查询词典 feedback amplifier

Black came up with a negative feedback loop, which was designated negative in contrast to the snowballing positive loop of the amplifier.

值得庆幸的是，布莱克设计出了一个负反馈回路，它的作用就是用来抵消放大器的正回路所产生的滚雪球效应。

In the thesis , firstly the problem of static output feedback H∞control was explored for discrete time singular systems. Based on the generalized Riccati inequality and linear matrix inequality, necessary and sufficient conditions were obtained for the existence of static output feedback H∞controllers, which guarantees that the resulting closed-loop system is admissible with its transfer function matrix satisfying H∞norm constraint.

本文首先利用线性矩阵不等式和广义Riccati不等式，给出离散广义系统中存在静态输出反馈H∞控制器，使得闭环系统是容许的且其传递函数矩阵满足H∞范数约束的充要条件。

Therefore, the robust feedback linearization control is obtained.(2) For affine nonlinear systems with parameter uncertainties, a novel nonlinear state observer is constructed. Under nonlinear feedback control based on observed state, the regulated system state is guaranteed to enter and remain in a enough small neighborhood of origin.

对仿射非线性系统，考虑其参数的不确定性，设计了一种新型的非线性状态观测器，通过调节观测器和控制器的参数，可使系统在基于观测状态的控制下，调节状态到原点的一个足够小表示领域内。

Single loop instantaneous voltage feedback control and multiple loop feedback control, which can be realized by digital method or analogue method, are normal control strategies of inverter. The controller's performance of a same control strategy designed by different designers is different This paper makes out uniform analysis and design theory of inverter control strategies with pole-assignment technique of state-space theory for the first time. It is firstly proposed that controller parameters being equal to control system orders is the base of realizing high performance inverter. Design and performance comparability of various controllers is presented with uniform pole-assignment method.

本文首次采用状态空间理论的极点配置技术，对逆变电源的几种控制策略进行了统一的分析和设计，首次提出控制器控制参数与控制系统阶数相等是高性能逆变器控制实现的基础，并通过极点配置这种统一的设计方法对各种控制器进行了设计和性能比较，分析了要考虑的一些非理想因素的影响。

The theory and approach are introduced, and the general expression containing arbitrary parameter is obtained for the feedback gain matrix. This method changes the problem of multi-input system to several problems of single-input. The number is the cycle index of system matrix. Compare with some known results, this method put forward that the least number of unknown entries of the feedback gain matrix is the order of the system matrix.

汽配置问题，得到了反馈增益矩阵的一般表达式，此表达式中含有任意参数，此方法将多输入线性系统极点配置问题转化为个数为系统矩阵循环指数的单输入系统的极点配置问题，进而推导出确定一个反馈增益矩阵的最少元素个数即为系统的阶数。

In addition, algorithms used in PBE were discussed in details, including International Data Encryption Algorithm, Advanced Encryption Standard of U.S., safe Hash function named SHA-1, Pseudo Random Number Generator.The modes of operation in blok cipher,such as Electronic Code Book, Cipher Block Chaining, Cipfertext Feedback and Output Feedback,are described in the thesis.

采用DSP TMS320C5409汇编语言编制了以上各种算法，在DSP上实现了一个口令加密系统，数据加密速度达到3Mb/s以上，并实现密钥的安全管理，能满足个人PC机脱离主CPU加密大量数据的需要。

Through above study, the theoretical analysis of the inherent fault tolerance of feed-forward neural networks has been extended from hard-limit activation functions to differentiable activation functions; 2. By using above method, fault tolerance of discrete Hopfield feedback neural networks have been also analyzed. It means that the above method can be applied not only for feed-forward neural networks but also for feedback neural networks; 3. For the feed-forward neural network with the Sigmoid activation function, Chebyshev Inequality method was presented.

这项研究将以前仅限于对硬限幅作用函数前向神经网络固有容错性能的理论分析推广到具有可微作用函数的前向神经网络； 2 针对离散型Hopfield反馈神经网络，利用上面提出的方法，对其同样进行了容错性分析，得出许多有用的结论和计算公式，说明上面提出的方法不仅适用于前向神经网络，同时也适用于反馈神经网络； 3 针对具有Sigmoid作用函数的前向神经网络提出了一种切比雪夫不等式法。

We will also be looking for feedback on class balance, rate of advancement, tradeskill balance, economy tweaks, and PvP feedback.

我们还希望得到职业平衡，角色成长速度，交易技能平衡，经济调整，PvP等方面的反馈。

On the basic of it chatter of cutting processes is analyzed by speed feedback and displacement delaying feedback and curial condition of stability cutting is discussed. Secondly, dynamic model of deep-hole drilling system with the two degrees of freedom are established in the light of principles of machining chatter in cutting processes.

本文针对深孔加工系统的特点，首先分析了深孔加工的力学特性，并在此基础上，根据金属切削中的颤振现象，对金属切削过程中由于速度反馈和位移延时反馈所引起的颤振现象进行了分析，并分别讨论了稳定切削的临界条件。

The feedback principle raises that any system only by using the feedback information can it realize cybernation.

一、数学教学信息传输系统的基本模式数学教学过程是在教师指导下学生学习数学知识的一种特殊认识过程

As a dominant party,CPC government should play a guardian,supervisee and guarantee role to overcome all the difficulties in the development of charitable cause and bring it into full play in the establishment of harmonious society on policies and regulations basis.

在中国共产党的文献中第一次把发展慈善事业提到&最广泛最充分地调动一切积极因素，不断提高构建社会主义和谐社会的能力&的高度来认识。近年来，社会学界对慈善事业的理论专著发表较多，有鉴于此，笔者不揣浅陋，谈谈自己的认识和见解。

Flow through the land, the land of the scale of operation allows the effectiveness of the land may be raised.

通过土地的流转，土地的规模经营可以让土地的效益得到提升。