查询词典 optimal control

With the purposes to shorten development period of shield control system and avoid the unsafety of imperfect-designed control system when connected directly to the shield and at the same time, for the convenience of optimal design and remote failure diagnosing of the system, it is very important to develop a test bench for the shield control system.

为缩短盾构控制系统的研发周期，避免在控制系统设计不完善时直接与盾构联机所带来的不安全性，同时也为了便于系统的优化设计和系统的远程故障诊断，有必要研制盾构控制系统检测式验台。

This dissertation is mainly concerning digital image watermarking problems. In Chapter 2, a detailed survey on digital image watermarking is presented. In Chapter 3, an optimal scheme is proposed to use Human Visual System model to compute masking function. It will be used to control the strength of watermark signal for optimal embedding. In Chapter 4, we propose a novel watermarking scheme based on lattice vector quantization.

本文讨论了数字图像水印及其在多媒体安全中的应用，主要围绕下列问题进行研究和创新： 1、优化的水印嵌入模型：本文对基于直接序列扩频技术的水印算法进行了改进，根据人类视觉系统感知模型，提出了优化的水印嵌入模型，在不可感知性条件的限制下，使水印的鲁棒性达到最高。

In Chapter 2, a detailed survey on digital image watermarking is presented. InChapter 3, an optimal scheme is proposed to use Human Visual System model tocompute masking function. It will be used to control the strength of watermark signalfor optimal embedding. In Chapter 4, we propose a novel watermarking scheme based on lattice vectorquantization. Some important transform coefficients of the original image are firstlymapped into the nearest neighboring lattice points by using lattice vector quantizer,then watermark signal is added to the lattice points.

本文讨论了数字图像水印及其在多媒体安全中的应用，主要围绕下列问题进行研究和创新：1、优化的水印嵌入模型：本文对基于直接序列扩频技术的水印算法进行了改进，根据人类视觉系统感知模型，提出了优化的水印嵌入模型，在不可感知性条件的限制下，使水印的鲁棒性达到最高。2、基于格矢量量化的图像水印：本文提出了基于格矢量量化的多比特盲水印算法，不需要原始图象就可以实现水印信号的检测和译码。

By means of analysis and calculation of related parameters, the optimal viscous-damper energy coefficient of viscous-damper energy dissipater and the optimal TMD mass of Tuned Mass Damper are respectively obtained. Analysis results show that the two seismic measures are effective in seismic control of large crossing transmission towers.

通过有关参数分析计算，分别得到了粘滞阻尼消能减震和调谐质量减震控制的最优粘滞阻尼系数和最优TMD质量，分析研究表明上述2种减震控制措施皆能明显衰减输电塔线体系的地震响应，具有比较理想的减震效果。

Through adding new state variable and using supplement functions,the problem with restriction conditions was converted into nonrestriction problem.In addition,the dynamic searching method of optimal step coefficient was developed to modify the conventional gradient method,consequently the calculation problem of the multivariable optimal periodic control was able to be resolved better.

通过增加新的状态变量和用补偿函数法，将本课题的有约束条件问题化为无约束条件问题，并提出了最优步长参数的动态搜索法来修改传统的梯度法，从而较完善地解决了多变量最优周期控制的计算问题。

In the conditions of theoretical model of optimal ingredient, the comprehensive evaluation of Pakchoi yield and main qualities was better than that of the control, which was showed the theoretical model of optimal ingredient was truthful and feasible.

在理论模型营养液配方条件下，小白菜的产量和主要品质综合评价优于对照，表明本试验的理论最佳配方是正确的。

After combining LanYingXu stope, the practical problems have found in augment production stripping-ratio and lower conveying capacity of augment barren rock . The detailed study have been done to control the production stripping ratio ,the economic stripping ratio and optimal limit depth in the exploitation of middle and bottom LanYingXu stope .The economic mathematical model has been established and the application has been built in windows visional system. The optimal result can offer the referenced. Basis for mining production ,for organization and management.

并根据兰营徐统一采场后，生产面临的剥采比增大、废石运量增加、运输能力降低、露天开采深度越来越大的生产实际问题，对兰营徐采场中深部开采的生产剥采的控制、经济合理剥采比及最终开采深度进行了详细的研究，建立了经济数学模型，并编制了Windows环境下的可视化的应用程序，计算出了优化结果，为矿山生产、组织管理提供了参考依据。

With the optimal structural control method, a new approach to determine the optimal damping constant of viscous damper is presented.

对拉索-粘性阻尼器系统的动力特性进行了研究，得到了拉索刚度、阻尼器安装高度及阻尼系数等参数对拉索系统模态阻尼比的影响规律；根据最优控制原理，提出了一种确定阻尼器优化阻尼系数的方法，该方法确定的阻尼系数能保证前几阶模态阻尼比得到整体优化，改进了现有的设计方法。

Abstract;;This;article;intends;to;establish;a;proper;taxation;institution,;with;which;the;government;can;control;and;check;business;tax;evasion;in;an;effective;way.;Related;knowledge;of;"zero;sum;two;person;games;theory";is;applied;to;establish;a;game;model;of;taxation;bureau-business.;In;this;model,;the;government,;as;the;drawer-up;of;the;game;rules,;is;by;all;means;capable;to;maximize;the;benefits;of;both;parties;concerned;on;Nash;equilibrium.;With;the;help;of;Mathematica4.1;Software,;an;optimal;policy;of;tax;levy;adopted;by;the;government;is;to;be;found;to;evade;some;negative;impacts;exerted;by;information;asymmetry;and;high-cost;tax;levy,;etc.;On;the;condition;that;business;burden;is;not;worsened,;that;is,;tax;rate;is;not;raised,;this;article;provides;the;optimal;policy;for;government;tax;levy,;so;as;to;increase;tax-levy;efficiency;of;the;government;and;tax;revenue.

运用&二人零和博弈理论&的相关知识，建立一个税务局－企业的博弈模型，在这个模型中，政府作为博弈规则的制定者，完全有能力通过制定相应的博弈规则，而使双方决策在纳什均衡时自己的利益最大化。我们用Mathematica4.1软件来帮助分析理解，寻找政府征税的最优决策，以期规避信息不对称、征税成本高等不利因素的影响。在不增加企业负担即不提高税率的情况下，分析给出政府征税的最优决策，以提高政府征税效率，增加税收收入。

In the non_dimensional time domain,the generalized quadratic performance criterion of error state is transited into the optimal problem of structural parameters,thus to get an optimal parameter system_optimal damping control system with big margin for stability,little number for oscillation,small overshoot and small setting time.

1引言利用优化系统的结构参数，使之输出的动态性能达到最佳程度，传统方法都是在时域或频域中进行，典型的有&ITAE&准则［1］及电子最佳调节理论［2］，基于无量纲时域中的误差状态二次型性能指标的优化方法，是一手种新的最佳参数化方法［3］，可使系统对于输入作用的阻

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。