analog addition 中文意思是什麼
analog addition
解釋
模擬加法-
And the interfaces have analog input, analog output and digital input / output. we have used differently cards, such as pc - 6330d a / d card, pcl - 728 d / a card based isa bus, ipc - 5375 i / o card and so on. in addition, we select micro - stir switches and pressure sensors as sensor elements to inspect the system and choose relays and induction valves to control the bicycle pump and the motor
總線採用isa內部總線；介面主要有模擬量輸入介面、模擬量輸出介面、開關量輸入輸出介面等，課題分別選用pc - 6330d型a d板卡、基於isa總線的型號為pcl - 728的d a板卡、型號為ipc - 5375的i o板卡；另外，課題選用了微動式行程開關、壓力變送器作為傳感元件檢測系統，選用繼電器、電磁控制換向閥實現對氣缸、電機的控制；採用vc + + 6 . 0編制控制軟體，實現了纖維鋪放技術的計算機控制。 -
In addition, a low - pass filter can be employed prior to the digital - to - analog ( d / a ) stage to smooth the stairstep effect resulting from the combination of a low sampling rate and quantization
另外，在數模轉換（ d / a ）級前用低通濾波器可以平滑因低的抽樣頻率和量化造成的階梯效應。 -
In this paper, a high integrated and intelligent digital dsp - spm system is developed based on the nspm6800 spm manufactured by the beijing zhongke mechanical & electrical equipment co. at present, the pc of spm system is burdened with not only sending and receiving data, but also disposing of image, which hinders the enhancement of speed of the system. in addition, as the function of spm is expanding, including tappingmode afm, efm, mfm, scm, etc, one hand, it amplifies the range of the application of spm, on the other hand it also means that the task of autocontrol and data transfer heavier. the advantages offered by the dsp compared to analog systems include considerable flexibility in the choice of the signal processing algorithm and greater ease in managing control parameters by the host computer, which are very important for the improvement of spm
本課題以北京市中科機電設備公司的nspm - 6800型掃描探針顯微鏡為基礎，重新設計了以dsp為控制核心的控制系統，主要解決原系統存在的以下問題： （ 1 ） pc機既要實時控制數據的採集與發送，又要進行圖像的后處理，整個系統的實時性難以達到要求； （ 2 ）隨著spm功能的擴展，一方面包括輕敲式原子力顯微鏡、電場力、磁場力、掃描容場顯微鏡等技術在內的spm技術擴展了儀器的測試范圍和功能，另一方面也意味著自動控制量的增加和數據處理量的增加； （ 3 ） 16位a d 、 d a都採用的是購買的板卡，也通過isa槽插在pc機內，成本高，不利於擴展； （ 4 ）另外，數字板通過isa槽插在pc機內，易受于擾，而且給安裝帶來不便。 -
The bottleneck of hybrid filter banks adc system is that it cannot sample directly higher radio frequency signal because of lower analog input bandwidth of its adc. in order to remove it, a kind of downsampler model based on nyquist and bandpass sampling theorem is presented, analyzed and proved in time and frequency domain, in addition a downsampler is designed according to the model. on the basis of hybrid filter banks adc system, a class of high speed hybrid filter banks adc system is proposed
針對混合濾波器組adc系統因其adc模擬輸入帶寬低而不能對頻率較高的射頻模擬信號進行模/數轉換的瓶頸，作者提出了一種基於nyquist采樣定理和帶通采樣定理的抽取器數學模型，對該數學模型進行了時域、頻域的分析證明后，設計了一種基於該數學模型的sha抽取器，進而在混合濾波器組adc系統的基礎上，提出了高速混合濾波器組adc系統。 -
Moreover, sampling at high frequency eliminates the need for abrupt cutoffs in the analog anti - aliasing filters. a technique of noise shaping is used in - converters in addition to oversampling to achieve a high - resolution
由於在- a d轉換器中使用噪聲整形技術和過采樣技術，可以用一個簡單的模擬電路加上復雜的數字電路使整個a d達到一個很高的轉換精度。 -
In addition, the analog quantity and switch quantity control of the former system is replaced by the digital quantity control, which can improve precision of production and reliability of the system
另外，系統採用基於sci串列通信總線的數字控制，代替原系統中的模擬量和開關量控制，能夠有效提高系統的生產精度，改善系統的可靠性。 -
In addition, there is 8 on - off signal data input ( di ) passways ( 24 vdcs light separate ) ; 8 on - off signal isolated data output ( do ) passways ( contact without power, 1a / 220v ) ; 4 analog signal data output passways ( 4 ~ 20ma ), every of them can be set as a certain analog signal ' s close ring control output passway
另外，還有8路開關量輸入（ di ）通道（ 24vdc光隔） ； 8路隔離開關量輸出（ do ）通道（無源觸點， 1a 220v ） ； 4路模擬量輸出（ 4 20ma ）通道，每一路均可設定為某一路模擬量輸入的閉環控制輸出。 -
In addition to the capability of simultaneous transmission of six and two channels of two - way tv signals by the existing international and national satellite earth stations, nine more channels have been added for international satellite transmission to provide more than 14 channels of simultaneous analog and digital two - way tv information delivery to 12 home and overseas satellites and send video signals all over the world
現有的國際、國內衛星地球站除可同時提供６路和２路雙向電視傳送能力外，還新增了９路國際衛星電視的上星傳輸能力，可同時向國內外１ ２顆衛星提供１ ４路以上的模擬和數字雙向電視信息傳送，將圖像信號送至世界各地。 -
In addition, the development of rolling analog table for performance test of the tank model is expatiated. according to the lagrange dynamics equation of motion, a mathematical model of the ship - controlled passive anti - rolling tank system is developed
論文介紹了減搖水艙的分類和特點，總結了減搖水艙國內外發展和研究現狀，及用於水艙模型性能試驗搖擺臺的發展及模擬方法。 -
In this solution, the embedded soft cpu ip core is used as the kernel digital module with its periphery controllers based on residual les. in addition, analog channel circuit is added to form an integrated dso system. this dissertation focuses on framework construction, gui design, memory management, message fifo management, other hardware drivers and describes design and implementation of software simulation system written in advanced languages
在這種方案中，使用了在fpga中嵌入cpu軟核作為控制核心，並用fpga晶元中剩餘的其他可編程邏輯資源構成該嵌入式系統的外圍器件，形成數字示波表的數字核心模塊，並配以模擬通道部分電路，組成了一個完整的數字示波表。
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