检索结果-内蒙古大学图书馆

7th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT)

作者： Gudkova, Irina Samouylov, Konstantin Ostrikova, Darya Mokrov, Evgeniy Ponomarenko-Timofeev, Aleksei Andreev, Sergey Koucheryavy, Yevgeni Peoples Friendship Univ Russia Appl Probabil & Informat Dept Moscow Russia Tampere Univ Technol Dept Elect & Commun Engn Tampere Finland

ISBN: (纸本)9781467392839

As it is predicted that mobile traffic demand will reach an astonishing 190 exabytes by 2018, current methods of spectrum allocation and management need to be rethought towards more advanced sharing of frequency bands. To this end, a novel regulatory framework has recently emerged, named Licensed Shared Access (LSA), which enables guaranteed spectrum access for a limited number of sharers. However, realistic LSA band operation may result in its abrupt unavailability, causing traffic delays and even network access failures in case of unsuccessful "evacuation" of a user back to conventional cellular bands. In this paper, we formulate an adequate queuing-theoretical model for evaluating such service failure and interruption probability for users that attempt to operate within a cell of a network with the LSA capability.

关键词： LTE unreliable service queuing system recursive algorithm blocking probability LSA spectrum sharing cellular networks

来源：评论

学校读者我要写书评

暂无评论

Simulation of Phasor Measurement Unit (PMU) in MATLAB 4

Simulation of Phasor Measurement Unit (PMU) in MATLAB

引用

2015 International Conference on Signal Processing And Communication Engineering Systems (SPACES)

作者： Kumar, Dhruba Ghosh, Debomita Mohanta, Dusmanta Kumar Birla Inst Technol Dept Elect & Elect Engn Ranchi Bihar India

ISBN: (纸本)9781479961085

The advent of phasor measurement unit in power system is revolutionizing the conventional grid towards smart grid. Phasor measurement units are extremely expensive devices which takes into account many aspects of the power system that are not disclosed by the manufacturer while estimating phasors of currents and voltage. This paper aims to build a laboratory prototype of PMU which can estimate the phasor updating process of a commercial PMU at the benefit of improved measurement accuracy, reduced manufacturing cost and increased timely information.

关键词： Phasor measurement units (PMIls) wide area measurement system (WAMS) recursive algorithm non-recursive algorithm

来源：评论

学校读者我要写书评

暂无评论

3-D DYNAMIC SIMULATION OF FLEXIBLE FIBRE WITH ARTICULATED BODY SYSTEM 20

3-D DYNAMIC SIMULATION OF FLEXIBLE FIBRE WITH ARTICULATED BO...

引用

20th International Conference on Composite Materials (ICCM)

作者： El Azzouzi, Khalid Binetruy, Christophe Comas-Cardona, Sebastien Barasinski, Anais Duval, Catherine IRT Jules Verne Ctr Technocampus EMC2Chemin Chaffault F-44340 Bouguenais France GeM Res Inst Civil Engn & Mech F-44321 Nantes 3 France AIRBUS Grp Innovat F-44340 Bouguenais France

A new discrete element method is developed to study the dynamic motion of a fibre. The fibre model is represented by an articulated body system. This paper presents the 3-D dynamic modelling of a suspended fibre using recursive algorithms based on the Newton-Euler equations of the articulated body system. The relative acceleration at each connection, which named joint, between two bodies is given as a function of the joint positions, velocities and accelerations. This method guarantees a facility of implementation, fast resolutions and high numerical stability and has a good convergence rate. Results of several dynamic simulations of long fibres subjected to falling and bending tests with one fixed or constrained end are presented.

关键词： Dynamic model recursive algorithm articulated body system Newton-Euler equations

来源：评论

学校读者我要写书评

暂无评论

recursive algorithm of Generalized Least Squares Estimator

Recursive Algorithm of Generalized Least Squares Estimator

引用

2nd International Conference on Computer and Automation Engineering (ICCAE)

作者： Xu, Wenke Liu, Fuxiang Northeast Forestry Univ Dept Sci Harbin Peoples R China

ISBN: (纸本)9781424455690

Based on the problem how to model linear models with different batches of samples and information, the paper raises the method of depositing the stale, the method of bringing into the fresh and the method of depositing the stale and bringing into the fresh of Generalized Least Squares Estimator. Furthermore the estimation formula and the corresponding proof are given. This approach provides flexibility and theoretical basis for data analysis, mining and prediction used in the economy, agriculture and forestry widely.

关键词： linear model Generalized Least Squares Estimator depositing the stale bringing into the fresh recursive algorithm

来源：评论

学校读者我要写书评

暂无评论

recursive Closed-loop PARSIM-E Subspace Identification

Recursive Closed-loop PARSIM-E Subspace Identification

引用

17th IFAC Symposium on System Identification (SYSID 2015)

作者： Hou, Jie Chen, Fengwei Liu, Tao Dalian Univ Technol Sch Control Sci & Engn Dalian Peoples R China

In this paper a recursive closed-loop PARSIMonious subspace identification method using modified innovation Estimation (PARSIM-E) is proposed, which can significantly improve computational efficiency for practical application. By recursively updating the product of the extended observability and controllability matrices, the non-causal parameters included in the triangular Toeplitz matrices are left out to avoid redundant estimation. A propagator is used to extract the system state in order to estimate the system matrices. The convergence of the proposed method is analyzed with a strict proof. Two illustrative examples arc given to demonstrate the effectiveness of proposed algorithm. (C) 2015, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.

关键词： state-space model closed-loop identification recursive algorithm propagator convergence

来源：评论

学校读者我要写书评

暂无评论

A Fast Image Thresholding Method Based on Chaos Optimization and recursive algorithm for Two-Dimensional Tsallis Entropy

引用

JOURNAL OF COMPUTERS 2010年第7期5卷 1054-1061页

作者： Zhang, Xinming Yan, Lin Henan Normal Univ Coll Comp & Informat Technol Xinxiang 453007 Peoples R China

The two-dimensional (2-D) maximum Tsallis entropy method often gets ideal segmentation results, because it not only takes advantage of the spatial neighbor information with using the 2-D histogram of the image, but also has some flexibility with a parameter. However, its time-consuming computation is often an obstacle in real time application systems. In this paper, a fast image thresholding method based on chaos optimization and recursive algorithm for 2-D Tsallis entropy is presented. Firstly, improve the traditional chaos optimization algorithm(COA) so that it can get global solution with lower computation load, then propose a recursive algorithm with the stored matrix variables, finally combine the improved COA and the recursive algorithm to reduce much computational cost in the process of solving the 2-D maximum Tsallis entropy problem. Experimental results show the proposed approach can get better segmentation performance and has much faster speed.

关键词： Image thresholding Two-dimensional (2-D) Tsallis entropy Chaos optimization algorithm (COA) recursive algorithm

来源：评论

学校读者我要写书评

暂无评论

The recursive dynamics and control of robot based on screw theory

The recursive dynamics and control of robot based on screw t...

引用

2015 3rd International Conference on Manufacturing Engineering and Technology for Manufacturing Growth(METMG 2015)

作者： Bing Shao Entao Yuan College of Mechanical Engineering Shanghai Dianji University

The key point of robot dynamics is optimal design and control. The efficiency of robot dynamics has been the goal of researchers in recent years. Lie Algebra and Screws are used to describe dynamic problems in this paper, and an O(N) recursive robot forward dynamic algorithm is given on this. The results show that dynamics described with screws are helpful in high efficient dynamics modeling. The dynamical expressions based on screws are concise and clear. The computed torque control law is used to simulate with the results of dynamics. Compared with the simulation result of PID control law, the computed torque control law has better performance.

关键词： Robot Dynamics Position/force control recursive algorithm Screws

来源：评论

学校读者我要写书评

暂无评论

Design and implementation of chess roles guess probability in military chess computer game

Design and implementation of chess roles guess probability i...

引用

第27届中国控制与决策会议

作者： Jiehong Wu Feng Lv Yuqi Cao Ziheng Zhao School of Computer Shenyang Aerospace University

ISBN: (纸本)9781479970186

In recent years,along with the further study in incomplete information chess—military *** to express and address the incomplete information during the process of game,deciding certain moves strategies to obtain higher winning rate increasingly become a new *** approach using digit to express incomplete information in military chess is proposed in this paper,a model based on guessing probability to address incomplete information in military chess game is designed,and the programming process is *** the National Computer Games Tournament,the game program using this model is stronger than the *** are shown as 6 wins,1 draw,and 1 *** average time of each moving step is shorter than opponent 2 second.

关键词： Probability Weight Chess game recursive algorithm

来源：评论

学校读者我要写书评

暂无评论

A recursive Switched-Capacitor DC-DC Converter Achieving 2^N-1 Ratios With High Efficiency Over a Wide Output Voltage Range

引用

IEEE JOURNAL OF SOLID-STATE CIRCUITS 2014年第12期49卷 2773-2787页

作者： Salem, Loai G. Mercier, Patrick P. Univ Calif San Diego Dept Elect & Comp Engn La Jolla CA 92093 USA

A recursive Switched-Capacitor (RSC) topology is introduced that enables reconfiguration among 2(N)-1 conversion ratios while achieving minimal capacitive charge-sharing loss for a given silicon area. All 2(N)-1 ratios are realized by strategically interconnecting N 2:1 SC cells either in series, in parallel, or in a stacked configuration such that the number of input and ground connections are maximized in order to minimize cascaded losses. Importantly, all ratios are dynamically reconfigurable without disconnecting a single capacitor, all while ensuring optimal capacitance/ conductance relative-sizing. The RSC topology is inherently regular, enabling recursive inter-cell connection and recursive binary-slicing that implement ratio-reconfiguration with minimum complexity and losses. A scalable all-digital binary search controller is employed to perform ratio-reconfiguration among the available 2(N)-1 ratios without using any ratio-threshold generation circuitry. To validate the topology, a 4 bit RSC is fully integrated in 0.25 mu m bulk CMOS using MIM capacitors, achieving greater than 70% efficiency over a 0.8-2.2 V output voltage range with 85.8% peak-efficiency from a 2.5V input supply. Compared to a co-fabricated three-ratio (1/3, 1/2, 2/3) Series-Parallel SC converter, the RSC achieves a 40.4% larger output operating range (from 0.04 to 2.2 V), and fills the efficiency-drops in-between the three-ratios by 8% with a 940 Omega load.

关键词： Binary search DC-DC converter dynamic voltage scaling (DVS) portable electronics power electronics power management pulse frequency modulation (PFM) recursive algorithm switched-capacitor voltage regulator wide voltage range

来源：评论

学校读者我要写书评

暂无评论

recursive Dynamics of Flexible Multi-Body Systems Based on Lie Groups and Lie Algebras

Recursive Dynamics of Flexible Multi-Body Systems Based on L...

引用

The 2nd National Conference on Information Technology and Computer Science(CITCS 2015)

作者： Bing SHAO En-tao YUAN College of Mechanical Engineering Shanghai Dianji University of China

Lie groups and Lie algebras are used to research the recursive dynamics of flexible multi-body systems with the lumped-parameter method. First the adjoint transformations and adjoint operators of Lie groups and Lie algebras are discussed. At the same time, the dynamical modeling method with active and passive joints is built. Then the flexible body is discretized into a collection of rigid bodies. These new bodies and the original bodies are corresponding to active and passive joints. Finally a four-bar model with flexible body is simulated with above method. The simulation results show that with the method can be solved quickly and efficiently. Also geometric nonlinear deformation is considered.

关键词： flexible multi-body systems dynamics recursive algorithm Lie groups and Lie algebras the lumped-parameter method

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：