小振动

In this dissertation, two methods were adopted to build dynamics model for vehicle ride comfort analysis: one is eight freedom vehicle ride comfort differential equation model in which lateral movement of driver and vehicle body was considered. Combined with time domain model of random road input, we got the driver and vehicle's moving displacement. The other method, we built a Forland truck virtual prototyping using ADAMS, it is a 3D machine model, totally with 596 freedom degrees, every factor that influences the vehicle ride comfort was considered, finally complete the time domain simulation on random road input.

本文采用两种方法建立了车辆平顺性分析的动力学模型：8自由度车辆平顺性分析的微分方程模型，考虑了驾驶员和车体的侧倾，结合随机路面激励的时域模型，在B级路面输入条件下，进行了时域仿真求解，得到车辆和驾驶员在汽车坐标系中各个方位上随时间历程的运动位移；利用ADAMS软件建立的福田小卡汽车，共计596个自由度的三维实体整车虚拟汽车模型，全面地考虑了影响平顺性的各种因素，然后通过对路面功率谱的变换生成适合于ADAMS/Tire的路面文件，实现了整车虚拟样机在随机输入激励下，车辆振动模型的时域仿真求解。

The nonlinearities, uncertainties and unknown disturbances, such as second-hand DC motors, vibration effect, variable friction, gear backlash, stick-and-slip and self-made driving circuits, of the proposed platform affect the dynamic behavior very much.

本文提出一神经模糊动模式控制架构并应用於小台控制系统。这个实验平台的非线性、确定性及未知干扰，如：二手的直马达、振动效应、变动的摩擦、齿间隙、平顺运转及自制驱动电，严重影响系统的动态为。

Shanghai Textile Heald Frame Works is the biggest develop and manufacture base for Aluminum Alloy Heald Frame in China.

上海纺织综架厂是全国最大的铝合金综框开发生产基地，生产的喷气、剑杆、片梭、喷水四大类织机综框，代表了当今一流技术，具有高档综框"四大"基本要素：可靠、平稳、低噪、振动小；并具有机构紧凑，刚性强度好等品质，产品主要供应国内各织机制造厂及主要棉纺厂，并出口欧盟，东南亚等地区。

The results show that the ECM potential behaves well in whole internuclear region, and that the ECM not only gives satisfied potentials for smaller diatomic molecules but also generates correct potential energies for heavier molecules like halogen diatomic molecules.

研究表明，ECM势不仅有优秀的物理性质，而且在分子振动全程具有较高的精度；ECM不仅能给出小分子电子态的满意势能结果，而且对于其电子构造和物理及化学性质都有一定特殊性的卤素双原子分子，也同样能给出正确的势能曲线。

Then with the use of general inverse and matrix projection theorem,a new parameter with good identification effect is deduced,which is called projection modulus of residual vector ,and with which the damaged element is easily identi.

为了找到一个对小损伤较敏感的参数，在结构自由振动微分方程基础上，结合损伤结构的测试数据(用有限元模型的计算结果来模拟)，得到残余向量，利用广义逆和矩阵投影定理，导出了一个具有很好识别效果的参数：残余向量投影范数。

Using Fourier series expansion,Laplace transform and state space technique,the exactand closed form TFM solutions of natural frequency and buckling loads of composite cylindricalshells under arbitrary boundary conditions and external disturbances are obtained.

基于线弹性小变形理论，利用Fourier级数展开、Laplace变换和摄动方法，建立了各向同性材料和复合材料薄壁圆锥壳的静力响应、频率响应、自由振动与屈曲特征值问题的渐近传递函数解。

In dry-WEDM, the vibration of the wire electrode is minute due to the negligibly small process reaction force.

在气中电火花线切割中由于加工反作用力是微小的，线电极振动小则可忽略。

The time-frequency analysis of nonstable torsional vibration signal and multiresolution analysis based on wavelets of torsional vibration signal are introduced in chapter 5 and chapter 6 respectively.

第六章着重讨论了小波分析在扭转振动信号的频带分离和噪声滤除中的应用。

Rich in the content of research of circuit breaker on-line working conditon monitoring, this project focuses on some signal disposal and analytic method of circuit breaker on-line working conditon monitoring system, disposing vibration signal and winding electric current mostly, researching on wavelet denoise method and data pretreatment deeply.

断路器在线监测研究的内容十分广泛，本课题着眼于断路器在线监测系统中的一些信号处理和分析方法，主要是对振动信号和线圈电流进行数据分析和处理，同时深入研究小波消噪方法和数据预处理方法。

Use the data of circuit breaker on-line working conditon monitoring of ShaoXing Power Bureau, applicate wavelet analysis theory and all kinds of signal dispoing methods, focus on vibration signal and winding electric current wave, at last, provide the fault diagnose result of circuit breaker, and build circuit breakers standard finger library and fault finger library.

利用绍兴电力局提供的断路器在线监测数据，应用小波分析理论和各种信号处理方法，重点分析振动信号与线圈电流波形，给出断路器的故障诊断结果，并建立起断路器的正常指纹库和故障指纹库。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。