A SYNTHESIS METHOD FOR TWO-ORDER UNCERTAIN SYSTEMS: AUTO-STABLE REGIONAPPROACH

1.IntroductionInrecentyears,thesynthesisproblemforuncertainsystemshasbeendeeplystudied.ManymethodssuchasLyapunov,thevariablestructurecontrol,theadaptivecontrolandtherobustcontrolmethodshavebeenproposed[IMS].Sincetheadaptivecontrolandtherobustcontrolmethod…     

非线性退缩抛物型方程组初边值问题的可解性

应用上、下解方法证明非线性退缩抛物组初边值问题当1相似文献   

具有完整性的控制系统设计方法

该文研究线性连续系统的容错控制问题，即设计反馈控制器，使闭环系统对可能的执行器失效具有完整性。该文利用代数方法，直接证明了期望的容错控制器的存在性，并导出了其解析表达式。最后，用数值例子说明这种方法的直接性与简单性。     

广义系统的某些性质

本文定义了广义系统的消失性,并给出了判别消失性的充要条件,进而给出了广义系统的闭环谱与其动态补偿器的谱不相交的充要条件.最后利用广义系统的一种特殊分解给出了广义系统脉冲可控的充要条件.     

节能气动系统数学模型的改进

作者曾提出一种节能近50%的节能气动系统,进行了理论与实验研究。本文重新定义特征时间 T_m~″和有效面积比 a_(?)~″,改进了它的退回阶段Ⅲ的动特性数学模型,使之能更准确地描述系统的真实特性,仿真结果与实验结果更趋一致。     

解常微分方程初值问题的一类混合单步法

本文给出一类解常微初值问题的混合单步法。与现有的线性单步多导法相比，利用相同阶的导数信息本文的方法却能获得更高的阶，并且其中相当一部分具有Ｌ－稳定性Ａ－稳定性。本文首先给出方法的一般构造方法，然后给一些实用的特例，最近对方法的实际使用也略作了讨论。     

Application of the Constrained Predicated Nets and Interval Logic to Production Systems

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AVAILABILITY ANALYSIS OF THE QUEUEING SYSTEM GI/PH/I WITH SERVER BREAKDOWNS

In the existing literature of Repairable Queueing Systems (RQS), i.e., queueing systems with server breakdowns, it is almost all assumed that interarrival times of successive customers are independent, identically exponentially distributed. In this paper, we deal with more generic system GI/PH/1 with server's exponential uptime and phase-type repair time. With matrix analysis theory, we establish the equilibrium condition and the characteristics of the system, derive the transient and stationary availability behavior of the system.