原理

Design of Phase-shift Power Amplifier for Control of Active Magnetic Bearing;2. A digital control of phase-shift circuit;3. Based on laser interferometer theory,Multi-wave interferometer by phase-shift ing method is applied on high-reflective coated optical flatness measurement.

本文以光干涉原理为基础，分析多光束干涉原理特点及其在平面形貌测量中应用可能，提出应用移相方法对被测镀高反膜表面进行调制，得到一系列被调制的干涉图样，经计算机对干涉图样进行自动采集和图像解包裹，获得被测表面的三维形貌数据，并通过实际测试验证了该方法的可行性和科学性。

Development of the instrument includes: optical system, mechanical system, circuit and software design.

在光学部分主要采用了激光诱导荧光检测原理和共聚焦原理，通过合理的机械设计和电路设计，仪器具有较高的集成度、灵敏度和信噪比。

This paper presents multiple dynamic programming and the principle of optimality.

本文在现存单元动态规划原理的基础上，提出并证明了多元动态规划及最佳化原理。

Based on the interference characteristic, the sidelobe cancellation in time is presented and the procedure is designed, which achieves good results that the detection distances of OSMAR is increased by over 40km. At last the dissertation summarizes the application of beamforming in HFSWR, its effect and defects. 5 The dissertation discusses the application of orthogonal expansion method in HFSWR. At first, the traditional OE algorithm is introduced, and the output form is concluded. Then the dissertation discusses the influence of OE method on target signal.

首先介绍了阵列天线的方向图，接着阐述了波束形成的基本原理，然后引入了自适应波束的概念，讨论了确定权函数的准则，介绍了自适应波束形成在高频地波探海雷达中的应用和兼顾目标信号的波束形成；重点介绍了自适应旁瓣对消的原理和权系数计算方法，结合高频地波探海雷达数据特点，设计了在频域用旁瓣对消法消除射频干扰的处理过程，给出了处理结果，并对其效果进行分析，进而提出在时域进行分段旁瓣对消的新方法，设计了处理流程和计算方法，然后给出处理结果，该方法能提高OSMAR探测距离40km以上。

By iteratively combining these two procedures we achieve a way of training the configuration of RBFNN. In addition, the algorithm is very robust with respect to the noise level. Simulation experiments show that the proposed algorithms are sound. In chapter 3, which is the extension of chapter 2, the improvements of the architectures of RBFNNs and the solutions of their relating problems are discussed, Firstly, an new distance metric is advanced and a forward orthogonal least square selection procedure is applied to learning the parameters of classification function and selecting the important input nodes.

首先分析了目前存在的同时确定RBFNN结构和参数的方法的缺陷，在此基础上提出了用基于拉马克的进化学说的进化编程算法来改进算法，以克服某些缺陷；然后针对受到严重噪声污染的系统，如何提高RBFNN的泛化能力的问题，利用基于AIC的适应度函数的改进遗传算法学习结构和参数；最后介绍基于MDL原理的方法，将优化网络的结构和参数分为两个阶段：训练和进化，先自适应地改变RBFNN基函数的中心和宽度，同时训练输出线性权值，再用基于MDL原理的适应度函数的标准GA来优化隐层节点，通过交替使用这两过程达到训练RBFNN的结构和参数的目的，该算法具有较强的鲁棒性。

The application of oscillograph principle in ultrasonic imaging is based on the electronic oscillograph imaging principle.

示波器原理在超声成像中的应用是以电子示波器的成像原理为基础，通过医用超声换能器将以机械波形式存在的超声波转换成同频率的交变的电信号，将该信号以不同的方式输入示波器中，从而形成了不同方式的超声图像。

Osman Bin Afan: I have realized that even though the Unification Principle is new, it is a precious truth that can truly change and renew human beings.

奥斯曼。宾。阿法：统一原理纵然是这麼新，但我已经发现到统一原理是宝贵的真理，可以真正地改变和更新人类。

It is concluded that the working principle of chain-ring overrunning clutch is self-locking.

这是一个基本力学原理的问题，反映人们对自锁的原理和本质存在一些模糊的认识。本文从自锁的基本力学

The focus is laid on whether the working principle of overrunning clutch is self-locking.

引言超越离合器的工作原理是自锁还是别的什么原理？

Using computer graphics and plant morphological principle,the paper proposes the lotus flower modeling algorithm with the fractal technology according to different flower structures.

根据图形学原理和植物形态学原理，按照莲花的形态结构，提出了利用分形技术实现三维莲花的建模。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。