查询词典 variation method

To the condition of deviation from side path when vehicles are turning and braking, according to the deviation distance, the control strategies and control algorithms of vehicle braking stability by two control methods, yaw moment and active steering, are determined. The fuzzy controller are designed whose outputs can be adjusted online according to the variation of slip rate and dynamic proportionality factor. The simulation results prove that the method of fuzzy control which is based on the yaw meoment and front wheel active steering can improve vehicle braking stability and ability of path tracking.

针对汽车在转弯制动时出现的侧向路径偏离状况，根据偏离量大小，利用横摆力矩和主动转向两种控制模式分别进行汽车制动稳定性控制，确立了两种控制模式下的控制策略和控制算法，设计了模糊控制器，根据轮胎最优滑移率变化状况，对模糊输出变量论域的大小按照动态比例系数进行实时在线调整，仿真实验验证了所提出的基于横摆力矩和前轮主动转向的模糊控制方法能提高汽车制动稳定性和路径跟踪能力。

Model based method has been under more and more investigation because it's robustness and adaptation to the random factor variation of the nature.

统计模型方法由于其鲁棒性和与事物随机变化因素的相适应性而受到越来越多的关注。

In Chapter 2, image restoration algorithm based on variation method is studied.

第二章主要讨论基于变分模型的图像恢复算法。

We established a method for quantitative analysis of methyleugenol and safrole in Asarum hete rotropoides by GC to study their season variation.

对北细辛不同生长期所含甲基丁香酚和黄樟醚用气相色谱法进行了定量分析。

By utilizing the expansion expression of equilibrium point of the system, the homogeneous equation s solution was obtained, and then the nonlinear differential equation was equivalent to its nonlinear Volterra's integral equation of the second kind by the constant variation method.

首先将系统在平衡点附近进行展开，求得其齐次方程的解，然后利用常数变易法将非线性微分方程变为等价的第二类非线性Volterra积分方程。

Usingthis method, the GSH content of Rana nigromaculata tadpoles under different concentrationsof Na2SeO4 and Na2SeO3 were measured. The induce of selenate to the content of GSH intadpoles makes its variation has well time-effect and dose-effect relationship. Thesephenomena demonstrate that GSH is smart to the exposure of selenate, and therefore can beused as a sensitive index to selenate pollution.

采用本法测定黑斑蛙蝌蚪在Na_2SeO_4和Na_2SeO_3不同浓度不同时间暴露染毒下机体GSH含量，硒盐对蝌蚪GSH的诱导使其变化具有较好的时间-效应及剂量-效应特征而表现应激反应提示蝌蚪GSH可对硒盐暴露作出快速灵敏的反应可作为监测硒污染的敏感生物标记。

Finally, applying the current basis function of three-term sinusoidal expansion, the radiation characteristic and input impedance of the vertical and horizontal antennas above lossy ground are analyzed by the method of moments with the variation of frequency, height from the ground and ground parameters.

最后，用矩量法，采用正弦插值基函数，研究地面上方垂直、水平线天线的辐射特性和输入阻抗随着频率、离地高度、地面参数等变化的情况。

Then,shotpoint-receiver pairs which meet reflec-tion law are found by using Snell's law. Finally,prestack depth imaging is achievedby using constraint weighted Kirchhoff integral. This method is adaptable to thevertical and lateral variation...

本方法适应速度的纵向和横向变化，它优于简单的VSP－CDP资料转换成像方法，通过模型和实际资料的成像应用表明，此法不仅成像精度高，而且有利于改善剖面的频率特性。

In Chapter two, it is given of the three-dimensional boundary element and the boundary element space, Sobolev space for the contact boundary element problem with friction; it is proved of existence and uniqueness of the solution by variation inequality for the contact Boundary Element Method matrix equation under two kinds of condition that the contact zone is fixed and the contact zone is increasing along with the load; it is given of the expressionfor the error of the exact solution and the boundary element solution.

第2章，给出三维边界单元及边界元空间、有摩擦接触边界元问题的Sobolev空间，利用变分不等式证明了不变接触区和随载荷可变接触区两种情况下的接触边界元法矩阵方程解的存在唯一性，给出了准确解与边界元解的误差表达式，还证明了三维弹塑性摩擦接触问题凝缩矩阵解的存在唯一性，为三维弹塑性摩擦接触边界元法奠定数学基础。

First of all, modeling image by fractional-order derivative and negative Sobolev space, this paper presents a fractional-order multi-scale variation PDE model, and the proposes the adaptive parameter selection method and obtains the field and scale adaptively algorithm for SAR image denoising.

首先利用分数阶导数以及负指数Sobolev 空间对图像进行建模，建立了分数阶多尺度变分PDE 模型，然后给出了模型参数自适应选择方法，并在此基础上提出了区域、尺度自适应的SAR 图像去噪算法。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。