查询词典 modulation

Switching modulation system, nonideal Buck, modeling, simulation, test

开关调节系统；非理想Buck；建模；仿真；测试

Furthermore, the simulations of high speed modulation in nonidentical quantum wells and quantum dot laser diodes are also available in this thesis.

另外本论文也替相异双重量子井与量子点雷射二极体的高速直接调变进行纯理论模拟，探讨双重量子井与量子点中的直接调变。

Based on chapter two, In chapter three, the method of multiple scales is introduced to the study of the multiple-dimensional nonlinear stochastic systems under random external excitation. Using method of multiple scales, we strictly deduce the equation of modulation of amplitude and phase. The effects of random excitations are analyzed; numerical simulations verify the results. Theoretical and numerical simulations show that when the intensity of the random excitation increases, the nontrivial steady state solution may be changed from a limit cycle to a diffused limit cycle.

在第二章基础上，第三章将多尺度法引入到相应的随机系统的研究中；严格推导了系统的约简方程，用矩方法求出稳态解应满足的方程，获得一些结果；并且数值模拟结果与理论推导的结果是一致的；并注意到，与其对应的确定性系统相比较，系统响应从周期解变为近似周期解，系统的相轨线从极限环变为扩大的近似极限环；随着激励带宽的增大，此扩大的近似极限环的宽度将增大。

By using the non-degenerate TPA absorption process between both of pulses, a novel project if explored for compressing and shaping the self-compression pulse induced by FCA, in which shaping of self-compression can be optimized by adjusting the initial delay time and control pulse energy. In addition, the operations of ultrafast all-optical modulation and logic NOR gate are achieved by utilizing the non-degenerate TPA effect.

应用脉冲之间的非简并双光子吸收过程，探索出了对受自由载流子吸收作用而形成的自压缩脉冲进行压缩整形的新方案，通过调节脉冲之间的初始时延和控制脉冲的能量，可以优化自压缩脉冲的质量；另外，应用此效应，也实现了超快脉冲对连续光场的全光调制和超快逻辑非门的操作，在光调制过程中，发现了色散和初始啁啾都将改变所形成的调制暗脉冲的调制深度。

We have studied modulation instability of linearly polarized light not only in anomalous dispersion regime but also in normal dispersion regime when the intensities along the two birefringence axes are equal.

利用光脉冲在光纤中传播时所遵守的相干非线性薛定谔耦合方程，研究了偏振方向沿两个双折射轴的分量强度相等时，在反常色散区和正常色散区所产生的调制不稳定性。

We have studied modulation instability not only in an anomalous dispersion regime but also in a normal dispersion regime when the angle between the polarized direction and the birefringence axes is arbitrary.

利用光脉冲在非线性双折射光纤中传播时所遵循的相干耦合非线性薛定谔方程，研究了偏振方向与双折射轴成任意角度时，在反常色散区和正常色散区所产生的调制不稳定性。

Throuth computer simulation, we have numerically investigated the effect of pulse walkoff on optical pulse compression based on cross phase modulation in the normal dispersion regime of single mode fibers.

通过数值模拟，分析了脉冲离散效应对单模光纤正群速色散区基于暗孤子交叉相位调制的脉冲压缩的影响，并提出了减轻这种影响的办法。

And our products to the nutritional health of the apple juice, carrot juice, milk, nucleolus as the main raw material, together with a number of other reagents, modulation into a delicious drink.

而我们的产品以营养健康的苹果汁，萝卜汁，牛奶，核仁为主要原料，再加上一些其他试剂，调制成可口的饮料。

An input phase voltage is divided into a main range and a transition range in which new P, M, N conditions and PM, NP, MN transition conditions are defined, some null vector is selected and the condition combination sequence of bidirectional power switches are adjusted in each modulation period to realize the safe, reliable and rapid commutation and the stable operation of the matrix converter.

本发明属于矩阵变换器控制技术，为一种用于矩阵变换器的控制方法，通过把输入相电压划分为主区间和过渡区间、在过渡区间定义新的P、M、N状态和PM、NP、MN暂态以及在每个调制周期内选择特定的零矢量并调整双向功率开关状态组合顺序，实现矩阵变换器安全、可靠、快速换流和稳定运行。

An inductance frequency-modulation displacement sensor is used to measure the deformation with on-line or off-line mode.

采用了电感调频式位移传感器，可对零件的变形进行在线或离线测量。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新