Delay-dependent robust<Emphasis Type="Italic">H</Emphasis><Subscript>∞</Subscript> control for a class of uncertain switched systems with time delay     

Jia?ShiEmail author  Tie-jun?Wu  Shu-xin?Du 《浙江大学学报(A卷英文版)》2004,5(7):841-850

For linear switched system with both parameter uncertainties and time delay, a delay-dependent sufficient condition for the existence of a new robustH _∞ feedback controller was formulated in nonlinear matrix inequalities solvable by an LMI-based iterative algorithm. Compared with the conventional state-feedback controller, the proposed controller can achieve better robust control performance since the delayed state is utilized as additional feedback information and the parameters of the proposed controllers are changed synchronously with the dynamical characteristic of the system. This design method was also extended to the case where only delayed state is available for the controller. The example of balancing an inverted pendulum on a cart demonstrates the effectiveness and applicability of the proposed design methods. Project (No. 2002CB312200) supported by the National Basic Research Program (973) of China  相似文献   

电-机械延迟的研究现状和趋势     

吴献中  马春莲 《河西学院学报》2007,23(5):85-87

参考国内外的相关文献,阐述电-机械延迟与肌纤维类型、运动疲劳、年龄性别、遗传及环境、肌肉本身状态等关系的研究现状和未来研究趋势.探讨把电—机械延迟运用到实践中,评定运动能力和作为早期运动选材的可靠指标.  相似文献   

时滞对一类变系数SIR传染病模型的影响     

谢于民 《鞍山师范学院学报》2006,8(6):4-7

考虑了一个时滞变系数SIR传染病模型,并获得了含有时滞的下界,且不同于其它文章的系统持久性条件,进一步给出疾病灭绝的充分条件.其目的是讨论变系数及时滞对系统持久与疾病根除的影响.  相似文献   

交通信号实时控制优化模型与算法     

汤志浩  郭洪林 《宁波职业技术学院学报》2007,11(5):12-17

通过对交叉路口交通流到达和排队延误规律的研究,提出了一种新的交通信号控制理论,并建立了以PI值最小为目标的交通信号配时优化理论模型。该信号配时方法与通常采用的单点自适应信号控制方法的区别在于不但考虑了交通延误,而且考虑了停车次数,实现了对交通延误和停车次数两指标的优化,从而保证了以车队形式到达的交通流可以不间断地通过交叉路口。由于以实时交通流的到达规律为依据进行信号优化配时,因此,该信号配时优化模型又是实时自适应交通信号控制优化模型。  相似文献   

避免分组丢失切换方法     

余旭涛  王霄峻  毕光国 《东南大学学报》2003,19(3):212-215

针对基本移动IP协议虽然简单但只适用于大范围、低速的情况，提出了一种新的微观移动IP切换方法——避免分组丢失切换方法．该切换方法通过在基站处增加缓存以及利用IP分组的标识，将切换过程中分组丢失减少至最小．并给出了该切换方法所适用的分层全IP网络结构及其切换过程，对基站缓存的大小、切换带来的网络负荷、切换延时等也进行了分析．仿真和分析结果表明最小分组丢失切换方法适用于快速移动、频繁切换的环境．  相似文献   

Educating students with FASD: linking policy,research and practice          下载免费PDF全文

Julie A. Millar  Janet Thompson  Dorothy Schwab  Ana Hanlon‐Dearman  Deborah Goodman  Gal Koren  Paul Masotti 《Journal of Research in Special Educational Needs》2017,17(1):3-17

Fetal alcohol spectrum disorder (FASD ) is a prevalent neurodevelopmental disability with significant implications for learning and behaviour. International research suggests that the prevalence of FASD in school‐aged children is 2.3–6.3%. In this paper, we address the questions: (1) what is FASD ; (2) what is the prevalence of FASD in schools; (3) what is the impact of FASD ; and (4) why develop special FASD education strategies and programmes? We summarise the 18‐year history of W innipeg S chool D ivision's development of its FASD P rogramme of services, describe the specialised FASD classrooms and then present the results from a consensus‐generating workshop comprised of 36 FASD education professionals, with over 209 years of collective FASD education programme experience, who were asked to identify and reach consensus on best strategies and lessons learned in FASD education programmes. We then suggest that effectively educating children with FASD is critical to get right if positive educational outcomes are to be realised.  相似文献   

一类具连续分布滞量的偶数阶非线性微分方程的振动准则   总被引：1，自引：0，他引：1  

罗李平 《衡阳师范学院学报》2005,26(3):1-3

本文研究一类具连续分布滞量的偶数阶非线性泛函微分方程解的振动性，得到了该类方程的若干振动准则。  相似文献   

电光调制的物理机制     

朱新剑 《甘肃广播电视大学学报》2001,11(3):53-56

电光调制的原理是电光效应，是由外加电场引起媒质折射率的变化而产生的双折射现象，电光效应最重要的是线性电光效应。  相似文献   

高压真空断路弧后延时重击穿现象分析     

姜宏辉  康国权段辉 《鸡西大学学报》2005,5(4):28-29

真空断路弧后延时重击穿现象可能引起危险的过电压，破坏断路器的稳定运行。文中研究探讨了产生此现象的机理和应采取的对策。  相似文献   

二阶中立型微分方程的振动性     

高伟 《衡阳师范学院学报》1999,(3)

研究了一类二阶中立型微分方程,给出了其每一个有界解振动的充分条件．  相似文献