查询词典 disturbance

However, in the research of the decentralized control for composite systems, the interconnections are dealt with as disturbance by use of present methods.

可以说，随着科学技术的进步与发展，控制理论的研究已经进入了一个新的发展阶段。

Some disturbance internal secretion's medicine, like the contraceptive and so on may cause the yellow speckle.

一些干扰内分泌的药物，如避孕药等均可引起黄褐斑。

Based on the equivalent-two-machine-two-area AC/DC parallel system, a time optimal control plan for a second-order oscillation system is developed and a TOC strategy for quickly suppressing interzone disturbance is proposed.

为了快速平息交直流互联电网的区间扰动振荡，基于等值两机两区域系统推导了2阶振荡系统的时间最优紧急直流功率支援控制策略。

It can be said thatblood stasis is the main pathology of DN,which is in line with Chinese medicine in "invalidism must accompany with blood stagnation""invalidism develop into collaterals" The view of blood stasis also match the modern medical point of hemodynamics changes and capillaries disease in patients with DN,such as increased hemorheology general index,blood viscosity and lipids, reduced kidney blood flow,platelet aggregation,sclerosis of blood vessels, renal microcirculation disturbance,even hypercoagulability.

可以说，瘀血阻络是糖尿病肾病的主要病机，这既符合于中医"久病必瘀""久病入络"的学术观点，也与现代医学认识的糖尿病肾病患者血液动力学和肾脏微血管病理学实验中，血液流变学的指数普遍升高、血浆粘度增加、血脂增高、肾血流量减少，血小板聚集、血管硬化，肾微循环障碍，甚至出现高凝状态的研究相当吻合。

In our thesis, contents are organized as following In Chapter 1 we present our topic's internal and overseas research situations, theoretical and practical significance, and introduce the research object and contents, and the main contributions of this dissertation. Chapter 2 reviews the development of the stability results for nonlinear systems and some relevant recent results, which include Lyapunov and LaSalle-Yoshizawa theorems for nonlinear systems, and stochastic edition for stochastic nonlinear systems. Sontag's formula for systems affine in control is presented in the frame of CLF. The concepts of disturbance attenuation and the inverse optimality are also explained in this Chapter. In chapter 3 we present the solvable theorem of inverse optimal gain assignment problem, design the inverse optimal controller and the inverse optimal tracking controller for strict-feedback nonlinear continuous systems with unknown time-varing bounded disturbances and constant unknown parameters using an adaptive backstepping algorithm, which are nonlinear, continuous and are easier to realize. These designs are fully systematic and the algorithm can be directly coded in symbolic software. The results of simulation show the effectiveness of the control algorithms.

论文的结构如下：在第1章中，给出了本文研究课题的研究现状、理论意义和实际应用，并介绍了本文的研究对象、研究内容以及主要贡献；在第2章中，针对确定性非线性系统和随机非线性系统，分别介绍了Lyapunov定理、LaSalle-Yoshizawa定理及其随机版本；对仿射系统，在控制Lyapunov函数框架下，给出了Sontag公式；同时给出了非线性系统扰动抑制和逆最优控制问题的基本概念；在第3章中，针对具有未知时变有界扰动和未知定常参数的一类不确定非线性系统，给出并证明了逆最优增益配置可解定理，使用自适应Backstepping算法和均值定理，系统地设计了自适应逆最优控制器和逆最优跟踪器，这种设计方法可同时获得逆最优控制策略和自适应律，简单明了，仿真结果表明该控制算法的有效性，并给出了性能估计。

The disturbance decoupling by output feedback for regular singular sys- tems with left invertibility is discussed.

利用结构分解技术研究左可逆奇异正则系统的输出反馈干扰解耦问题，给出这一问题存在解的充要条件，同时提供获得输出反馈增益矩阵的方法。

The power supply can acquire real time online voltage signal of electric network and input into inverting system; generate synchronous signal and effective value of amplitude signal, then become SPWM pulse by wave generating chip SA4828. High degree sinus and good anti-disturbance performed power supply inverting can be also realized.

该电源可以在线实时采集电网电压送入逆变系统，实时产生同步信号和幅值有效值信号，通过波形产生芯片SA4828实时产生和采样电压同频同步且幅值可调的正弦脉宽调制脉冲，并采用开关线性复合功率变换技术，实现高正弦度和强抗负载扰动性能的电源逆变。

In the short wave Ionized layer reflection channel, the tropospheric scatter channel, and the moves channel, the clear channel and so on in the actual channel, because of the cloud layer%26rsquo;s, the sierra%26rsquo;s and numbers of high-rise construction%26rsquo;s influence in the city, it can produce the multi- diameters fading, causes the serious mark disturbance, and will limit the speed of the intelligence transmission.

在短波电离层反射信道、对流层散射信道、移动信道、广播信道等实际信道中，由于云层、山脉和城市中林立的高层建筑的影响，会产生多径衰落现象，引起严重的符号干扰，限制了信息传输速率的提高。

This effect is known as a sudden ionospheric disturbance.

这个作用为人所知作为一个突然的ionospheric 干扰。

The geomagnetic disturbance can affect the ionospheric conductivity, but the effect is smaller than that of solar variations.

磁暴时电导率随地磁活动的变化相对于随太阳活动的变化要小，在120？

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！