the single main chain. We obtain the stationary particle currents, density profiles and phase diagrams. Interestingly, we find that the number of stationary-state phases is changeable depending on the value of a1 （a1 is the injection rate on the first sub-chain）. When a1 〉 1/3, there are seven stationary-state phases in the system, however when a1 〈 1/3, only six stationary-state phases exist in the system. The theoretical calculations are shown to be in agreement with Monte Carlo simulations.

关键词： totally asymmetric simple exclusion process mean-field approach Monte Carlo simulations junction

来源：评论

学校读者我要写书评

暂无评论

Robust adaptive detection against SIRV clutter in the presence of steering vector mismatches

引用

Progress In Electromagnetics Research C 2012年 26卷 245-257页

作者： Dai, X. Cui, G. Kong, L. College of Automation Chongqing University Chongqing China School of Electronic Engineering University of Electronic Science and Technology of China Chengdu China

This paper mainly deals with the problem of detecting a target against spherically invariant random vector (SIRV) clutter in the presence of steering vector mismatches. Assuming that the mismatch of the steering vector satisfies the conic constraint, the generalized likelihood ratio test (GLRT) is devised, and the geometry description is proposed for the derived solution. Additionally, the fully adaptive GLRT is derived by replacing the exact covariance with fixed point estimate (FPE). Finally, several numerical results are provided and discussed.

关键词： Clutter (information theory)

来源：评论

学校读者我要写书评

暂无评论

A Mineral Oil Monitoring System for the Daya Bay Neutrino Experiment

引用

nuclear Physics B - Proceedings Supplements 2012年 229-232卷 449-449页

作者： Lin, Yanchang Department of Physics The University of Hong Kong Hong Kong Department of Physics The Chinese University of Hong Kong Hong Kong College of Nuclear Technology and Automation Engineering Chengdu University of Technology China

The Daya Bay Reactor Neutrino Experiment expects to determine the neutrino mixing angle θ 13 with a sensitivity of sin 2(2θ 13)=0.01 in a three-year run. Eight three-zone cylindrical Anti-neutrino Detector (AD) modu...

The Daya Bay Reactor Neutrino Experiment expects to determine the neutrino mixing angle θ ₁₃ with a sensitivity of sin ²(2θ ₁₃)=0.01 in a three-year run. Eight three-zone cylindrical Anti-neutrino Detector (AD) modules with Gd-doped Liquid Scintillator are arranged in two near halls and a far hall. In the outermost zone of each AD, 192 PMTs are mounted in Mineral Oil (MO). The stability of the optical properties of the liquids is very important for controlling the systematic uncertainties of the experiment and thus will be monitored online. The design of a monitoring system for the MO and results from a prototype system is presented. © 2012 Elsevier B.V.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A system design for DSP + FPGA based cache-structured image processing

A system design for DSP + FPGA based cache-structured image ...

引用

2012 2nd International Conference on Computer Application and System Modeling, ICCASM 2012

作者： Liu, Jinhua Zhang, Shuang Li, Shu Xiao, Jing Military Transportatoin University Tianjin 300161 China Engineering and Technical College Chengdu University of Technology Leshan 614000 China Beijing Institute of Oil Research Laboratory of Oil Storage and Transportation Automation Beijing 102300 China Chinese Academy of Sciences Graduate University Beijing 100039 China Xu Zhou Air Force College XuZhou 221000 China

ISBN: (纸本)9789491216008

This essay presents the DSP + FPGA structure based high-performance image processing system. It aims at solving the overtime-processing problem brought by the increasing complexity of images through the cache-structured image-processing driver. This system allows frame-dropping whenever the processing of images runs overtime and achieves one frame. The system simulation result shows in this way the diver achieves higher efficiency than traditional ping-pong mode when dealing with the overtime-processing of images. © The Authors.

关键词： Image processing

来源：评论

学校读者我要写书评

暂无评论

Vision-based mobile robot localization using natural landmarks

Vision-based mobile robot localization using natural landmar...

引用

International Conference on Systems and Informatics (ICSAI)

作者： Xiaodong Xu Yuan Luo Honggang Hao College of Automation University of Electronic Science and Technology of China Chengdu China School of Optoelectronic Engineering Chongqing University of Posts and Telecommunications Chongqing China

Self-localization in unknown environment is one of the most fundamental tasks for mobile robot. In this paper, a novel localization method for mobile robot working in unknown environment is presented by using scale-invariant natural landmarks. Firstly, corner detector was used to detect the interesting points and get the natural land marks, and then a 3D map of the environment was built. Lastly, the mobile robot localized itself by matching the landmarks in the current frame to a database map. Experiments show that global localization and navigation can be achieved in real time.

关键词： Mobile robots Cameras Navigation Robot vision systems Robustness Detectors Image reconstruction

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：