頻率特性測量 的英文怎麼說
中文拼音 [bīnlǜtèxìngcèliáng]
頻率特性測量
英文
frequency characteristic measurement- 頻 : Ⅰ形容詞(次數多) frequent Ⅱ副詞(屢次) frequently; repeatedly Ⅲ名詞1 [物理學] (物體每秒鐘振動...
- 率 : 率名詞(比值) rate; ratio; proportion
- 特 : Ⅰ形容詞(特殊; 超出一般) particular; special; exceptional; unusual Ⅱ副詞1 (特別) especially; v...
- 性 : Ⅰ名詞1 (性格) nature; character; disposition 2 (性能; 性質) property; quality 3 (性別) sex ...
- 測 : 動詞1. (測量) survey; fathom; measure 2. (測度; 推測) conjecture; infer
- 量 : 量動1. (度量) measure 2. (估量) estimate; size up
- 頻率 : frequency; rate
- 特性 : characteristic(s); character; performance; features; properties; behaviour; response; character...
- 測量 : measure; survey; gauge; meter; measurement; measuring; surveying; mensuration; metering; gauging;...
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This text divides into five chapters altogether : chapter one in the introduction, have introduced the common sensor of displacement, has pointed out the fine characteristic of hall ' s sensor, put forward the basic task ; chapter two have introduced the basic operation principle of hall ' s component ; chapter three introduce hall temperature performance, electromagnetic characteristic, zero error, frequency characteristic and these parameter commonly used compensation method and hall simple application of component ; chapter four having recommended the measurement principle of the feedback servo mechanism, systematic implementation method, the experimental result has appeared, structure the mathematics model, and has analysed the error ; chapter five have pointed out the developing direction in the future while looking forward to
本文共分為五章:第一章緒論中,介紹了常見的位移傳感器,指出了霍爾傳感器的優良特性,提出了基本任務;第二章介紹了霍爾元件的基本工作原理;第三章介紹了霍爾元件的溫度性能、電磁特性、零位誤差、頻率特性以及這些參數常用的補償方法和霍爾元件的簡單應用;第四章介紹了反饋隨動機構的測量原理,系統的實現方法,給出了實驗結果,構建了數學模型,並對誤差進行了分析;第五章展望中指出了今後的發展方向。Then the measured frequency characteristic can be converted to high accurate transfer function with curve fit method, rational initial parameters choice and fitting in different frequency range method
使用曲線擬合方法,輔助以合理的初始參數選取及分段擬合方法,將測量得到的控制對象頻率特性轉化為高精度的傳遞函數。In vivo measurement of the rabbit brain impedance frequency response and the elementary imaging of electrical impedance tomography
在體兔腦組織電阻抗頻率特性測量及電阻抗斷層成像Malfunctions can be diagnosed using infrared thermography without affecting the work state of tested equipments, thus the diagnostic accuracy can be improved. infrared thermography, just as often, improves electronic fault diagnosis by isolating the malfunction to specific areas of the circuit board, what is more, it usually does point directly to the failing component. thermography even can rapidly diagnose up to hundreds of elements on one pcb at one time, without requiring the operator to know the circuit principle very well, which can reduce the workload greatly
紅外故障檢測儀可以對電子設備進行在線測量,檢測時不會影響待測設備的正常工作和頻率特性,這對高頻電路的檢測尤其方便,且能提高診斷的準確性;他通常能指出電路板上的故障區域,甚至經常能直接找出故障元器件,這樣就提高了維修質量;並且能在不需要檢測人員對電路原理有深入理解和分析的情況下,對同一塊電路板上的數十隻甚至數百隻器件同時進行快速診斷,這就大大減少了維修人員的工作量,提高了維修人員的工作效率。Measurement methods of a - chain and b - chain electro - acoustic frequency response of motion - picture control rooms, review rooms and indoor theatres
電影錄音控制室鑒定放映室及室內影院a環b環電聲頻率響應特性測量方法Superconductivity - electronic characteristic measurements - surface resistance of superconductors at microwave frequencies
超導性.電子特性測量.微波頻率下超導體的表面電阻Laser - diode end - pumped solid - state laser has many advantages, including high efficiency, good beam quality, high frequency stability, narrow line width, long lifetime, compact configuration, convenient for using et al. especially, single - frequency solid - state laser sources are required for many fields of fundamental research and scientific application, such as gravity - wave detection, coherent laser radar, coherent communication and fiber sensing
激光二極體泵浦的固體激光器具有全固態、小型化、效率高、使用方便等優點而受大家的廣泛關注,尤其是實現單頻運轉的全固態激光器以其優良的頻率特性和輸出功率穩定性可廣泛應用在相干信息處理、頻率計量、量子光學、引力波測量和量子信息等研究領域。We give ptr ' s amplitude and phase signal of one dimension based on the theory of ptr, discuss the ptr ' s signal ' s frequency characteristic, and a method for measuring thermal diffusivity of opaque materials is introduced. then, we study on anisotropic materials " thermal conductivity, the temperature field and thermal conductivity tensor of anisotropic materials is theoretically deduced from the theory of ptr, and is proved by the experiment
從光熱輻射理論出發,推導出一維情況下ptr信號的振幅和位相表達式,討論了光熱信號的頻率特性,介紹了一種用ptr技術測量不透明材料熱擴散系數的優化方法;接著研究分析了各向異性介質受調制激光束輻照下產生的光熱信號,在理論上推導出各向異性介質的溫度場以及熱導率張量並給予一定的實驗驗證。Abstract : in this paper, the influence of the intrinsic material losses on the resonance and parameters measurement of lossy piezoelectric resonators, based on the impedance ( or admittance ) equation, is analyzed
文摘:本文從考慮損耗時壓電振子的阻抗(或導納)方程出發,詳細分析了材料固有損耗對壓電振子的頻率特性及參數測量的影響。The signal generator of sweep frequency is based on dds device ad9954, the signal measuring circuit is based on gain and phase detector ad8302, the real - time control and deal circuit is based on tms320vc5409, and the periphery interface circuit is based on at89s52. the system can generate sweep frequency signal with the frequency range from 100khz to 150mhz, and with the power range from - 45dbm to + 18dbm. it can measure the gain and phase of the network, display the measure data by liquid crystal displayed and print it by the printer
該測試儀以dds晶元ad9954為核心構成掃頻信號源電路,以增益相位檢測器ad8302為核心構成檢測電路,以dsp晶元tms320vc5409為核心構成控制與運算電路,以及以at89s52為核心構成外圍介面電路。該測試儀能產生頻率范圍達100k ~ 100mhz ,功率范圍為- 45dbm ~ + 18dbm的掃頻信號,能對被測網路的頻率特性進行測量,並留有豐富的外圍介面,可以將測量數據繪圖通過lcd顯示或者由印表機列印輸出。This thesis intends to extend the frequency range of a shaker, minimize the impact of the additional mass and stiffness on the assessment results and make the frequency property of a shaker flat
本文旨在拓寬激振器的使用頻率范圍,減小激振器附加質量和附加剛度對測試結果的影響,並使激振器具有平坦的頻率特性。The digital tester for frequency response characteristic, which is also called frequency - sweeping instrument, plays a very important role in modern electronic measurement
掃頻儀也稱頻率特性測試儀,用於測試網路的幅頻特性和相頻特性,在現代電子測量中佔有重要的位置。Firstly, the circuit design of the instrument are described detailedly, including the circuit of serial communication interface, the circuit of sweep signal generator, the circuit of amplitude measurement, the circuit of phase measurement
首先,詳細探討了了虛擬頻率特性測試儀的控制、串列通信介面、數控掃頻信號源、幅值測量、相位測量等電路的設計。In the design of hardware, frequency sweep signal is based on dds + pll. by the control the singlechip c8051f060, ad9852, the dds chip, can achieve stepped frequency signal. with amplifying and detector circuits, the instrument can achieve the measurement and receiving of amplitude frequency characteristic result. by means of pdiusbd12 finish the usb1. 1 protocol conversion, communicate with usb interface of pc, the instrument give the measurement resul of amplitude - frequency characteristic in lcd of pc
硬體方面,掃頻信號源基於dds + pll的技術,由c8051f060單片機控制dds晶元ad9852實現頻率步進。再加上外圍放大、檢波等電路,測量和接收幅頻特性。並藉助于pdiusbd12完成測量數據usb1 . 1協議轉換,實現與pc機的usb介面通信,將幅頻特性測量結果在pc機的液晶顯示屏上表達出來。His thesis presents many test results of : the superficial roughness of standard slice, aluminum slice, and glass slice by using the outline detector ; the frequency characteristic of experimenting device ; the characteristic of pivotal instruments ; the displacement characteristic of layer - piezoelectricity actuator ; tiny displacement detection. the experimental data are believable and the theoretic analysis is correct
本論文還給出了用輪廓儀測試多種標準片、鋁片、玻璃片的表面粗糙度的測試結果、實驗裝置的頻率特性實驗結果、關鍵器件的特性實驗結果、積層式壓電致動器的位移特性試驗結果及微位移測量試驗結果。The 16 - bit adcs inside the single - chip microcomputer are used in the instrument to measure the output signal of the high frequency tuner, two12 - bit dacs are used to give the control signal needed by programmable gain amplifier. the system has the characteristics such as light volume, light weight, and low cost, which make it more applicable
該標量網路分析儀能方便地測試一個系統的傳輸特性和反射特性,與pc機通過通用串列總線( usb )連接,實現被測網路頻率特性的圖形顯示、保存、列印及參數設置功能。It can be used to measure the amplitude - frequency characteristic and phase - frequency characteristic of the unknown network, and give the real - time the transmission - characteristic measurement of the unknown network
運用掃頻技術的頻率特性測試儀可以對被測網路進行快速的動態測量,得出被測網路傳輸特性的實時測量結果。In cellular envirorunents, because of the influence of several adverse factors, such as muitipath, non - line - of sight propagation, noise, interference and channel frequency characteristics, radio statistics measuremenis like tdoa, toa and aoa related to mobile position, the performance of location algorithms mny be significantly degraded and the position estimation of ms is inevitably biased
在蜂窩網路環境中,由於受多徑、非視距傳播、噪聲、干擾和通道頻率特性等多種不利因素的綜合影響,使tdoa 、 toa 、 aoa等與移動臺位置有關的電波特徵測量值不可避免地出現較大誤差,從而使各種定位演算法的性能顯著下降,造成移動臺位置估計出現較大偏差。Research on frequency response of the transmission line during the measurement of transient pressure
瞬態壓力測量中傳壓管道頻率特性分析It makes the analysis of signal twitter and modulation very easy and the measurement of frequency drift and converting very simple
它使信號的抖動分析、調制分析非常直觀,使頻率漂移測量、頻率轉換特性測量變得十分簡單。分享友人