dc filter 中文意思是什麼
dc filter
解釋
直流濾波器-
The dc power supply consists of passive filter circuit. the capacity of passive filter is up to 264mf
設計的直流電源用最簡單的無源濾波電路，濾波電容的容量為264mf 。 -
In the passive circuit part, according to the theories of microstrip line and coupled microstripwe, the characteristic of microstrip and coupled microstrip was analyzed, the x band filter and dc block circuit of amplifier have been designed by hp - ads software
為毫米波設備提供本振源。在無源電路部分，我們首先對微帶線、耦合線等基本理論作了簡單的介紹。 -
In the simulation work, one 1. 5kw and one 18kw induction motors ? control system were simulated and two simplified control scheme were proposed. when developing the program in tms320f240 dsp, this paper solved two practical problems : the finite - length effect and dc bias effect. finally, sensorless control system based on adaptive filter theory are tested on the platform of 1. 5kw induction motor, the results show that the scheme ? performance is good
在模擬過程中，針對1 . 5kw和18kw異步電機進行了模擬，並在此基礎上提出兩種簡化控制方式；在tms320f240的具體編程過程中，分別對自適應濾波器的有限字長效應、直流偏置效應等非理想因素進行了修正和補償；最後，在1 . 5kw微型異步電機上進行了轉矩閉環無速度傳感器實驗，實驗結果表明了演算法完全可以達到預期的目標。 -
Established in 1980, we manufacturer electronic products such as universal remote control, 100baset lan filter, dc dc converter. we spcially professional in ic design for universal remote control for tv vcr cd ld vcd dvd amplifier satellite receiver cable tv converter and air - conditioner
我們特別專業于萬能遙控器的ic設計，供各種品牌的電視機錄放影機cd ld vcd dvd擴大器衛星接收機選臺器及空調機使用。 -
Abstract : this paper discussed process, characteristics of the equipment and the operating effects of large sized pulse jet bag filter with long bag and low pressure in the cleaning of 100t dc electric furnace
文摘:闡述了長袋低壓大型脈沖袋式除塵器在100t直流電弧爐的除塵系統中的流程、設備特點及運行效果。 -
This inverter consists of a two - quadrant dc / dc converter and an inverted bridge in series, which has a lot of merits such as : the amount of the power switch working in high frequency situation is reduced ; it has not the risk of short - circuit ; the volume and the weight of the filter is minished
本文研究了一種基於dc dc變換器拓撲逆變器，該逆變器是由一兩象限的dc 0c變換器和一逆變橋級聯而成，具有高頻工作的功率管少、無直通、濾波器體積重量小、控制簡單等優點。 -
The amplitude discrimination circuit, the filter circuit and the amplifying circuit are designed to transform ac analog signal that the eddy current sensor output to dc analog signal, thus, the dc analog signal can be received by ad converter
傳感器輸出的測量信號是中頻的交流模擬信號，在下位機系統設計了鑒幅、濾波、放大電路將測量信號轉化為模數轉換器可以接受的直流信號。 -
In the output stage of the converter, a small filter is treated as an integral part of the dc - to - dc converter
在變流器的輸出級，一個小的濾波器作為直流-直流變流器整體的一部分。 -
According to the space vector modulation method of the equivalent structure of the ac - dc - ac transformation, the transformation relations of the matrix converter are deeply investigated. the ac - ac direct conversion control and the double - space - vector pwm scheme of the matrix converter are deduced, the four - step current commutation strategy of matrix converter is expatiated, the design method of input filter and over voltage protection circuit is analyzed, and the modeling and simulation of a three - phase matrix converter are implemented
從等效交-直-交變換的空間矢量調制方法出發，深入分析了矩陣式變頻器的變換關系，導出了交-交直接變換控制規律和雙空間矢量脈寬調制技術，闡述了矩陣式變頻器的換流控制策略，分析了輸入濾波器和過電壓保護電路的設計方法，實現了矩陣式變頻器的建模和運行分析。 -
This paper analyzed the modulation and filter technique on joint power spectrum ( jps ), which reduced the intensity and width of the strong dc component existing in the classical joint transform correlator, improved the recognition ability greatly
針對聯合變換相關器，分析了對聯合功率譜的調制和濾波技術，縮小了峰值半寬度、削弱了零級自相關的能量，改善了經典聯合變換相關器識別性能。 -
The switches of the two - level leg suffer the input voltage and can realize zero - current - switching ( zcs ) in a wide load range, so the igbt can be adopted. the voltage across the output filter is a tl waveforms, which reduces the output filter. the input current of hfb tl converter is nearly a dc current, which reduces the input filter
復合式全橋三電平變換器不僅可以將開關管電壓應力減小一半，大大改善輸出濾波器工作條件的優勢，還可實現所有開關管的全負載范圍軟開關，本文詳細分析該變換器的工作原理、參數設計、控制方案，並進行實驗驗證。 -
Firstly, the input three - phase ac is converted into dc after it passes rectifier and filter circuit. secondly, the dc is changed into three - phase ac which frequency and value can be continuously adjusted. lastly, the output three - phase ac is supplied to load
該實驗單元首先把輸入的三相交流電經整流濾波后變成直流電，然後把直流電逆變成頻率和電壓大小可調的三相交流電，供給三相對稱負載。 -
The power circuit of the system adopts the voltage frequency conversion structure of ac - dc - ac, and is composed of the commutation circuit, filter circuit and intelligence power module ( pm15rsh120 ). control circuit takes the dsp chip tms320lf2407 as core, including the pwm signal occurrence circuit, detect circuit of stator current and direct current voltage of generatrix, drive circuit of intelligence power module, detect circuit of speed, protect circuit of system etc. all of this builds the full digital vector control system of asynchronous motor
該系統的功率電路採用電壓型的交-直-交變壓變頻結構，由整流電路、濾波電路及智能功率模塊ipm （ pm15rsh120 ）逆變電路構成;控制電路以dsp晶元tms320lf2407為核心，加上pwm信號發生電路、定子電流檢測電路、直流母線電壓檢測電路、智能功率模塊驅動電路、速度檢測電路、系統保護電路等，構成了功能齊全的異步電機全數字化矢量控制系統。 -
For ac discrete digital signal, the zero - calculating method is applied to calculate the true zero in the periodic signal. for the measurement of ac and dc voltage spectrum, the faster fourier transform ( fft ) is used. to measure dc voltage ripple spectrum and frequency modulation of ac voltage, the digital filter is used
其中對于交變的離散數字量，採用零點撿出技術計算周波信號的真實過零點；對于交直流電壓頻譜，採用快速傅立葉變換進行頻譜分析；對于直流電壓脈動和頻率調制，採用數字濾波器進行濾波后再做分析處理。 -
Calculation and simulation of the filter capacitor at the dc side of the vsr
直流側濾波電容的計算及實驗分析 -
Through the design the dc feed network, input matching network for the ne900175 gaas fet and analysis the stabilization, power gain, bandwidth of the power amplifier we get the power amplifier is stability, the power gain is 11. 967db and the bandwidth is 300mhz. microstrip antenna has a narrow bandwidth, in this design antenna ' s bandwidth is 100mhz. antenna is the not only the load of the power amplifier, but also as the filter connecting to the output of the power amplifier
E類功放的pae相對a類、 b類、 ab類的功率放大器類型而言比較高，在50 ? 70 。分析了e類功放的工作過程后，以ne900175的gaas場效應管作為e類功放電路的開關，進行了外圍電路的設計，包括直流偏置電路、輸入匹配網路的設計，功放的穩定性、帶寬、增益的分析。該功放增益最大達到11 . 4db ，帶寬為320mhz 。 -
According to the practice on gezhouba to shanghai hvdc transmission project and in consideration of condition on three gorges hvdc project, some suggestions on protection of overvoltage and insulation coordination for outer insulation, against pollution - wet, dc neutral bus over - voltage and dc & ac filter are technically presented. it may be a reference in design of three gorges converter station
根據葛南直流工程的經驗並結合三峽工程的情況，在換流站的外絕緣、直流耐污濕技術、直流中性母線過電壓防護、交直流濾波器的過電壓防護等方面提出了過電壓和絕緣配合的技術要求，供設計參考。 -
Sometimes it is difficult to predict and calculate the periodic orbit, so the chaotic control technology based on washout filter is used to control chaotic phenomena of dc / dc converter
針對上述不足，本文採用了washout濾波器來控制dc / dc變換器中的混沌現象，模擬結果證明了該方法的有效性。 -
It could be a battery source ; however, in most case, the input is a diode rectified ac line voltage with a large filter capacitance, to provide a low internal impedance and low - ripple dc voltage source
該直流電壓源可能是一個電池，然而在大多數的情形是一個經二極體整流的交流電壓再加上一個大的濾波電容，用以提供一個低內阻、低脈動的直流電壓。 -
In this paper they study a position - detecting system based on microprocessor and psd ( position sensitive detector ). the method is as follows : when the ac - signal from psd which is illuminated by modulated light source passes through an active band - pass analog filter, it filters the ac signal which represents the object light source. then the dc - converter circuit transforms it into dc - signal which is used to calculate the position
這一系統採用的方法是通過對位置敏感探測器psd受到調制目標光源照射后輸出的模擬交流信號進行有源帶通濾波，提取出代表目標光源的調制頻率成份，再將該信號轉變為用來參與位置解算的直流信號，然後選用單片機組成硬體電路，對直流信號進行採集處理並與計算機建立通信，把數據送入計算機進行位置解算，分析判別目標光源和psd器件的相對位置。
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