非线性

An iterative temperature field model of cylinder, in which the non-linear steam temperature distributed along axial direction, was got based on two-dimensional transient heat conduction differential equation. Analytical simulation demonstrates not only a rapid solution convergence but a minor error.

在二维圆筒壁非稳态导热的基础上，得到了圆筒壁内蒸汽沿轴向线性分布，随时间非线性变化的温度场迭代计算公式，并与有限元计算结果作了对比，结果表明所得模型计算精度高、计算速度快。

Comparing EMD method with traditional FFT method in the analytical process, HilbertHuang transformation is found to be superior in performance.

基于这种方法编写了非线性信号分析程序，把振动信号分解成多个本征函数，在分析过程中比较EMD方法与传统的FFT方法，通过两种方法的对比分析，体现了基于EMD的希尔伯特一黄变换的先进性。

Comparing EMD method with traditional FFT method in the analytical process, Hilbert-Huang transformation is found to be superior in performance. Structural response of the warship subjected to underwater explosion is simulated numerically, and EMD method is applied to analyzing the structural impulse signals.

该方法不把信号分解成正弦或余弦函数，因此既能分析线性稳态信号又可用于非线性非平稳信号的分析，且避免了高频干扰结果的出现，被认为是近年来对以Fourier变换为基础的线性和稳态谱分析的一个重大突破。

And it is verified by experiment results which are obtained from the analyzer Hannover-XII made in Germany.

但是，实际中定量分析该系统的本质非线性造成的影响常常是非常困难的。

Non-linearity editor system is an executing equipment for TV program anaphase editing based on computer operation flat roof.

非线性编辑系统是以计算机为操作平台的电视节目后期编辑制作设备。

This paper presents a kind of neural networks method which is suitable for nonlinear ANC.

提出一种适用於非线性自适应除噪的神经网络方法。

With the help of nonlinear finite element software ADINA, the distribution pattern and magnitude of back earth pressure of the anchor slab retaining wall with double layered anchor plate with various material parameters were analyzed, and the factors

摘要应用ADINA非线性有限元软件分析各种材料参数下，两层锚定板挡墙在重力荷载作用下的墙背土压力的分布规律及大小，探讨了影响土压力的因素。

And nonlinear finite element numerical simulation is one of the most effective methods among them.

其中，非线性有限元数值仿真方法是目前最为有效的方法之一，也是最符合实际的一种方法。

Because of the non-linearity, time- variability, multi-parameter, intense coupling of the heating process and especially, the random interfere and anfractuosity of process, precision mathematics model is difficult to be established. The routine PID algorithm can not meet the requirement of control.

高岭土回转窑的加热过程中存在非线性、时变性、多参数强烈耦合这些问题，且随机干扰以及过程机理错综复杂，难以建立被控对象的精确数学模型，采用常规的PID算法很难达到控制要求。

Driver system for the stability of nonlinear and non-use of the theory of linear quadratic control law studies, select the ball location, speed and rod angle, angular velocity of the four variables as state variables, output variables for the ball position and bar angle, the establishment of linear state space equation and after the designs of clubs based on LQR control law, the design process simple and easy to realize the control law, simulation results show that the linear quadratic regulator robustness and stability.

球杆系统翻译，求高人针对球杆系统的非线性和不稳定性运用最优二次型理论进行控制律的研究，选取小球位置、速度和横杆角度、角速度四个变量为状态变量，输出变量为小球的位置和横杆的角度，建立状态空间方程并进行线性化后设计了基于LQR的球杆系统控制律，设计过程简单，控制律的实现容易，仿真结果表明了最优二次型调节器的鲁棒性和稳定性。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。