一种基于小波变换与分形编码的新闻图片检索方法*

该方法使用户可以针对不同需要,准确高效地检索到所需的信息,并可根据需要确定所提取的信息数量。对图片进行小波变换,并分形编码,从而实现对图像特征的模糊分级检索,以完成对图片信息的高效管理。     

AutoCAD系统中实现电子图档模糊查寻的方法

本文讨论了在AutoCAD2000系统中通过图纸标题栏和明细表的少数信息模糊查寻电子图档文件的方法及VBA编程思路，介绍了图档标题栏和明细表数据库的结构，给出了标题栏和明细表信息与图档的路径及文件名之间的查寻关系。     

两种新型误差积分模糊控制器设计及其在舰炮随动控制中的应用

本文设计了基于误差积分调整控制规则的模糊控制器和带误差积分前馈的模糊控制器，只要控制规则和参数选择恰当，就能消除系统的稳态误差，实验结果表明这两种控制器确能改善系统的静态性能。     

智能控制在气动比例位置系统中的应用

本文对由比例阀和无杆汽缸组成的气动位置系统在线性化的基础上进行了数学建模，对模型引入白噪声干扰，它通过噪声模型作用与对象输出端，并利用Hammerstein模型模拟了对象的非线性本质，通过计算机仿真研究了基于遗传算法寻优的神经模糊网络控制的应用效果。与实际结果进行比较，仿真效果良好。     

Application of neuro-fuzzy techniques in oil pipeline ultrasonic nondestructive testing

This paper presents a novel approach to the problem of nondestructive pipeline testing using ultrasonic imaging. The identification of the flaw type and its dimensions are the most important problems in the pipeline inspection. Unlike typical methods, a decision based neural network is used for the detection of flaws. We train a generalized regression neural network to determine the dimensions of the corrosions and generate the whole image of both the internal and external walls of the oil pipeline. As an improvement to the detection algorithm, we introduce fuzzy decision-based neural network algorithms for the detection and classification of the corrosions. The simulation and experimental systems results show that these new methods outperform the existing methods.     

First-principles calculation of phase equilibria and phase separation of the Fe-Ni alloy system

Theoretical investigation of the phase equilibria of the Fe-Ni alloy has been performed by combining the FLAPW total energy calculations and the Cluster Variation Method through the Cluster Expansion Method. The calculations have proved the stabilization of the LIE phase at 1：3 stoichiometry, which is in agreement with the experimental result, and predicted the existence of L1 0 as a stable phase below 550 K; this L1 0 phase has been missing in the conventional phase diagram. The calculations are extended to the Fe-rich region that is characterized by a wide range phase separation and has drawn considerable attention because of the intriguing Invar property associated with a Fe concentration of 65%. To reveal the origin of the phase separation, a P-V curve in an entire concentration range is derived by the second derivative of free energy functional of the disordered phase with respect to the volume. The calculation confirmed that the phase separation is caused by the breakdown of the mechanical-stability criterion. The newly calculated phase separation line combined with the L1 0 and L12Eorder-disordered phase boundaries provides phase equilibria in the wider concentration range of the system. Furthermore, a coefficient of thermal expansion （CTE） is attempted by incorporating the thermal vibration effect through harmonic approximation of the Debye-Gruneisen model. The Invar behavior has been reproduced, and the origin of this anomalous volume change has been discussed.     

基于模型参考模糊自适应的电液位置伺服系统鲁棒控制研究

针对电液位置伺服系统存在的参数变化及外力扰动，引入模型参考模糊自适应机构，构成模型参考模糊自适应控制，即MRFAC，仿真实验表明，与传统PID相比，该方法可以有效抑制参数扰动及外力干扰，具有很强的鲁棒性。     

模糊控制在半固态浆料制备装置中的应用

介绍了低转速输送管半固态浆料制备装置的原理和组成，采用模糊控制技术改进了该装置的温度控制系统，并详细介绍了该控制系统的总体设计及软硬件方案。试验证明，模糊控制技术的应用提高了该装置的温度控制效果，实现了良好稳定的铝金属半固态浆料微观组织控制作用。     

铝元素的添加对锆基合金非晶形成能力影响的电子结构模型

通过构建非晶合金的团簇模型，利用离散变分法从电子层次研究了Al元素对Zr-Cu非晶合金中团簇稳定性的影响。结果表明，Al原子的引入提高了团簇中原子间的亲和力，并且随着Al原子数的增加，亲和力增大，导致新的团簇产生，从而破坏了非晶的团簇结构，Al含量对Zr-Al-Ni非晶合金的稳定性的影响可通过Fermi能级处的态密度大小来反映。     

仿人智能比例控制器与PID FUZZY控制算法的仿真分析

对于具有二阶惯性加纯滞后的不同对象，分别运用常规ＰＩＤ控制、Ｆｕｚｚｙ控制以及仿人智能控制算法进行仿真研究，并对各种控制算法的控制效果进行分析比较。结果表明：仿人智能控制的调节品质明显优于常规ＰＩＤ及Ｆｕｚｚｙ控制，具有响应速度快、超调小（甚至无超调）、过渡过程时间短、控制精度高、系统适应性强等优点。