检索结果-南通市图书馆

物理学报 2003年第11期52卷 2723-2728页

作者：王耀南谭文湖南大学电气与信息工程学院长沙410082

提出遗传神经网络控制混沌新方法 .将小扰动技术和周期控制技术结合起来 ,用遗传算法训练神经网络 ,使之成为混沌控制器 .对Henon映射和Logistic映射的仿真结果说明控制器能产生小扰动控制序列信号 ,将混沌振荡转变成规则运动状态 .该... 详细信息

提出遗传神经网络控制混沌新方法 .将小扰动技术和周期控制技术结合起来 ,用遗传算法训练神经网络 ,使之成为混沌控制器 .对Henon映射和Logistic映射的仿真结果说明控制器能产生小扰动控制序列信号 ,将混沌振荡转变成规则运动状态 .该方法无需了解动态系统数学模型 ,具有一定抗噪声干扰能力 ,可将它推广应用到其他混沌系统的控制中 .

关键词：混沌系统遗传算法神经网络控制器小扰动技术周期控制技术控制Henon映射控制Logistic映射

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Quantized Feedback Control of Networked Control Systems

Quantized Feedback Control of Networked Control Systems

引用

2010 Chinese Control and Decision Conference

作者： Qingquan Liu~(1,2),Guanghong Yang~2 1.school of information Science and Engineering,Shenyang Ligong University,Shenyang,110159 China 2.school of information Science and Engineering,Northeastern University,Shenyang,110004 China

＜正＞This paper addresses the feedback control problem of Network Control Systems,which arises in the coding of plant states between controllers and systems where feedback loops are closed using bandwidth limited communication channels.A method,which reduces data packet dropout rate and signal transmission delay,is proposed,based on modern communication theory.A necessary and sufficient condition for the stabilization is derived and a lower bound of data rates over communication channels is given,above which there exists a coding,quantization and control scheme to stabilize control *** proof techniques are mainly based on information Theory.

关键词： Networked control systems(NCSs) Feedback control Data packet dropout and Signal transmission delay

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Stabilization of Networked Control Systems with Data-Rate Limitation

Stabilization of Networked Control Systems with Data-Rate Li...

引用

2010 Chinese Control and Decision Conference

This paper investigates the stabilization problem of Network Control Systems with limited data rates.A new method,which reduces data packet dropout rate and signal transmission delay,is proposed,based on modern communication theory.A condition for data rate over communication channels is derived,in which there are the upper and lower bounds of data rates at which there exists a coding and control law such that delay time and data packet dropout rate are bounded and small enough to stabilize control *** proof techniques are mainly based on information Theory.

关键词： Networked control systems(NCSs) Limited data rates Data packet dropout and Signal transmission delay

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Feedback Control with Communication Constraints

Feedback Control with Communication Constraints

引用

2010 Chinese Control and Decision Conference

＜正＞This paper investigates the stabilization problem for linear time-invariant systems with limited data rates. The zooming quantization scheme is analyzed,which relies on the encoder and controller being initialized with identical internal states.A new control design methodology,which relies on the possibility of changing the sensitivity of the quantizer while the system evolves,is *** quantization scheme can yield global asymptotic stability for linear time-invariant systems.

关键词： Networked control systems(NCSs) Feedback control Quantized measurement and Asymptotic stability

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

基于因式分解的防止欺诈的多秘密分享方案

引用

铁道学报 2004年第4期26卷 79-81页

作者：甘元驹曹刚湛江海洋大学信息学院广东湛江524088 中南大学信息科学与工程学院湖南长沙410075

针对现有的多秘密分享方案不能同时有效解决分发者和分享者欺诈,以及子秘密恢复时计算量大等问题,在基于求解大整数因式分解的难题上,提出了一种有效的解决方案。该方案不仅有效地解决了分发者和分享者欺诈问题,而且每个分享者只需拥有... 详细信息

针对现有的多秘密分享方案不能同时有效解决分发者和分享者欺诈,以及子秘密恢复时计算量大等问题,在基于求解大整数因式分解的难题上,提出了一种有效的解决方案。该方案不仅有效地解决了分发者和分享者欺诈问题,而且每个分享者只需拥有一个秘密份额就能和其它分享者分享多个秘密信息。与其它已有的方案相比,方案的优点在于计算量低和子秘密恢复时采用了并行算法。

关键词：密码学多秘密分享因式分解问题欺骗

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

AN EFFICIENT MOTION ESTIMATION ALGORITHM FOR H.264/AVC H.264/AVC

AN EFFICIENT MOTION ESTIMATION ALGORITHM FOR H.264/AVC H.264...

引用

中国通信学会第六届学术年会

作者： Guo Yanjie~1,Liu Ruifang~2 (1 school of information and Communication Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China 2 school of information and Communication Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China)

Motion estimation plays an important role in the video compression standard,such as H.263,MPEG-2/4 and *** search(FS) is the most common and simple motion estimation algorithm,but owing to the FS algorithm resulting in huge computational complexity,so many fast motion estimation algorithms have been proposed instead of *** the paper,we discuss UMHexagonS algorithm, then we propose a fast ME algorithm based on *** simulation results show that proposed algorithm maintains an unnoticeable quality loss in terms of PSNR on average compared to FS and UMHexagonS but reduces motion estimation time.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

AVO在复杂碳酸盐岩储层中的应用

引用

天然气工业 2004年第12期24卷 54-56,i041页

作者：许多李正文甘其刚成都理工大学信息工程学院

地震资料采集、处理、解释及岩石地球物理等技术的发展 ,推动了AVO技术的广泛应用 ,该技术在碎屑岩中的应用在国内外已有不少成功的实例。碳酸盐储层岩由于本身的独特性质和特点 ,使其充气后 ,vp 没有明显减低 ,泊松比变化不大 ,加之碳... 详细信息

地震资料采集、处理、解释及岩石地球物理等技术的发展 ,推动了AVO技术的广泛应用 ,该技术在碎屑岩中的应用在国内外已有不少成功的实例。碳酸盐储层岩由于本身的独特性质和特点 ,使其充气后 ,vp 没有明显减低 ,泊松比变化不大 ,加之碳酸盐岩相变产生强的各向异性等原因的影响 ,使得AVO技术在碳酸盐储层岩中成功应用的实例不多。文章针对鄂西、渝东的碳酸盐岩储层复杂的特点 ,应用沿目的层的小时窗AVO分析、AVO综合响应标定及交绘图分析、AVO属性对比分析相结合的方法来对该地区的碳酸盐岩储层含气性进行了检测。

关键词： AVO技术碳酸盐岩储层地震资料采集渝东地球物理碎屑岩含气性油气检测岩相国内外

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Non-fragile Control for a Class of Uncertain Time-delay Switched Fuzzy Systems

Non-fragile Control for a Class of Uncertain Time-delay Swit...

引用

2010 Chinese Control and Decision Conference

作者： Yingying Ye~1,Hong Yang~2,Le Zhang~(2,3) 1.school of information Science and Engineering,Shenyang Ligong University,Shenyang 110195,China 2.school of information Engineering,Shenyang University,Shenyang 110044,China 3.school of Electronic and information Engineering,Dalian University of Technology,Dalian 116023,China

＜正＞This paper considers the stability problem for a class of switched fuzzy（SF） time-delay systems.A sufficient condition for the existence of non-fragile state-feedback controllers and the switching law for a class of uncertain switching fuzzy time-delay systems are proposed based on single Lyapunov function technique,under the assumption that the controller gain to be designed has *** corresponding results are all formulated in terms of linear matrix inequalities（LMIs）.Simulation results show the effectiveness of the design method.

关键词： Switched Systems Fuzzy Systems Quadratic Stability Global Model Switching Law

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Backstepping Design of Uncertain Nonlinear Systems Based on Adaptive Fuzzy Approximation

Backstepping Design of Uncertain Nonlinear Systems Based on ...

引用

2010 Chinese Control and Decision Conference

作者： Ping Li~(1,2) 1.College of information Science and Engineering,Huaqiao University,Xiamen,361021 2.school of information Science and Engineering,Northeastern University,Shenyang,110004

＜正＞A novel adaptive fuzzy approach is proposed in this paper to control a class of uncertain strict-feedback nonlinear *** approach employs nonlinearly parameterized fuzzy systems to approximate the unknown nonlinear functions in the design of the controlled system,which removes the restriction that basis functions of the fuzzy systems must be *** a backstepping procedure,an adaptive fuzzy controller is obtained which guarantees that all signals in the closed-loop system are bounded and the output of the controlled system converges to a small neighborhood of the given reference *** main advantages of the proposed approach are that it does not require the fuzzy approximators with known basis functions,and the computation burden of the controller is reduced by managing to decrease the on-liner *** example is included to demonstrate the effectiveness of the approach.

关键词： Strict-feedback nonlinear system Adaptive control Nonlinearly parameterized fuzzy approximation Back-stepping External disturbance

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

A High Performance Dynamic Memory Management Scheme

A High Performance Dynamic Memory Management Scheme

引用

2004 International Symposium on Distributed Computing and Applications to Business, Engineering and Science

作者： Huifu Zhang~(1 2) Fangmin Li~(1 2) 1 school of Computer Science and Engineering Hunan University of Science and Technology Xiangtan 411201 2 school of information engineering Wuhan university of technology Wuhan 430070

＜正＞Dynamic Memory Management takes an important count in most *** with other DMMs,first fit DMM using address-ordered linear list data structure is the most researched and applied,since it tends to enhance program locality,and causes significantly less *** this paper,an efficient scheme suitable for this kind of DMM is proposed which can evidently improve the DMM efficiency, especial memory-releasing efficiency,by caching recently freed *** improvement is testified by theoretical analysis and evaluation result.

关键词： Dynamic Memory Management CACHE address-ordered first fit

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：