查询词典 quasi linear

For most matrix of A,the linear diffrentiable equations with quasi-periodic finitely differentiable coefficients are reducible.

证明了对大多数的矩阵A，一类系数为有限次可微的拟周期线性常微分方程组是可约的。

By applying the drop testing machine to automatically simulate half-sine pulse,the calculating model was set up to describe the course of half-sine pulse generated by the rubber waveform generator,based on the basic mechanical principle of half-sine pulse generation and non-linear of the rubber waveform generation in the condition of quasi-static compress.

采用跌落式冲击试验机机械模拟半正弦冲击波，以半正弦冲击波形产生的基本力学原理以及橡胶波形发生器在准静态压缩情况下的材料非线性为基础，建立描述橡胶波形发生器生成半正弦冲击波过程的理论计算模型。

Based on this, aim at the disadvantage on Wigner Distribution and Fractional Fourier Transform that can't restrain noise interference effectively when be used to detect Linear Frequency Modulated signals interfered by heavy noises, we proposed a improved WD. Simulation results show that this method can restrain noise interference effectively and improve the ability of LFM signals detection. On the other hand, in multi-component cases, WD suffers from the cross-terms, which may impair some of the auto-terms. In order to separate original multi-component signals into components and reconstruct them separately, we can use the method of optimal filtering in fractional Fourier domain. But this method also has a problem that if signals have aliasing in the fractional Fourier optimal domain as well, the reconstructed signals will be distorted. In this thesis, a novel method of quasi Fourier transform is proposed in order to solve the problem of multi-component signal reconstruction, and have good results.

在此基础上，针对Wigner分布和分数维傅里叶变换在处理高噪声背景下线性调频信号检测的问题时存在不能有效抑制噪声干扰的缺点，提出了改进Wigner分布的办法，该方法能够抑制噪声，提高信号的检测能力；针对Wigner分布在处理多分量非线性调频信号时存在干扰项的缺点，以及分数域最优滤波方法在处理多分量非线性调频信号分离重构问题时存在的局限性，该局限性表现为在对最优分数域上也有信号分量重叠的情况进行处理时重构信号发生畸变，提出了新颖的类傅里叶变换的方法，该方法对在最优分数域上也有信号分量重叠的情况也能处理，得到的重构信号失真很小。

Secondly, the stationary responses of non-linear systems with unilateral constraints are studied by using the quasi-conservative averaging method.

基于非光滑线性系统研究的基础上，借助一种非光滑变换，引进狄拉克函数，把随机单边约束非线性系统转化为光滑随机非线性系统，进而运用拟保守平均方法得到转换的光滑随机系统的平稳响应。

In this paper ,The inertia load disturbance is included in the double loop DC motor control system, Analysis of the load moment of inertia and The width of the linear area of nonlinear saturation relationship,use the method of "quasi-equivalent" modeling to model the nonlinear state space of the DLM with variable load,tested the speed response of the real system, and used an improved genetic algorithm to accurately identify the model's parameters.

本文将惯量负载的扰动纳入直流电机双闭环调速系统，分析了负载转动惯量与饱和非线性的线性域宽度λ的关系，运用&类等效&建模的方法，建立了变负载直流电机双闭环调速系统非线性状态空间模型。

The ambitious, quasi-industrial release Outside (1995), conceived as the first volume in a subsequently abandoned non-linear narrative of art and murder, reunited him with Brian Eno.

雄心勃勃的，准工业释放外（1995年），作为一个后来被遗弃的非第一货量艺术和谋杀线性叙事回归布赖恩伊诺他设想。

Under weaker conditions(without theirhomogeneous conditions,monotonic inequalities and Lipschitz conditions)than that which Iwaniec and other people imposed on some specialsystems(quasi-regular mappings),using Hodge decomposition theoremto construct testing function,after a series of complicated calculation,weobtain the same regularity results as them to a more general non-linearelliptic systems(2):under certain conditions,the very weak solutionsto non-linear elliptic systems(2)are weak solutions.

对一般的方程组（2），我们减弱了Iwaniec等的齐次性条件、单调不等式以及Lipschitz型条件，利用Hodge分解定理来构造试验函数，并进行了一系列复杂的计算，在没有Lipschitz型条件的情况下，也得到了与itz型条件的情况下，也得到了与，即在一定的条件下，方程组（2）的很弱解是弱解。

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