查询词典 variable-density system

In incomplete information system, using variable attribute rough set model, need not to evaluate missing value, we can obtain the irregular decision table without missing value.

在不完全信息系统中，使用变属性粗糙集模型，不必对缺失属性值进行估计，最后得到了不含缺失属性值的不规则决策表。

Based on the HV motor soft starter,the system structure and topology of its variable reactor are studied.

以高压软启动器为原型，对可变电抗器的系统构建、拓扑结构进行了研究，特别是对可变电抗器的等效模型进行了深入分析。

In addition to, we emphatically introduce the multilinear separation of variables, and we expound the general solving process about it, else I solve the variable separation solution of the system about DS correlating the process.

另外还重点介绍了多线性分离变量法，对多线性分离变量法的一般求解过程作了阐述，还结合步骤具体求解了DS系统的分离变量解。

Second, the conventional linear optimal control can make system stabilize at neighborhood of balance point only. In this paper, we introduced a method of control by Artificial Neural Network. And also, identified variable on line. This method enhanced the adaptability of the control.

其次，由于常规的线性最优控制只能在平衡点附近稳定，这里利用人工神经网络在线识别不同运行状况下的各个参数值，离线训练网络，最后用训练成功的网络进行在线控制，实现了系统的大范围稳定。

The nonlinear oscillations in a continuous fermentation model with variable yield are studied by means of the qualitative theory of a differential system.

研究了微生物的生长、产物形成与基质的消耗有关的连续发酵过程，尤其是当发酵液中产物积累到一定程度，就会抑制其继续积累而带来的振荡现象。

The third chapter is about the optimal control for a class of age-dependent competitive population dynamics with diffusion, the continuity properties of the system solution in terms of the control variable is certificated, the Normal cone theory is applied and the necessary conditions of optimal control problem is obtained.

第三章研究了一类年龄相关的具有空间扩散的竞争种群系统最优控制问题，证明了最优解关于控制变量的连续依赖性，应用法锥理论，得到了最优解的必要条件。

At the same time, India, as a regional power in the south of the Asia-European continent and a member of the "nuclear club", also becomes an important variable in the construction of the international relations system.

在20世纪50年代以来的交往中，中国与俄罗斯，中国与印度之间关系都曾从一个极端走到另一个极端，经历过友好、分歧、矛盾甚至边境战争。

The problem of PI controller design for the multi-input and multi-output system is transformed to that of static output feedback controller design via the new state variable. As to the problem of the static output feedback, a new LMI-based sufficient condition of the controller is presented in this thesis. We can gain the multivariable PI controllers just solving one LMI inequality. The numerical example is provided to illustrate the proposed design approach. 3.The H_∞ robust control is able to solve the multivariable problem, also the control problem characteristic of the modeling error, parameters uncertainties and unknown perturbation, Its application research in the power electronics is beginning now. Considering the characteristics of the PWM DC-DC converters, a multivariable PI controllers which is based on H_∞ Performance Index is designed.

通过构造新的状态变量，可以将多输入多输出系统的PI控制器设计问题转化为静态输出反馈控制问题，利用后者的成熟理论来设计控制器；本文在问题转化后采用更为简便的算法，只需通过求解一个LMI不等式，就能求取基于H_∞性能指标的多变量PI控制器参数，实例验证了算法的有效性。3.H_∞鲁棒控制具有处理多变量问题的能力，可解决具有建模误差、参数不确定和干扰未知系统的控制问题；它在电力电子学中的应用研究刚刚开始。

The method of making digital 3D optically variable device and its system .

一种新型数字化衍射光变图像的存贮系统。

By using the basic method of virtual design and motion simulation of mechanical system based on Solid Works, virtual design of the robot of excavating tree stump was completed by synthetically using parametric and variable modeling technology and top-down design method. In case of the carrier was changed, the COSMOSMotion2006 was used to perform the motion simulation and optimized the parameter of the interface and the mechanical arm, by this way the useable of the new frameworks was confirmed, and in favor of reduce the exploiting cycle and exploiting cost.

通过使用SolidWorks软件的机械系统虚拟设计和运动仿真的基本方法，综合运用SolidWorks的参数化、变量化建模技术以及自上向下的设计思路，完成伐根清理机器人及其行走底盘的虚拟建模，并对由于行走底盘的改变而重新设计的接口和机械臂采用最新的COSMOSMotion2006软件进行了运动仿真和参数优化，以确定其机构可用性，有利于缩短产品的开发周期和减少开发费用。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。