The heterodyning principle is well known in nonlinear optics as difference frequency generation (DFG).

在非线性光学领域,超外差原就是著名的差频产生(DFG)技术。

Neural network(NN)can be trained as a predistorter which linearlizes nonlinear power amplifier with memory.

该方法在收敛速度和精度上都有明显提高。

A boundary layer theory of shell buckling,which includes the effects of nonlinear prebuckling deformations, large .

将壳体屈曲的边界层论推广到复合材料层合剪切圆柱曲压作用的情况。

Azo-dye is a quality second-order nonlinear light-induced chromophore molecular.Silicohydride compound has excellent photoconduction, transparence and non-linearity.

偶氮染料是优良的二阶非线性光学生色分,而硅烷化合物又具有优良的光学光导透明性和非线性。

It shoewd that nonlinear load injects hormonic power to system, and creates the negative error to energy metering.

实验结果表明，非线性负荷向电力系统注入谐波功率，并对电能计量装置产生负误差影响。

The multidimensional modal theory is applied to solve liquid nonlinear sloshing in right circular cylindrical tank in translatory motion.

将多维模论应用到求解作横向运动圆柱贮箱中液体的非线性晃动问题。

To investigate the biomechanical effects of intersegmental stability due to laminectomy,a three-dimensional nonlinear intact C2-C7 FE model was developed.

考察了椎切除术对颈椎节间稳定性的生物力学影响。

A multi-index nonlinear coordinated control scheme for single machine infinite bus power system with superconduction magnetic energy storage (SMES) is proposed.

采用多指标非线性控制设计方法对SMES与汽轮发电机的励磁进行协调控制设计。

Abstract： In this paper, the method and theory of coprime factorizations of nonlinear systems based on the operator theory are introduced.

主要介绍了基于论的非线性系统互质分解方法及其论。

The PSO algorithm is a new evolutionary computation method which is applicable to complex optimization problems that are nonlinear, nondifferentiable and multimodal.

微粒群法是一种新兴的法,它能有效地解决非线性、不可微、多峰的复杂优化问题。

It is greatly senseful to study nonlinear phenomenon of transducer for understanding the active state of transducer exactly and increasing the acoustic-electric index.

本文以实验研究为主，对大功率压电超声换能器的非线性进行了初步研究，以期对实际生产应用提供有益帮助。

Image reconstruction is often converted to the nonrestraint extremum of the nonlinear equations.We have deduced a conjugate gradient algorithm from the extremum of norm.

图像重建常常被转化为解非线性无约束极值问题,通过范数极小化推导出共轭梯度法的一般法。

The ANN starts with simulating cerebric visual thought, and it has wide application foreworld for geological information of underground engineering,taking on strong buzzing, fuzziness, nonlinear.

神经网络方法从模拟人脑的形象思维入手，对于处具有强噪声、模糊性、非线性的地下工程地质信息，它具有广阔的应用前景。

Test results show that nonlinear vibration phenomenon does exist in micromachine vibration beams, and the calculated curves of the formulas derived accords with the measured data.

用推导出的公式得到的计数据与试验数据吻合得较好。

In order to study the influence of structural parameters on the optimal normal load, a microslip model was used to formulate the nonlinear dry friction force.

摘要为了研究阻尼结构参数对阻尼叶片最优正压力的影响，基于微滑移模型，推导出了阻尼器非线性干摩擦阻尼力的计公式。

Using the software of ANSYS, it was carried out nonlinear finite element analysis upon the basic behavior of high-strength concrete shear wall subjected to monodirectional lateral load.

摘要采用ANSYS软件对高强混凝土剪力墙在单向水平荷载作用下的力过程进行了非线性有限元分析。

In order to further discuss the identification of fault after the detection, a nonlinear online neural network approximator is used to provide an estimate of the fault.

为了进一步实现故障特性的辨识与跟踪,讨论了一种利用神经网络对非线性故障模式进行在线逼近的鲁棒故障诊断方法。

This paper shows that under certain conditons it is possible to diminish and even eliminate the nonlinear distorsion of a peak envelope detector by biasing the diode adequately.

本文对一般所谓惰性失真和切削失真同时分析讨论而获得统一公式,并且发现对二极管加适当的正偏压可以减小或消除失真。