采樣和保持 的英文怎麼說

中文拼音 [cǎiyànghébǎochí]
采樣和保持 英文
sample and hold
  • 采 : 采名詞（采地） feudal estate
  • 樣 : Ⅰ名詞1. （形狀） appearance; shape 2. （樣品） sample; model; pattern Ⅱ量詞（表示事物的種類） kind; type
  • 和 : 和動詞（在粉狀物中加液體攪拌或揉弄使有黏性） mix （powder） with water, etc. : 和點兒灰泥 prepare some plaster
  • 保 : Ⅰ動詞1 （保衛; 保護） defend; protect 2 （保持） keep; preserve; maintain in good condition 3 （...
  • 持 : 動詞1 （拿著; 握著） hold; grasp 2 （持有; 保持） keep; hold 3 （支持; 保持） support; maintain 4...
  1. It designed signal amplifying circuit, frequency tricking circuit, data sampling and keeping circuit. the choice of 12 bits high accuracy a / d integrated data sampling card made program simply, high flexible and expandable. and to each error which is likely to occur in high voltage capacity type equipment during the monitoring, analysis and judgement are given

    在硬體電路實現上，注意選擇信號傳感器；合理設計了信號放大電路和濾波電路；設計了頻率跟蹤電路，數據采樣/保持電路；結合軟體控制選用了12位高精度的a / d轉換器，使軟體編程簡化且具有較高的靈和性和可擴展性。
  2. The research on autonomous navigation and orbital keeping technology of geosynchronous satellites : selecting position vector in the inertia space and longitude, latitude, radial errors in the hill equation as state variables, the precision of orbit determination caused by track dynamic model error, sampling period, and sensor measurement and install error is analyzed

    同步衛星自主導航與軌道保持技術研究：分別選取慣性空間位置矢量和採用hill方程表示的經、緯、向徑誤差作為狀態量，分析軌道動力學模型誤差、采樣周期以及敏感器測量、安裝等誤差對定軌精度的影響。
  3. The advantage of the random sampling theory relative to the real time sampling theory is that it does have no use for high - powered hardware to support. so we can choose components freely. the difficulty is to ensure the randomicity, to apply the interpolate technology and to ensure the multiple of time extending

    隨機采樣原理相對于實時采樣原理的優點在於不需要高精度的、高性能的硬體支持，這對于器件的選用有很大的餘地，難點在於隨機性的保證和內插技術的應用和時間放大倍數的可確定度。
  4. Under the research of the characteristic of three classical analog filter with simulation software - matlab, this paper devised lowpass circuit that not only can keep the useful signal out of distortion but also benefits the following sample tache and filter tache

    用matlab分析了三種經典模擬濾波器的濾波性能，設計出了能保持有用信號不失真又有利於後面的采樣和數字濾波環節的低通電路。
  5. Hence analysis and design of nonlinear sampled - data systems has been, in recent years, a subject of growing interest in the international community of control research. when a continuous - time plant is controlled using a digitally implemented controller, it is often faced that a continuous - time plant is transformed into its equivalent discrete - time model. a digital controller is usually designed on the base of approximate discrete - time models of the continuous - time nonlinear systems because it is difficult to obtain the closed form of the exact discrete - time model for nonlinear control systems

    利用計算機等一類離散控制裝置來控制連續時間的受控對象時，都會遇到把連續時間系統化為等價的離散時間系統的問題，通過采樣器和保持器來實現離散時間的采樣控制，對于非線性連續受控系統，由於連續系統的時間離散化后一般得不到其等價的精確離散化模型表示的有限形式，實際上由其近似離散化模型代替來設計控制器，而近似會引起信號失真，那麼基於近似離散化模型上設計的采樣控制器，它是否同樣對原連續受控系統有效
  6. The functional descriptions of these error mechanisms which can reveal how errors of various blocks in adc affect the output sample are provided ; analyses show that the first stage of the converter is dominant in a pipeline

    首先，通過研究流水線采樣保持電路、子adc 、子dac和殘差放大級的主要誤差機制，用函數表達式將誤差等效到采樣輸出端，量化各部分誤差對系統性能的影響。
  7. In the paper, the gpr system developed by us employs several optimization techniques to enhance the system performances, including antenna, sampling - hold circuit, orientation wheel, function of system software, multithreading, and signal processing algorithms. as the result the system works more well with these techniques, and its azimuth and distance resolution of 10 cm has been achieved with detection depth of more than 50 cm. the main contents of this dissertation are summarized as following : 1

    本文根據探地雷達系統工作原理，在電子科技大學探地雷達系統樣機研製的基礎上採用了各種有效的優化技術，包括探測前端、采樣保持電路的優化，定位輪、目標定位、多線程技術的應用，數據採集處理和控制軟體功能的拓展、各種有效的信號預處理演算法的應用等，顯著提高了系統的探測性能和增強了探測效果，使得系統方位、距離解析度均達到了10cm ，探測深度大於50cm ，其性能指標達到國外先進水平，為進一步的實用化奠定了重要的基礎。
  8. Abstract : this paper introduces a new power factor meter with sample hod circuit and divider and provides basic measurment circuit. experiment result proves the practicality of the power factor meter

    文摘:本文介紹了利用采樣保持器和除法器實現的功率因數測量儀表，給出了測量電路原理圖，實驗結果表明了該測量儀表的實用性。
  9. In the design of the circuit of hardware, the paper choose the suitable signal sensor, rationally designing the signal enlarging circuit by programme - controlled and signal filter circuit designing the sampling at datas / retaining circuit and hardware communications based on rs - 485 network. combining with software - controlled it select the integrated gathering - card of a / d datas of the high accuracy for the 12th precision, which simplify software programmings and have higher flexibility and can extensible

    在硬體電路的實現上，選擇了合適的信號傳感器：合理設計了信號程式控制放大電路和濾波電路；數據采樣保持電路和現場基於rs - 485網路結構的硬體通信系統；結合軟體控制選用了12位高精度的a d集成數據採集卡，使軟體編程簡化且具有較高的靈活性和可擴展性。
  10. The thesis also introduces the virtual instrument ’ s concept, system architecture, etc. the development of virtual instrument ’ s application software is discussed in detail. it includes virtual instrument software architecture ( visa ), and virtual instrument ’ s software platforms. the thesis discusses the principle and mechanism of work of the simulation of embedded system. by comparing with the principle of traditional logical analyzer, it draw a conclusion that the virtual logical analyzer will work in synchronous way when it is used for both logical state analyzer and logical time analyzer. the thesis

    論文接著探討了嵌入式模擬平臺的原理和工作機制，通過與傳統邏輯分析儀原理的比較，得出了嵌入式模擬平臺下邏輯分析儀無論是做定時分析，還是做狀態分析都工作在同步方式下;並重點剖析了探頭原理，采樣定理和毛刺，數據的建立和保持時間等邏輯分析儀的重要技術指標，得出了虛擬環境對虛擬邏輯分析儀的功能和各項技術指標的影響，還提出了流水線狀態表的思想和實現機制。
  11. The whole system analysis and sub - block design were proceeded to the function requirements. typical sub - blocks were analysed emphatically such as switch capacitor sampling / holding block, brightness control block, oscillator, thermal shut down circuit, ptat and bandgap reference etc. principle and operation of driver circuit are analyzed in the thesis

    在電路設計中，結合開關電容采樣保持電路、 pwm / linear亮度控制模式以及恆流源驅動等理論給出設計依據，並根據功能需求進行了電路的總體結構設計和子電路設計。
  12. Second, a parallel adaptive ray - casting algorithm for graphic rendering of cfi is developed. in the computational model of cfi, the line - of - sight integration is difficult to obtain for 3d complicated flow field, because curvilinear grids, multizone curvilinear grids, and other irregular grids that are commonly used in computational fluid dynamics ( cfd ) present interesting challenges, such as the complex shapes of cell regions defined by grid points ; the wide variation in the sizes of cells in different regions of the grid ; and the intersecting or overlapping nature of multi - grids. the parallel adaptive ray - casting algorithm is extremely efficient to solve these problems

    并行自適應光線投射法繼承了光線投射法適合於任何形式網格的優點；光線與計算網格的交點自適應地反映了原來網格點物理量的分佈，能夠與數值計算的精度保持一致；圖像平面的自適應演算法使我們不必從每一個像素發出射線，既提高了光線投射法的計算效率，同時又保證重采樣后激波這樣的高頻信息不會損失；將并行處理技術引入計算光學流動圖像生成過程，解決了大規模數值模擬結果的處理對計算速度和內存容量的需求。
  13. Through the coding, control and transmission of every vob sequences, the system not only gains the higher compress ratio but also has new functions such as automatically giving alert and fast retrieval by roi etc. every part of the technique implementation is discussed in this thesis, such as moving object detection and segmentation, video roi decomposition and composition, vob sequence coding and decoding, and feature - retaining sampling etc. beyond that, in this paper, a quasi - still - background monitor system and information network is described

    論文詳細論述了構成整個技術的每個部分，包括動目標的檢測與分割，視頻roi分解及合成， vob序列的編解碼，以及保持應用特徵的采樣等幾個方面。此外，在本文中還描述一個基於該技術的準靜態場景監視系統信息網路的設計思想和基本工作原理，對其中的每個部分都做了詳細論述。
  14. For the hardware, the device is an advanced data acquisition and parallel processing system required specifically by real - time signal monitoring in power system. a multi - channel sampling and retaining circuit, which makes it possible to acquire and transform data synchronously, is designed. to make the application of the device more flexible, two communication methods are offered, i. e. rs - 232 communication and ethernet communication

    硬體設計方面，根據電力系統中數據採集和處理的實際特點，設計了信號的多通道采樣保持電路，實現了多路信號的同步采樣和快速轉換;為了提高裝置應用的靈活性，系統在通訊方式上，除了採用常用的rs - 232通訊方式，還提供了以太網通訊方式。
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