一类基于观测器的线性不确定系统的正实控制

本文考虑了一类基于观测器的线性不确定系统的正实控制问题，其中它的不确定性更具一般性．把这类问题转化为带有常量参数的系统的正实控制问题，通过求解线性矩阵不等式得到控制器参数的解，设计的此类基于观测器的控制器，使得闭环系统稳定且扩展严格正实．最后通过仿真算例进一步验证了该控制方案的有效性．     

单时滞倒立摆系统的稳定性分析

对单时滞倒立摆系统方程进行稳定性分析,通过对系统线性化方程的特征方程根分布的分析,给出了时滞量改变对系统稳定性影响的具体结论和公式.适当的滞量值会使倒立摆系统具有良好的稳定性.     

HARMLESS DELAYS FOR UNIFORM PERSISTENCE

1. IntroductionA number of models in ecology can be formulated as systems of differential equations withtime delays. One of the most important problems for this type of systems is to analyze theeffect of time delays on the stability of the systems. This has been done in many papers. In[1], it is shown that if a time delay is incorporated into the resource limitation of the logisticequation, then it will destabilize the system. In [2]--[4], criteria are established under which anequilibrium of…     

力觉临场感系统中的时延环节

利用力觉临场感遥控系统中传输环节的混合参数矩阵，证明了时延对整个系统的影响，描述了２种改善或消除时延影响的方法。针对实际系统进行了分析，得出了增大主操作器阻尼会增加稳定性，而增大从操作器阻尼会增加不稳定性的结论。     

二阶线性中立型有界时滞微分方程非振动解的存在性

研究一类二阶线性中立型有界时滞微分方程非振动解的存在性问题，建立非振动解存在的判定准则。     

Robust Stabilization Control for a Class of Nonlinear Measure Differential Systems with Delay

ＲｏｂｕｓｔＳｔａｂｉｌｉｚａｔｉｏｎＣｏｎｔｒｏｌｆｏｒａＣｌａｓｏｆＮｏｎｌｉｎｅａｒＭｅａｓｕｒｅＤｉｆｅｒｅｎｔｉａｌＳｙｓｔｅｍｓｗｉｔｈＤｅｌａｙ⒇ＹＵＥＤｏｎｇＸＵＳｈｉｆａｎＣｏｌｅｇｅｏｆＩｎｆｏｒｍａｔｉｏｎａｎｄＥｌｅｃｔｒｉｃ...     

一类时滞脉冲微分方程的概周期解

利用锥上不动点定理,研究一类非自治时滞脉冲微分方程的概周期解,给出该系统存在概周期解的一组充分条件.     

关于连续调制PTR三维理论模型的一点修正

计算侧面热交换对样品后表面相位信号的影响，证明在连续调制ＰＴＲ三维理论模型中，样品侧面绝热的假设条件在低调制频率下产生误差，必须进行修正．     

Robust Stability Analysis for Linear Time-delay Systemswith Uncertain Parameters: LMI Approach

1IntroductionDuringthepastfewyears,therobuststabilityproblemoflineartime-delaysystemssubjecttoperturbationshasbeentreatedextensivelyintheliterature.Asaresult,explicitboundsforbothstructuredandunstructuredperturbationshavebeenderived(seeCheresetal.,1991;LuoandVanDenBosch,1997;ninhandAldeen1995;andthereferencestherein).However,inthoseresults,someparametersmustbefirstdeterminedtoobtaintheboundsontheallowableperturbations.Ingeneral,differentselectionapproachesfortheparametersmayresultindifferen…     

New criteria on delayed state feedback stabilization for stochastic systems with time-varying delay

The problems of robust exponential stability in mean square and delayed state feedback stabilization for uncertain stochastic systems with time-varying delay are studied.By using Jensen’s integral inequality and combining with the free weighting matrix approach,new delay-dependent stability conditions and delayed state feedback stabilization criteria are obtained in terms of linear matrix inequalities.Meanwhile,the proposed delayed state feedback stabilization criteria are more convenient in application than the existing ones since fewer tuning parameters are involved.Numerical examples are given to illustrate the effectiveness of the proposed methods.