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frequency response     
相关语句
  频率响应
     A Study of Frequency Response of n~+—p Hg_(0.8)Cd_(0.2) Te Photodiodes
     n~+-p型Hg_(0.8)Cd_(0.2)Te光电二极管的频率响应特性的研究
短句来源
     Using two calibration methods, the sensitivity of the coil is about 3.8×10~(-5)V/A and the frequency response is larger than 35MHz.
     用两种方法标定,得到灵敏度为3.8×10~(-5)V/A,频率响应大于35MHz.
短句来源
     FREQUENCY RESPONSE OF n~+-p(Hg,Cd)Te PHOTODIODE
     n~+-P型(Hg,Cd)Te光电二极管的频率响应
短句来源
     The test results show that to obtain satisfactory damping effect, it is an effective method to use the on line frequency response characteristic of excitation system in measuring the parameters of AVR and in the setting of PSS parameters.
     试验结果表明 ,频率响应特性测量是测量微机励磁调节器参数的一种有效方法 ,在微机励磁调节器的 PSS参数整定中 ,采用通过励磁系统在线频率响应特性测量的方法来整定 PSS参数 ,是一个有效的方法 ,可以得到满意的阻尼效果
短句来源
     The nonlinearity detection principle through Hilbert transform is illustrated, and the root-mean-square error between the amplitude curve of the structural frequency response function and its Hilbert transform is presented as the relative index to quantify the nonlinearity of structures.
     阐述Hilbert变换判断结构非线性的基本原理,提出结构频率响应函数幅值曲线和其Hilbert变换后幅值曲线的均方误差值作为衡量结构相对非线性程度的指标,并通过数值仿真分析探讨了Hilbert变换和所提指标在识别结构非线性和损伤方面的应用问题;
短句来源
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  频响
     The frequency response of acoustic signal is 20~20kHz (+ 1、-3 dB), the dynamic range is over 90 dB(A) and the harmonic distortion is≤3‰.
     声音信号的频响为20~20kHz_(-3)~(+1)dB,动态90dB(A计权)以上,谐波失真≤3‰。
短句来源
     The sensor can detect the displacement within 0. 3μm to 1.5mm, the frequency response is 0 to 4kHz.
     该传感器可检测0.3μm~1.5mm的位移量,频响为0~4kHz.
短句来源
     Study on Transparent and Conductive Cdln_2O_4 Thin Films and Measurement of High-Speed Photodetector Frequency Response
     透明导电薄膜CdIn_2O_4的研究和高速光电探测器频响的测量
短句来源
     The experiments show that thereceiving band-width is 1~1200MHz and the frequency response is±1.5dB in frequency-band.
     实验表明,光/电前置放大器的接收频宽在1~1200MHz频率内频响为±1.5dB。
短句来源
     The transducer detects the displacement within 2μm to 4 mm, the frequency response is 0 to 4kHz.
     该传感器可检测2μm~4mm的位移量,频响为0~4kHz。
短句来源
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  频率特性
     FREQUENCY RESPONSE OF YBa_2Cu_3O(7-δ) GRANULAR AND EPITAXIAL FILMS UNDER RADIATION
     光照下YBa_2Cu_3O_(7-δ)多晶膜和外延膜的频率特性
短句来源
     A Tester for Frequency Response Characteristic Based on DDS
     基于DDS的频率特性测试仪
短句来源
     Study on PC-Based Frequency Response Characteristic Measurement System
     基于PC机的频率特性测试系统的研究
短句来源
     The frequency domain variation of the practical forward impulse response and characteristic impedance of transmission line is studied in consideration of the line-loss and parameter frequency response.
     提出先分析已考虑了线路损耗及参数频率特性后的输电线路前向脉冲响应与特征阻抗的频域变化规律,然后利用最小二乘法参数拟合原理与Z变换原理,给出了它们的Z域近似表达式。
短句来源
     Research on Auto-tuning PID Controller Based on Multiple Points Identification for Process Frequency Response
     基于多点频率特性辨识的自整定PID控制器的研究
短句来源
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  频响应
     A linear fitting algorithm is applied to the frequency response of a 10-order high-pass FIR filter with 10 kHz sample rate and a transition band from 800 Hz to 3 800 Hz.
     对采样率为10 kHz,过渡带为800 Hz至3 800 Hz的10阶FIR高通滤波器幅频响应曲线过渡带局部进行线性拟合。
短句来源
     The genetic algorithms are used to optimize the transfer function of the IIR digital filter so that it's frequency response has the slop of nearly -3 dB/oct.
     提出了用遗传算法优化IIR数字滤波器的传递函数,使其幅频响应曲线的斜率逼近-3 dB/oct。
短句来源
     The complex frequency response functions are obtained consequently.
     分别求得二个域中的速度势和各响应量的复频响应函数。
短句来源
     Five kinds of filters (from a to e) are designed, with rectangle-like amplitude frequency response characteristic curve, flat top pass band, nearly 0 dB ripples, and isolation up to 50 dB.
     在此基础上没计了a-e五种滤波器,其幅频响应特性曲线类似矩形,通带顶部平坦、纹波接近于0dB,隔离度可以达到50dB。
短句来源
     Base on the theory of linear systems,the FIR filter should possess a specific frequency response to match the required spectrum of ship radiation.
     由于舰船宽带信号的连续谱在高频段具有-6dB/oct的衰减特性,因此该FIR滤波器的幅频响应也要与此一致,且为线性相位,即该滤波器的频率响应要具有特定的形状。
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  frequency response
The typical frequency response function chart of the whole machine and its sanding parts, as well as its second-order mode charts of contacting roller, were obtained.
      
A piezoelectric actuated prestage driver of hydraulic servo valves for the low-frequency response of electrohydraulic servo valve electromagnetic prestage driver was presented.
      
The characteristics of good linearity, high resolution, and high-frequency response were approved.
      
In the range of 1-150 Hz, the frequency response function (FRF) of the body structure is calculated by a finite element method (FEM) to get the dynamic behavior of the auto-body structure.
      
The methods of filtering require knowledge of the frequency response, which is usually unknown.
      
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Analysis of the low frequency response of automatic balancing D-C amplifier with mechanical chopper is illustrated by a typical circuit in this paper. The analysis of dynamic response of the modulation and the demodulation circuits and the auxiliary carrier wave amplifier have been considered more in details. The analysis is based on solving difference equations since the intrinsic working process behaved by the M-D M circuits using mechanical chopper is more accurately described by difference equation...

Analysis of the low frequency response of automatic balancing D-C amplifier with mechanical chopper is illustrated by a typical circuit in this paper. The analysis of dynamic response of the modulation and the demodulation circuits and the auxiliary carrier wave amplifier have been considered more in details. The analysis is based on solving difference equations since the intrinsic working process behaved by the M-D M circuits using mechanical chopper is more accurately described by difference equation other than by differential equations.

本文結合一个典型线路对带有机械振子的自动稳零直流放大器的低頻特性,进行了分析,并且着重分析了調制解調輔助放大器对緩变信号的频率响应。所用方法是差分方程求解法,因为用差分方程来描述具有机械振子的調制解調线路的固有工作过程,要比用相同的初始条件的微分方程来描述更为准确。文中推导出調制及解調綫路的調制系数k_M、解調系数k_(ДM)以及它們的传递函数。此外,对放大調制波的阻容耦合放大器也进行了分析。分析結果說明,如果放大器耦合迴路的参数选择得合理吋,則此放大器对緩变信号的調制波可作为理想放大器来处理。文中所得結果可作为設計該类型放大器时选择参数的参考。此外,本文对于采用自动稳零直流放大器作运算放大器时可能产生的持續低頻自激振蕩問題,也进行了討論。

With the rapid progress of the electronic art, there has been a steadily increasing demand for still wider-bandwidth amplifiers. The recent introduction of distributed amplification concept has provided a new technique and powerful means for designing amplifiers with top cutoff frequencies far in excess of those previously obtainable with,ordinary amplifier circuits. A distributed amplifier of the low-pass type can easily be constructed to have a uniform frequency response from audio frequencies to frequencies...

With the rapid progress of the electronic art, there has been a steadily increasing demand for still wider-bandwidth amplifiers. The recent introduction of distributed amplification concept has provided a new technique and powerful means for designing amplifiers with top cutoff frequencies far in excess of those previously obtainable with,ordinary amplifier circuits. A distributed amplifier of the low-pass type can easily be constructed to have a uniform frequency response from audio frequencies to frequencies as high as several hundred me using conventional vacuum tubes. Unlike conventional circuits, distributed amplifiers have an attainable gain-bandwidth product which is not limited by shunt capacitance associated with the vacuum tubes and circuit wiring; the high-frequency limit being determined entirely by high-frequency effects within the tube proper.The purpose of this paper is to describe the basic principle of distributed amplification and to show how such an amplifier employing various types of transmission lines may be designed. Practical methods hi design and design details are given for a three-stage distributed amplifier, using fourteen 6AK5 pentodes with a frequency response of 0.1 mo to 140 mo and a gain of 33±1 db.Both the negative mutual-inductance m-derived and constant K artificial delay lines hare been used. The former offers the advantage of a more linear phase characteristic and a more uniform response both in amplitude and delay time.The experimental results corroborate the predictions based on the first-order theory described in this paper.

分布式放大是最近宽频带放大的最大成就,过去多年来电子学所应用的各种宽频带放大方法,其高频部分因受电子管电容和线路的分布电容所限制,不能获得理想的结果,而利用分布式放大的理论,所制成的宽频带放大器,远较一般普通的宽频带放大器,有更为宽阔的频带;从它的设计和构造上来看,也较负反馈的宽频带放大器为简单。制造一架自数千周至数百兆周的分布式放大器,在技术上并没有很大困难。本文拟对分布式放大的原理作扼要的分析;并提出了采用各类型仿真线所构成的分布式放大器的设计方法,并利用该设计方法,试作了一只三级十四管的分布式放大器,其增益为33±<1分贝,频宽自100千周至140兆周。由实验结果证明,采用m导出式低通滤波器所构成的仿真线的分布式放大器,实较用常K式者,具有更佳的相移特性和频率特性,这与理论上的分析是一致的。

This paper gives an expression of the optical frequency response function suitable for both the incoherent and the coherent optical system. Its physical aspect reveals that the frequency response function plays the role of an information selector.

不相干情形反应函数在评价光学成象质量方面所起的作用,已经有过许多研究。本文研究在一般情况下(包括相干不相干和部分相干)反应函数的表示式和它的物理意义,显示出它起着选择传送光学信息的作用。据此证明具有纯位相差的物体可以通过离焦(Defocusing)的方法观察出来,双星的角距也可以用离焦的方法来测量。

 
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