非线性振动

For free oscillation of various nonlinear conservative systems, the analytical approximate periods and the corresponding periodic solutions were established and they are valid for small as well as large amplitude of oscillation.

提出了结构参数发生较大变化时，计算结构的静力响应，固有频率与固有振型的高效的、适用范围广的方法；对非线性保守系统的自由振动，建立了既适用于小振幅又适用于大振幅的近似解析解法。

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。

In chapter 4, using general Riccati transformation and integral average technique: we first investigate the oscillation of a class of nonlinear differential equations under quite general assumptions. The results that we obtained generalize and improve some known oscillation criteria.

第四章利用推广的Riccati变换及积分平均技巧，首先，研究了一类二阶非线性微分方程在一般假设条件下的振动性，所得结果推广和改进了前人的相关结果。

Group theory principles are applied to the calculation of the vibrational spectrum of C_(60) molecule.

将群论原理用于C_（60）分子振动谱的计算，彻底解决了动力学矩阵的降阶问题，并提出了一种非线性拟合的有效方法。

Under a series of harmonic and earthquake wave loadings,the joint opening behaviors and acceleration responses of the arch dam model were tested.

通过振动台输入谐波和地震波对模型拱坝进行动力试验，并运用拱坝非线性分析有限元程序ADAP - 88来进行计算比较，试验结果验证了数值模型的可行性，揭示了带横缝拱坝在地震荷载作用下的反应规律。

To study the oscillatory of solutions to a class of nonlinear neutral hyperbolic differential equation with continuous distributed delay.

研究一类具有连续分布滞量的非线性中立型双曲方程解的振动性质。

In this paper, we consider neutral functional differential equations and study the global existence of their solutions, stable subspaces and unstable subspaces of linear autonomous dynamical systems, local stable manifolds and local unstable manifolds of near hyperbolic equilibrium point of nonlinear autonomous dynamical systems, periodic solutions and oscillation of the neutral equations.

本文主要研究中立型泛函微分方程解的整体存在性，自治线性动力系统的稳定子空间与不稳定子空间、自治非线性动力系统在双曲平衡点的局部稳定流与局部不稳定流，周期解与解的振动性。

In chapter 2, the oscillation of a class of nonlinear hyperbolic equations with continuous distributed deviating arguments is studied.

第二章研究了一类带连续分布时滞变量的非线性双曲方程的振动性。

And the inclination angle on nonlinearly natural vibration characteristic of an inclined cable in plane.

研究斜拉索在平面内的非线性固有振动特性。

In this approach, the integral operator kernel functions is used to realize the nonlinear map from the raw feature space of gear vibration signals to high dimensional feature space.

该方法通过计算齿轮振动信号原始特征空间的内积核函数来实现原始特征空间到高维特征空间的非线性映射。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。