查询词典 feedback

Whether an input or output impedance is raised or lowered by feedback depends on the type of amplifier to which feedback is applied, as will be shown in the next section.

通过反馈后输入或输出阻抗是升还是降，取决于所提供的反馈的放大器的类型。在下一节中，我们将讨论这个问题。

Negative feedback circuit is the main body of SAW drive circuit which is composed by operation amplifier and feedback network, its function is to realize output impedance matching and electric circuit stable gain.

负反馈放大器是该驱动电路的主要部分，它由运算放大器加上电阻和电容构成的反馈网络组成，其功能是实现输出阻抗匹配以及保证驱动电路增益的稳定性。

A method to reduce the nonlinear error of a bridge using operational amplifier feedback were introduced,the feedback conditions of canceling nonlinearity were found by circuit analyzing.

采用放大器反馈控制法克服了传感器电桥的非线性误差，通过解析的方法找到了克服非线性误差的放大器反馈控制条件。

In the end, the main content of this dissertation is addressed.In chapter 2, based on the analysis of present vibrators principle and structure, two kinds of transfer functions and frequency response curves of the vibrator, driven by voltage feedback power amplifier and current feedback amplifier, are given separately. And turnover frequencies between different frequency rangs are also given.

第二章分析了标准振动台的工作原理和结构，在此基础上，建立了标准振动台的机械和电气方程，给出了恒压源和恒流源功放激励下的振动台传递函数及幅频、相频特性曲线，列出了不同频段间的转折频率。

Rise time in a feedback picoammeter is a function of the physical or stray capacitance shunting the feedback resistance.

反馈型皮安计的上升时间是反馈电阻上并联的物理电容或寄生电容的函数。

See the component selection table for recommended values of input and feedback resistance as well as feedback capacitance and compensation capacitance.

查看输入和反馈电阻值的元件选择推荐表以及反馈电容和补偿电容。

Switching Power Supply with the traditional distinction between :(1) not only the output voltage feedback, feedback from the average input current;(2) Current benchmarks signal voltage error signal and full-wave rectifier voltage signal sampling the product.

与传统开关电源的区别是：不仅反馈输出电压，还反馈输入平均电流；(2)电流环基准信号为电压环误差信号与全波整流电压取样信号之乘积。

The results in this paper show that two systems can be easily harmonically stabilized under self-feedback and interconnected feedback.

本文结果表明，在自反馈与关联反馈下两个系统之间很容易实现协调稳定。

From the view of torque controlling strategy, the relation between the torque controlling strategy such as the electric current feedback method、 PWM open loop method etc and the vehicle driving way is analyzed firstly, then the conclusion could be drawn that the PWM open loop method has more advantages than the electric current feedback method when they are both used in the same vehicle which is direct driving by hubcap motor. Secondly, based on the electric motor mathematic model and its experiment, a new permanent brushless dc motor phase electric current detector method in which a digital signal processor and single current sensor are used is introduced.

从转矩控制策略角度来看，分析了电流反馈法以及开环PWM电压调速控制方法与车辆的驱动方式关系，得出了电机驱动电压受限的情况下，无论是从对车辆的动力性能影响还是从对车辆的驱动要求来讲，开环PWM电压调速控制方法较电流反馈法更适用于以轮毂电机直接驱动方式的两轮电动车中；其次，根据电机的数学模型以及电机试验波形，提出了一种利用数字信号处理器以及单个电流传感器检测三相永磁无刷电机电枢电流的新方法，这种方法具有较强的适应性、实时性，它可以根据控制系统的要求，适时地提供所需电流数据，是目前许多文章关于无刷电机相电流平波的重要技术基础。

The stability theory of feedback system and isolated vibration of STM is studied, the method of operating point determinated for STM feedback system and the designing project of isolated vibration system for STM were proposed, the unstability problem of inchworm was overcome.

论文研究了STM反馈系统的稳定性和系统隔振的理论，提出了确定反馈系统工作点的有效方法和隔振系统的设计原则，并设计和制作了STM反馈和隔振系统。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐