Structural damage detection using neural network is a problem of mode matching sustantially, including training phase and testing phase, training phase is a process of founding damage mode database, testing phase is a process of damage mode matching, its emphasis and difficulty lies in how to extract characteristic of damage signal efficientfy, that is damage gene.
运用神经网络进行结构损伤检测实质上是一个模式匹配的问题，它包括训练阶段和检验阶段，训练阶段就是建立损伤模式数据库的过程，检验阶段就是损伤模式匹配的过程，其重点和难点在于如何有效地提取损伤信号中的特征量，即损伤因子。
Corner detection based on phase matching of the characteristics of research, a good use.
详细说明：基于相位角点检测的特征匹配研究，很好用的。
The main work of this paper is to design a three-stage power amplifier with the center frequency of 880MHz, 10MHz bandwidth, the output power of 40W for CDMA system. The output stage of this amplifier consists of two single-stage amplifiers connected in parallel. We discuss the matching circuit of the output-stage in detailed, then make S parameter simulation and Harmonic Balance simulation using ADS, the result is P1dB=43dBm with very low ports reflection loss. This power amplifier is linearized using feedforward linearization technique. Because of the high requirements of amplitude and phase balance, vector modulator is used to adjust the amplitude and phase balance, and the least power detection method is used to tune the I/Q coefficient of the vector modulator. Considering the adaptive instrument, the RF power amplifier which fulfils the practical requirement is finally designed and simulated.
优化了放大器结构，构造了平衡输出功放结构，详细讨论了相关匹配电路的方案，然后用ADS软件进行了S参数仿真和谐波平衡仿真设计：所得端口反射系数较小，初步设计结果得到不劣于P1dB=43dBm的输出，然后利用前馈技术对初步结果进行线性化处理，针对前馈系统对幅度和相位平衡度要求比较高的情况，有针对性地引入了矢量调制器调整幅度和相位，并用最小功率检测法对所加矢量调制器的I、Q系数进行优化处理，考虑了系统的自适应控制的手段，最终仿真设计出了满足实际需求的射频功率放大器。
He Yi. Phase matching of a heterodyne detection system.
何毅。外差探测系统的相位匹配研究。
Studies on phase-matching of three wave interaction of uniaxial have been discussed in detail and the expressions of walk-off angle and acceptance angle have been deduced in theory.
详细讲解了单轴晶体中三波互作用的相位匹配计算以及单轴晶体的走离角、允许角的理论推导和表达式。
The harmonic amplitude equation and the generation efficiency of nonlinear optical frequency conversion in quasi-phase matching were discussed.
讨论了准相位匹配技术中的非线性光频转换谐波振幅方程和谐波转换效率。
This kind of electronic protective accessory has phase lack, over-load, stalling protection functions. Matching with different AC contactor, it can be used in kinds of motor control circuits, and achieve automatic control and protective.
产品具有缺相、过载、堵转及故障自锁等保护功能，只要配上不同的交流接触器，就可应用于各种电机的控制电路中，达到自动控制和保护的目的。
The second matching phase is the Schema-Level Matching, which considers the overall structures of both schemas.
第二阶段是纲目层级的媒合，考虑的是这两种资料纲目的整体结构。
Its leading products include: Y series tri-phase asynchronism motor, STY plastic injector motor, multi-speed motor, roller path motor, frequency-adjustable motor and swirl air pump which are widely applied to various power devices as well as matching device.
苏州轻工电机厂专业制造Y系列三相异步电动机和SJY注塑机专用电机及纺织电机、多速电机、辊道电机、变频电机、旋涡气泵等产品，广泛用于各类动力设备，可供出口机械设备配套和进口设备国产化的配套。
In a radio receiver, the generation of a reference carrier with a phase closely matching that of a received signal.
无线接收机种，接收端需要提供一个与接收信号中的调制载波相位相匹配的参考载波。
This image matching technique combined wavelet transform with phase correlation and parabol- oid surface fit. During the measurement, optical probe was driven to the fixed position based on the translation and rotation changes between different measured positions calculated by the proposed technique.
该方法通过应用小波变换、相位相关和曲面拟合技术，分析不同测量位置之间旋转和平移改变量，然后驱动光学测头到达相应的位置，从而使光学测头每次均测量同一位置。
The circuit is connected and disconnected between a main microprocessor signal controlling sensor and an impedance matching network, wherein the impedance matching network is connected with a program-controlled amplifier via a preamplifier and a broad band filter, an output signal envelope detector is connected with a slave microprocessor through a control line and a data bus, the program-control amplifier is connected with a DDS signal generator via a phase lock loop.
是主微处理器控制信号传感器与阻抗匹配网络的接通与断开，阻抗匹配网络经前置放大器、宽带滤波器与程控放大器连接，输出信号包络检测器通过控制线和数据总线与从微处理器连接，程控放大器经锁相环连接DDS信号发生器。
By comparing the non-critical and criticalphase matching in type-Ⅰand type-Ⅱcut crystals, the walk-off effect intype-Ⅰcritical phase matching is discussed.
综合各种因素给出了选择Ⅰ类临界相位匹配LBO作为倍频晶体的结论。
The simulation results show that the use of th e monogenic phase leads to nearly perfect matching.
实验验证，单演相位的应用高效稳定地完成了红外图像的配准。
The concept of the monogenic phase was applied to infrared image feature point matching and achieves infrared image registration.
将单演相位的概念用于红外图像特征点的匹配，完成了红外图像的配准。
QFS type turbogenerators have some original problems, such as large magnetic lenkage at the end winding due to configuration, higher local temperature of stator s end press ring, incapable of leading phase operation and low efficiency of generator, not matching capacity of the 335MW steam turbines etc, it is necessary to uprate and retrofit the 300MW QFS type turbogenerator.
该型发电机组存在着因结构原因端部损耗较大、端部压圈局部温度较高、不具备进相运行能力、发电机效率低以及发电机与改造后的汽轮机容量不匹配等问题，必须进行增容改造。
The first phase is the Element-Level Matching which aims to measurethe similarity of a single table and a single class.
第一阶段是元素层级的媒合，目标是衡量单一一个表格和单一一个类别的相似度。
The circuit in Figure 3 has excellent phase and amplitude balance between the output channels and eliminates some critical component-matching requirements.
图3电路，在输出信道和消除一些危险器件匹配需求之间，具有极好的相位和幅值平衡。
The gain curve in periodically poled LiTaO_3 crystal was calculated for type 0 quasi-phase matching.
根据准相位匹配理论计算了周期极化LiTaO3晶体中0类准相位匹配过程的增益曲线。
A new method of analyzing three waves interaction in nonlinear periodically poled crystals (PP-crystals) on the theorem of quasi-phase-matching, called the vector superposing method is presented.
从准相位匹配的基本原理出发，提出了一种研究周期极化介质中二阶非线性的三波互作用现象的分析方法－矢量叠加法。