Experimental Studies of Adaptive Conscious Systems

ＥｘｐｅｒｉｍｅｎｔａｌＳｔｕｄｉｅｓｏｆＡｄａｐｔｉｖｅＣｏｎｓｃｉｏｕｓＳｙｓｔｅｍｓＣａｉＹｉｆａ（ＤｅｐｔｏｆＭａｔｈ＆ＣｏｍｐｕｔｅｒＳｃｉｅｎｃｅｓＤｕｎｄｅｅＩｎｓｔｉｔｕｔｅｏｆＴｅｃｈｎｏｌｏｇｙＤｕｎｄｅｅＤＤ１１ＨＧＵｎｉｔｅｄ...     

CLASSIFIED ADVERTISEMENTS

ＣＬＡＳＳＩＦＩＥＤＡＤＶＥＲＴＩＳＥＭＥＮＴＳＴｈｅｉｎｓｔｉｔｕｔｅｏｆＳｙｓｔｅｍｓＳｃｉｅｎｃｅｏｆｔｈｅＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃｅｓｉｎｖｉｔｅｓａｐｐｌｉｃａｔｉｏｎｓｆｏｒａ１００－ｐｅｏｐｌｅ－ｐｒｏｊｅｃｔｐｏｓ...     

MD Method in Solving Multiple Criteria Decision Problems Arising from Investment Systems

ＭＤＭｅｔｈｏｄｉｎＳｏｌｖｉｎｇＭｕｌｔｉｐｌｅＣｒｉｔｅｒｉａＤｅｃｉｓｉｏｎＰｒｏｂｌｅｍｓＡｒｉｓｉｎｇｆｒｏｍＩｎｖｅｓｔｍｅｎｔＳｙｓｔｅｍｓＤＵＷｅｎｚｈｏｎｇ;ＣＩＪｉａｎｈｕａ（ＥｃｏｎｏｍｉｃＩｎｆｏｒｍａｔｉｏｎＣｅｎｔｅｒｏｆ...     

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

ＲｏｂｕｓｔＳｔａｂｉｌｉｚａｔｉｏｎＣｏｎｔｒｏｌｆｏｒａＣｌａｓｏｆＮｏｎｌｉｎｅａｒＭｅａｓｕｒｅＤｉｆｅｒｅｎｔｉａｌＳｙｓｔｅｍｓｗｉｔｈＤｅｌａｙ⒇ＹＵＥＤｏｎｇＸＵＳｈｉｆａｎＣｏｌｅｇｅｏｆＩｎｆｏｒｍａｔｉｏｎａｎｄＥｌｅｃｔｒｉｃ...     

Variable Structure Controller Design of Singular Systems with Disturbance in the Case of Incomplete State Information

ＶａｒｉａｂｌｅＳｔｒｕｃｔｕｒｅＣｏｎｔｒｏｌｌｅｒＤｅｓｉｇｎｏｆＳｉｎｇｕｌａｒＳｙｓｔｅｍｓｗｉｔｈＤｉｓｔｕｒｂａｎｃｅｉｎｔｈｅＣａｓｅｏｆＩｎｃｏｍｐｌｅｔｅＳｔａｔｅＩｎｆｏｒｍａｔｉｏｎ￥ＷＥＮＸｉａｎｇｃａｉａｎｄＬＩＵＹｏｎｇｑ...     

Combination of Loosely and Compactly Coupled Integrations of CAD Tools and Its Applications In SAW D

ＣｏｍｂｉｎａｔｉｏｎｏｆＬｏｏｓｅｌｙａｎｄＣｏｍｐａｃｔｌｙＣｏｕｐｌｅｄＩｎｔｅｇｒａｔｉｏｎｓｏｆＣＡＤＴｏｏｌｓａｎｄＩｔｓＡｐｐｌｉｃａｔｉｏｎｓＩｎＳＡＷＤｅｖｉｃｅｓＤｅｓｉｇｎａｎｄＦａｂｒｉｃａｔｉｏｎＰｅｉｇａｎｇＬｉ；Ｊｉａｑ...     

Research of Decision System Analysis for Decision Support

ＲｅｓｅａｒｃｈｏｆＤｅｃｉｓｉｏｎＳｙｓｔｅｍＡｎａｌｙｓｉｓｆｏｒＤｅｃｉｓｉｏｎＳｕｐｐｏｒｔＲｅｓｅａｒｃｈｏｆＤｅｃｉｓｉｏｎＳｙｓｔｅｍＡｎａｌｙｓｉｓｆｏｒＤｅｃｉｓｉｏｎＳｕｐｐｏｒｔ￥ＬＩＵＳｈａｏｊｕｎ；ＨＡＮＣｈｏｎｇｈａｏａｎ...     

The Cost effectiveness and Risk Analysis of Dynamic Conflict Decision Making

１ＴｈｅＣｏｓｔｅｆｅｃｔｉｖｅｎｅｓａｎｄＲｉｓｋＡｎａｌｙｓｉｓｏｆＳｉｍｐｌｅＳｔａｇｅＣｏｎｆｌｉｃｔＤｅｃｉｓｉｏｎＭａｋｉｎｇ１．１ＴｈｅＢａｓｉｃＤｅｍａｎｄａｎｄＰｒｅｍｉｓｅｏｆｔｈｅＣｏｓｔｅｆｅｃｔｉｖｅｎｅｓａｎｄＲｉｓｋ...     

The Fuzzy Incidence Degree in Systems Analysis

ＴｈｅＦｕｚｚｙＩｎｃｉｄｅｎｃｅＤｅｇｒｅｅｉｎＳｙｓｔｅｍｓＡｎａｌｙｓｉｓＣＨＥＮＳｈｉｌｉａｎ（ＭａｔｈｅｍａｔｉｃｓＤｅｐａｒｔｍｅｎｔ．ＱｕｊｉｎｇＴｅａｃｈｅｒ＇ｓＣｏｌｌｅｇｅ，Ｑｕｊｉｎｇ，Ｙｕｎｎａｎ，Ｃｈｉｎａ）ＣＡＯＧｕｉｙｉ...     

Artificial Neural Network for Combining Forecasts

ＡｒｔｉｆｉｃｉａｌＮｅｕｒａｌＮｅｔｗｏｒｋｆｏｒＣｏｍｂｉｎｉｎｇＦｏｒｅｃａｓｔｓ￥ＳｈａｎｍｉｎｇＳｈｉ，ＬｉＤ．Ｘｕ＆ＢａｏＬｉｕ（ＤｅｐａｒｔｍｅｎｔｏｆＣｏｍｐｕｔｅｒＳｃｉｅｎｃｅ，ＵｎｉｖｅｒｓｉｔｙｏｆＣｏｌｏｒａｄｏａｔＢｏｕｌ...     

CONTINUATION METHOD OF NONLINEAR INTEGRAL EQUATIONS

ＣＯＮＴＩＮＵＡＴＩＯＮＭＥＴＨＯＤＯＦＮＯＮＬＩＮＥＡＲＩＮＴＥＧＲＡＬＥＱＵＡＴＩＯＮＳ￥ＹＡＮＧＦｅｎｇｈａｎｇ；ＳＵＮＪｉｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｈｅｍａｔｉｃｓ，ＴｉａｎｊｉｎＵｎｉｖｅｒｓｉｔｙ，Ｔｉａｎｉｉｎ３０００７２，Ｃ...     

BOUND ON SOLUTIONS TO THE GENERAL SYSTEM OF VOLTERRA－TYPE LINEAR INTEGRAL INEQUALITIES IN SEVERAL VARIABLES AND ITS APPLICATIONS TO INTEGRO－PARTIAL DIFFERENTIAL EQUATIONS

ＢＯＵＮＤＯＮＳＯＬＵＴＩＯＮＳＴＯＴＨＥＧＥＮＥＲＡＬＳＹＳＴＥＭＯＦＶＯＬＴＥＲＲＡ－ＴＹＰＥＬＩＮＥＡＲＩＮＴＥＧＲＡＬＩＮＥＱＵＡＬＩＴＩＥＳＩＮＳＥＶＥＲＡＬＶＡＲＩＡＢＬＥＳＡＮＤＩＴＳＡＰＰＬＩＣＡＴＩＯＮＳＴＯＩＮＴＥＧＲＯ－ＰＡＲＴ...     

鲁棒增益调度结构化火箭弹控制系统设计

发动机推力是影响火箭弹模型时变特性的重要因素。首先,基于122 mm火箭弹推导了俯仰、偏航动力学线性化模型,并以线性分式变换来描述。然后,基于鲁棒增益调度设计了结构化的控制器。这种控制器具有矩阵形式的比例-积分结构,在续航段将速度和时间作为调度变量,在无动力飞行段将速度作为调度变量,按照线性控制综合方法整定各特征点的控制器参数,并用结构奇异值验证闭环系统的局部稳定性。最后,对设计的控制器做了仿真分析,结果表明,该控制器对火箭弹模型因推力、飞行状态变化等引起参数摄动的情况具有鲁棒稳定性。     

采用ESO补偿的再入飞行器姿态预测控制方法

针对飞行器再入姿态运动设计了一种基于扩张状态观测器(extended states observer,ESO)的预测控制方法。为了降低系统的阶数,将姿态系统分成姿态角子系统和姿态角速率子系统,分别设计控制器。采用动态逆方法将运动方程线性化,并基于此推导了解析的最优预测控制律。为了提高控制器的精度和鲁棒性,采用ESO对模型误差和不确定扰动进行估计,并在预测控制律中进行补偿。最后证明了算法的稳定性。通过六自由度仿真分析,验证了控制方法的良好性能。     

Recent progress on controllability/observability for systems governed by partial differential equations

<正> The main purpose of this paper is to overview some recent methods and results on controllability/observability problems for systems governed by partial differential equations.First,the authorsreview the theory for linear partial differential equations,including the iteration method for the nullcontrollability of the time-invariant heat equation and the Rellich-type multiplier method for the exactcontrollability of the time-invariant wave equation,and especially a unified controllability/observabilitytheory for parabolic and hyperbolic equations based on a global Carleman estimate.Then,the authorspresent sharp global controllability results for both semi-linear parabolic and hyperbolic equations,based on linearization approach,sharp observability estimates for the corresponding linearized systemsand the fixed point argument.Finally,the authors survey the local null controllability resultfor a class of quasilinear parabolic equations based on the global Carleman estimate,and the localexact controllability result for general hyperbolic equations based on a new unbounded perturbationtechnique.     

ESTIMATION METHOD FOR SOLUTIONS TO GENERAL LINEAR SYSTEM OF VOLTERRA INTEGRAL INEQUALITIES INVOLVING ITERATED INTEGRAL FUNCTIONALS

1. IntroductionThe study of Volterra-type integral inequalities had aroused much research illterest on thepart number of authors. In recent years, various VOlterra inequalities involving iterated illtegralfunctionals have also been investigated. We refer to 11--14] for related results for such inequalitiesin one independent variable. However, there is no result reported in the literature which isconcerned with arbitrary finite systems consisting of such integral inequalities. Obviously suchk…     

基于高阶PI观测器的不确定线性系统鲁棒故障检测设计

针对一类受干扰影响的不确定线性系统,研究了基于高阶比例积分 (proportional integral, PI)观测器的鲁棒故障检测设计问题。通过对一类Sylvester矩阵方程的参数化解,将基于高阶PI观测器的鲁棒故障检测问题转化为具有多约束的优化问题。基于该优化问题的解,给出了具有鲁棒故障检测功能的高阶PI观测器存在的充要条件,并给出受干扰影响的不确定线性系统的鲁棒故障检测设计方法。最后,数值算例及仿真分析结果验证了所提方法的有效性。     

三轴扫描镜数学模型的建立与简化

本文应用拉格朗日方程推导出三轴扫描镜的准确数学模型。这是一个具有复杂非线性和强耦合的系统。对该模型做了线性化处理。简化的模型已在实际系统设计中获得了成功的应用。而准确的模型可作为制定更优良的控制方案和设计更好的控制器的基础。     

复杂液压系统动态特性仿真中的刚性问题研究

针对复杂液压系统动态特性仿真中出现的刚性问题，从基本波压元件的建模入手研究了降低系统模型刚性问题的方法。基于里兹近似法，从分布参数模型出发得到了液压管路的精确近似的集中参数模型；引入了分段的阀口流量计算公式，解决了传统紊流流量方程存在奇点的问题；采用迭代计算、模型降阶和线性化处理的方法，避免了小液压容腔和小阀芯质量引入系统模型时带来的刚性问题。     

快速计算分层粗糙面散射的FBM/SAA算法

为快速获取分层粗糙面的电磁散射特性,提出一种结合前后向迭代算法（forward-backward method, FBM）与谱积分加速法（spectral accelerate algorithm, SAA）的快速算法（FBM/SAA）,该算法的计算量和内存均与粗糙面离散剖分产生的未知量同量级（O(N)）。建立了分层粗糙面上关于未知电流分布的电场积分方程并采用矩量法（method of moment, MoM）将其离散为矩阵方程;在用FBM对矩阵方程进行迭代求解过程中,采用SAA技术加速计算矩阵和矢量乘积以快速求解;将FBM/SAA应用于三层媒质分层粗糙面的双站散射系数的计算,计算结果与传统MoM和FBM相一致,证明了算法的有效性;分析了粗糙面参数不同情况下算法的收敛性,比较了传统MoM和FBM/SAA所耗费的CPU时间。结果表明,在计算较长分层粗糙面的散射时,FBM/SAA具有明显优势。