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Secondly, in view of the identification problem after the change of MRAPC structure, the research has been extended to a kind of continuous system with time delay, and the robust convergence analysis for this model reference adaptive identification algorithm has been given. Using the intermediate value theorem in this analysis, the approximate problem in original analysis has been solved partly.

2针对MRAPC算法结构改变后产生的自适应辨识问题,考虑一种更一般的具有实零极点的时滞连续系统的模型参考自适应辨识算法,作者分析了该算法的鲁棒收敛性,在运用微分中值定理的基础上,解决了原有的收敛性分析中存在的近似问题。

Main contents and conclusions are: 1 The ionization current was measured continuously by a charge-integration method with a computer after the introduction of radon into the chamber.

主要内容及结论:1充氡后利用计算机连续进行电离电流累积测量,得到了精细的电流随时间的变化曲线,可清楚看出氡及其子体的生成衰变造成的电离电流的生长—稳定—衰减过程,与理论计算值进行了比较,由电离电流衰减速度的变化得出氡吸附作用的影响,并测量到电离室冲洗后氡的反扩散现象;2由已知活度的标准源定出相对测量的刻度系数K值,K=24.62 Bq/pA,对同一个监测源以半年为周期进行多次测量后得出稳定性符合要求;3通过测量电离电流和气压的关系曲线以及不同气压下的饱和曲线,确定了常规的工作条件;4测量了盐酸清洗电离室内表面降低本底的效果;5不确定度分析表明相对测氡的扩展不确定度(k=2)小于5%,由本底涨落得出探测下限为0.5 Bq;6理论上对壁损失修正进行了计算,实验上保持电离室工作在饱和区的情况下,测量了不同气压下电离电流的变化,从中得出了壁损失随气压变化的规律,可以看出,电离电流的实测值和计算值随气压变化规律基本一致;当气压大于125 kPa时,端效应等其它因素造成的影响不大于2%,因而在此工作条件下,测量电离电流后通过计算修正壁损失可以实现近似的绝对测氡,提出了进一步提高绝对测量准确度的方法。

In combination with the crushed rock slope as an example, the allocation of an anchorage force on longitudinal beams and transverse beams is calculated by adopting the distribution coefficient law of the nodal form at first. Then the internal forces of the lattice beam are calculated respectively through the software on the basis of Winkler elastic foundation model and the semi-infinite foundation model, and then compared with the internal forces which are based on simplified foundation pressure calculation. The active pressure of rock is calculated approximately by Ranking soil pressure theory in the working stage. Sequentially, the reinforcing bars are disposed by two-stage's averagely calculated values.

以破碎岩质边坡为例,采用节点荷载分配法计算了锚索锚固力在格构梁纵、横梁之间的分配比率,然后基于Winkler弹性地基模型和弹性半空间地基模型分别计算格构梁在张拉阶段的内力,并与采用简化的地基反力计算值对比;采用朗肯土压力理论近似计算在工作阶段主动岩体压力,将地梁视为在线性分布力作用下倒置于坡面上的连续梁,按力矩分配法计算地梁内力,取两阶段计算平均值进行配筋。

In this paper the stress analysis solution of parallel circular tunnels in elastic ground under any coefficient of lateral pressure is derived, and the stress field and displacement field of parallel circular opening subjected to continuous boundary stresses are first solved, and then the ground pressure and the internal force in lining are obtained, using the displacement compatibility equation between linin...

先求得连续洞周边界应力条件下双圆形洞室的应力场和位移场;再利用衬砌和围岩界面位移协调方程,获得平行圆形隧道的地层压力和衬砌内力公式,并可考虑开挖面的三维效应和洞室自由位移等因素。根据结论公式,对隧道间距、地层性质、衬砌厚度等诸因素进行了讨论,得到了单因素的一般规律,在此基础上,提出了平行圆形隧道最小间距的近似方法,并在某工程中予以应用,得到了满意的结果。本应力分析方法在平行圆形隧道的设计和施工中供作参考。

A continuum model was established by introducing Newton stress formula into the elastic-plastic model to describe the deformation behavior of material in bonding zone. Based on the model, the mechanism of plastic deformation and the influence of detonation velocity on plastic deformation were analyzed and compared with experiments.

该文引入牛顿应力公式到弹塑性模型,以近似描述结合区材料行为,建立了连续介质模型,对波状结合区的塑性变形及爆轰速度对塑性变形的影响进行计算分析,并与试验结果对比。

Therefore, to the subsample's observation of continuous random parent population, if its material function can not be gotten easily the presented method can be used to approximate its distribution function, and.

因此对连续型随机样本母体中的简单随机子样的观察值,在不易得到其具体分布的情况下,可用此方法来近似求出其分布函数并可达到很好的逼近效果。

Therefore, to the subsample's observation of continuous random parent population, if its material function can not be gotten easily,the presented method can be used to approximate its distribution function,and good approximation effect can be achieved.

因此对连续型随机样本母体中的简单随机子样的观察值,在不易得到其具体分布的情况下,可用此方法来近似求出其分布函数并可达到很好的逼近效果。

Therefore, to subsample"s observation of continuous random sample parent population, if we can"t get its material function easily, or we dont know its density function, we can use this way to approximate its distribution function. And these methods can achieve good approximation effect.

对连续型随机样本母体中的简单随机子样的观察值,在不易得到其具体分布或不知道其密度函数的情况下,可用此方法来近似求出其分布函数并可达到很好的逼近效果。

Meanwhile, this paper systematically summarized the present fractional-order control theory results distributed mostly in such aspects as continuous and discrete time domain analysis, approximated numerical analysis, common frequency domain analysis, plane locus method based on variable transposition, etc, and became an effective foundation of forming a complete control and system theory for fractional-order control systems.

同时,论文对当前国内外已有的分数阶控制理论成果进行了较为系统的整理,主要集中在连续和离散时间域分析、近似数值分析、一般复频域分析、基于变量变换的平面根轨迹分析等方面,具有综述性质,是建立一套完整的分数系统控制理论与系统理论的有效基石。

Adopting the method of discontinuity bypass mapping,the Poincare mapping of Jeffcott model near a grazing orbit was estimated as a four-dimensional mapping with square-root compressing or stretching at one direction,from which many chaos motions were found by researching the mapping.

采用不连续穿越映射技术,Jeffcott碰摩转子系统的映射在擦边碰撞附近可以近似为在一个方向上有平方根伸缩的四维映射,本文对此映射的动力学行为进行了研究,而且发现了有大量的混沌现象存在。

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推荐网络例句

Results showed that 0.01g/mL extract of Oxalis corniculata L. had obvious antimicrobial effect on S. aureus, but all extract of Oxalis corniculata L has not any antimicrobial effect on E.

结果表明,0.01g/ml的提取物对摇床培养的金黄色葡萄球菌生长具有明显的抑制作用;但各种浓度的提取物对摇床培养的大肠杆菌生长均无抑制作用。

This will be totally different from Zaro's texture mod, it will be desaturated, dirty etc.

这会和Zaro的那个材质补丁有很大不同,这边是更多的不饱和色,整个都灰扑扑的。

This will be a major step forward for our country's aerospace technology.

这将是国家航空科技的一个重大的进步。