查询词典 implicit difference scheme

A new switching scheme to the gain of variable structure control signals is proposed. The following important open problems in standard VS-MRAC and MRAC are solved by using the scheme: 1 . a prespecified transient and steady-state performance index for tracking error can be achieved without requiring any information about the plant high frequency gain sign when relative degree of modelled part of plant is one, and 2 . it is shown that as long as the performance indexes are guaranteed for the auxiliary errors, each of which in dynamics is a sub-system with relative degree one, the tracing error will converge to a small residual set in a prespecified transient time when relative degree of modelled part of plant is greater than one.

提出了一种控制增益可切换的变结构自适应律，解决了如下变结构模型参考自适应控制（包括基于调参律的模型参考自适应控制）理论研究中长期没有解决的问题：当对象建模部分相对阶为1、高频增益符号未知且存在非线性输入扰动和未建模动态等情况下，系统跟踪误差可满足预先给定的动态和稳态性能指标；当对象建模部分相对阶大于1且存在非线性输入扰动和未建模动态时，可保证系统跟踪误差在预先给定的过渡过程时间内收敛到一个残差集中； 5。

The induction motor stator-flux-oriented vector control scheme not only reduces the big dependence of its performances on the rotor parameters, such as in the rotor-flux-oriented vector control, but also eliminates the torque ripple produced by Bang-Bang control in Direct Torque Control. So the SFO vector control is a high-performance and robust induction motor control scheme.

异步电机按定子磁场定向的矢量控制克服了按转子磁场定向的矢量控制系统对转子参数的依赖性，又没有直接转矩控制中的砰—砰控制带来的转矩脉动，是一种鲁棒性良好的高性能异步电机控制策略。

Results show that , be compared with the traditional meshing scheme of sabot, after adopting the new scheme, the stress of the dangerous tooth surface of back push sabot can decrease at least 30% and at least 13% of the front push sabot.

结果表明，与传统弹托的啮合方式比较，采用新的啮合方案后，后推式弹托危险齿根面的最大等效应力值减少了30%以上，前推式弹托危险齿根面的最大等效应力减小了13%以上。

After studying the existing secure communication scheme,a new scheme is designed and realized.

通过对现有安全传输方案研究，设计并实现了一种新的网络安全传输方案。

In addition, the reason why the defined contribution funded scheme is more ineffectively than PAYG in China also lies in the fact that self-dependency ratio is higher than institution dependency ratio, and the scheme can't share the advantage of low contribution rate produced by the coverage expansion, which would restrict the corporates' capacity in absorbing labors, retarting economic growth and being unfavoralbe for the solution of aging problem ultimately.

另外，在中国，DC型基金制较为无效的原因还在于自我负担率大于制度赡养率，且不能享受覆盖面扩大带来的费率降低的好处，抑制了企业吸纳劳动就业的能力，从而不利于经济增长和养老问题的根本解决。

Based on Shamir's threshold scheme, a secret sharing scheme on access structures is proposed in this paper.

基于Shamir的门限方案提出了一个访问结构上的秘密共享方案。

The security of this scheme is based on that of the LUC cryptosystem and Shamir's threshold secret sharing scheme.

该方案的安全性是基于LUC密码体制和Shamir的门限秘密共享方案的安全性。

We have proposed an efficient multisignature scheme based on Shamir's IBS scheme.

我们已提出了一种有效的多重计划，基于Shamir的IBS的计划。

The security of this scheme is the same as that of the LUC cryptosystem and Shamir's threshold secret sharing scheme.

方案的安全性是基于LUC密码体制和Shamir的门限方案的安全性。

In this paper, the Shamir's secret sharing scheme is simply introduced, and a new threshold secret sharing scheme based on solving the linear equations is presented.

文章介绍了Shamir秘密共享方案，并设计了一种新的基于线性方程组求解的门限秘密共享方案。

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。