synchronous sampling 中文意思是什麼
synchronous sampling
解釋
同步采樣- synchronous : adj. 同時的，同期的；【物理學】同步的。adv. -ly
- sampling : n. 1. 取樣（品），取標（本）〈指行動或程序〉。2. 樣品，標本。3. 剽竊拼湊歌曲。
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In this paper, the operation theory is ntroduced. we research the quasi. synchronous alternative sampling echnology in detail to improve the precision of the instrument and discuss some problem about the plication of this method. we introduce the develop of hardware and software in the whole instrument. at last, we sive out the result of experiment and the analyses of error
文中論述了該電參數測量儀的工作原理，著重研究了提高測量精度的準同步采樣演算法，並討論了該演算法在單片機中應用的幾個實際問題。在此基礎上，詳細介紹了整個儀器的軟硬體開發過程。最後對儀器進行了實驗和誤差分析，給出了實驗結果和誤差分析結果。 -
The safety of transmission line plays a important role in power system safety it is not only the requirement of ensure supply power reliability, but also the necessary precondition of enhance power system stabilization, to remove faulty line quickly and accurately, also keep non - faulty line continuous work when some transmission line faults current differential protection is a kind of simple, reliable and good - selective protection manner to any variety of transmission lines, power system development needs current differential protection apply to transmission lines, moreover the advancement of electric and communication technology enable current differential protection apply to transmission lines firstly, the paper discusses, analyses the research and application transmission line protection in detail, compare the principle and realistic presupposition of general line pilot protections secondly, because conventional current vector differential protection are influenced easily by load current and transitional resistance, in order to at the same time quicken protection act, the principle and criterion include work characteristic of differential protect based on fault component sampled values are studied, results shows that differential protect based on fault component sampled values excels general vector current differential protection in reliability, sensitivity and anti - saturation of current transformer in addition, synchronous current sampling methods at all terminals of line is analyzed and estimated lastly, the principle and criterion. also device design about current sampling values differential protection based on optical fiber communication, which apply to short transmission lines are concretely investigated,
基於基爾霍夫定律的電流差動保護無論對於何種形式的輸電線路都是一種簡單、可靠、選擇性強的保護形式，電力系統的發展使得電流差動保護應用於線路保護成為需要，而電子、通信技術的發展使得電流差動保護應用於輸電線路成為可能。首先，本文對目前線路保護的研究和實際應用情況進行了討論和分析，比較了常用線路縱聯保護的實現原理和實現條件及優缺點。其次，針對常規相量電流差動保護易受正常負荷電流和故障過渡電阻影響的缺點，同時為加快差動保護的動作速度，對基於故障分量瞬時采樣值電流差動保護的原理、判據、動作特性等作了討論和分析，結果表明基於故障分量瞬時采樣值電流差動保護在可靠性、靈敏度、抗電流互感器飽和方面明顯優于常規相量電流差動保護，對電流差動保護各端的同步采樣方法和數據通信也進行了分析和評價。 -
Because massive harmonic interference in the electrical network, it causes signal - sampling to include the very big harmonic in the measurement system, for eliminating measurement result influence by harmonic, the paper has an in - depth study of fourier transformation harmonics analysis measurement principle, analysis the forming reasons of frequency spectrum leakage and railing effect during measurement, achieves phase locked loop and frequency multiplier technique to realize integer - period synchronous sampling and eliminate impact of frequency spectrum leakage and railing effect in the result of measurement, and investigates in depth theory on phase locked loop and frequency multiplier technique, gives the method of realizing phase locked loop and frequency multiplier technique
由於電網中存在大量的諧波干擾，導致測量系統中取樣信號也含有很大的諧波，為了消除諧波對測量結果的影響，論文深入研究了傅立葉變換諧波分析法的測量原理，分析了測量中頻譜泄漏和柵欄效應形成的原因，提出了採用鎖相環倍頻技術實現信號的整周期同步采樣，消除頻譜泄漏和柵欄效應對測量結果的影響，並對鎖相環倍頻技術的理論進行了深入研究，給出鎖相環倍頻技術的實現方法。 -
Error analysis for synchronous sampling of periodic signal
周期信號同步采樣誤差分析 -
Study on synchronous sampling in technology of rf. admittance level measurement
射頻導納物位測量中的同步采樣技術研究 -
Simulations with respect to two models, prove that the method can track the frequency accurately and instantly, and have the preferable effectiveness on the abruptly fluctuating - frequency power signals, at the same time, this method overcomes the constraint of synchronous sampling and has the better astringency with different initial frequency
針對兩種模型進行模擬，表明該方法能夠較為精確與快速地跟蹤電網頻率，尤其針對突變頻率的信號，具有較好的跟蹤效果；同時演算法克服了同步采樣條件的限制，通過迭代，在不同初始頻率下均具有較好的收斂性。 -
Abstract : the paper proposes a mathematical model of a / d converter with quantizing error, nonlinearity and differential nonlinearity errors for computer simulation, and based on the model, the errors caused by voltage change, current change and phase change in the power measurement are analyzed by computer simulation for both the asynchronous and quasi - synchronous sampling algorithms
文摘:本文提出了具有量化誤差、非線性誤差和微分非線性誤差的a / d轉換器的數學模型，在該數學模型的基礎上，模擬分析了非同步采樣法、準同步采樣遞推演算法各種情況下的誤差，包括功率測量中電壓線性、電流線性、相位變化誤差及電壓測量的誤差。 -
The meter adopts digital synchronous sampling and micro technology to accurately measure true rms of transformer ' s primary voltage, current, power, power factor, true rms ( ac ) or average ( dc ) of secondary voltage and current, true rms of secondary voltage ripple
該系列儀器採用數字同步采樣及微機技術，能準確測量變壓器的初級電壓、電流、功率、功率因數的真有效值，次級電壓、電流的真有效值（交流）或平均值（直流） ，次級電壓紋波的真有效值。 -
So to develop a new type of transformer calibrator which has the high precision and the high degree of automation is significative. for the outdated transformer calibrator is widely used, this paper analyzed the theory of previous calibrators and proposed an idea of designing a new type of intelligent calibrator, based on the theory of measure the difference, adopt the project of dsp and mcu structure, also use high speed a / d electric chip. after the design of hardware circuit diagram, adopt the theory of fft and quasi - synchronous sampling method to reach the demand of precision. this paper discuss the intelligent development of transformer calibrator, achieve some success in the study
本文針對國內市場目前普遍使用的老式互感器校驗儀的現狀，提出了智能型互感器校驗的研製思想，並詳細講述了其理論依據和實現過程，提出了切實可行的方案：基於測差測量原理，進行基於dsp和mcu雙cpu架構、並採用高速a / d的硬體電路設計，並在此基礎上採用快速傅立葉變換和準同步采樣演算法，並完成相關的軟體演算法框圖設計，對互感器校驗儀的智能化發展進行了有益的探索，取得了具有實用意義的成果。 -
The quantizing error, linear error and differential linear error of an a / d converter were deduced, after that the error model of synchronous sampling, asynchronous sampling and quasi - synchronous sampling algorithms used in power measurement were build in condition that a / d was not perfect
推導了a / d量化誤差、非線性及微分非線性誤差的數學模型。然後，建立了采樣功率測量同步采樣演算法、非同步采樣演算法和準同步采樣演算法在非理想情況下的計算機模擬模型。 -
Raw material review, synchronous sampling, periodic submission of samples to authorites sampling inspection, advanced chemical and particle size testing apparatuses, timely follow - up and feedback of product information constitute our complete quality supervision system that guarantees the quality of our products
原材料審核，生產同步抽樣，階段性產品權威機構送樣抽檢，先進的粒度檢測設備，產品使用信息時跟蹤和反饋，構成了完整的質量監督體系，保證了產品的品質。 -
Study on synchronous sampling methods of ac power parameters
交流電參數的同步采樣方法研究 -
Application of gps - based synchronous sampling in power system
同步采樣技術在電子系統中的應用 -
Frequency - domain error analysis of synchronous sampling realized by software
軟體實現同步采樣的頻域誤差分析 -
Study on sampling method with multi - functional and breath - synchronous sampling instrument
多功能呼吸同步采樣儀采樣方法的研究 -
Synchronous sampling software - timing compensation algorithm in ac parameters measurement
交流電參數測量中同步采樣的軟體定時補償演算法 -
Abstract : in this paper, the double - speed synchronous sampling method is introduce d to the power system harmonic measurement, and the corresponding algorithm mode l of dft is deduced
文摘:將雙速率同步采樣法用於電力系統諧波測量，導出相應的dft計算模型。 -
It uses quasi - synchronous sampling method to measure electrical ac parameters and analyze harmonic. it can measure parameters of several ac circuits, display and carry on remote communication
採用準同步采樣演算法進行電參量測量及諧波分析，可實現對多個迴路進行測量、顯示、遠傳。 -
The paper discusses the advent and development of digital sampling theory, inc - luding the synchronous sampling method ， asynchronous sampling method and quasi - synchronous sampling method. of all the methods, hardware synthronous sampling method cost less and its software is small
本文簡述了數字采樣原理的產生和發展，對數字采樣法中的三種主要方法即同步采樣法、非同步采樣法、準同步采樣法做了基本介紹，並分別對其特點進行了比較。 -
The method of quasi - synchronous sampling is used to measuring electrical parameters and analyzing harmonic. it can also measure parameters of several ac circuits, display and carry out remote communication
採用準同步采樣演算法進行電參量測量及諧波分析，可實現對多個迴路進行測量、顯示、遠傳。
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