電源外特性 的英文怎麼說
中文拼音 [diànyuánwàitèxìng]
電源外特性
英文
external characteristic of power- 電 : Ⅰ名詞1 (有電荷存在和電荷變化的現象) electricity 2 (電報) telegram; cable Ⅱ動詞1 (觸電) give...
- 源 : 名詞1. (水流起頭的地方) source (of a river); fountainhead 2. (來源) source; cause 3. (姓氏) a surname
- 外 : Ⅰ名詞1 (外面) outside; external side 2 (外國) foreign country 3 (以外) besides; beyond; in ...
- 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 ...
- 電源 : source; current source; electric source; power pack; power supply; power source; source of power ...
- 特性 : characteristic(s); character; performance; features; properties; behaviour; response; character...
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The bandgap is found to broaden with increasing dopant concentration, and it is found that doping with al has the effect of shifting the optical absorption to the shorter wavelength, with both cases being attributed to the burstein - moss shift. we report a study on the fabrication and characterization of ultraviolet photodetectors based on zno : al films. using sol - gel technique, highly c - axis oriented zno films with 5 mol. %
為了研究zno : al薄膜在紫外光探測方面的性能,我們採用溶膠-凝膠旋塗法在si襯底上生長出具有高度c軸取向的zno : al薄膜,摻al濃度為5mol . % ,並以此作為有源區成功制備出了au / zno : al / au光電導型紫外探測器的原型器件,並對其i - v特性、紫外光響應和光致發光等方面的性能進行了研究。In this paper, it has been studied by the slope - controlled scr rectifier that external characteristic of welder relate to arc digging action and the strong arc force of arc welding power source in manual arc welding formed
利用一種特製的變結構可控硅整流焊機,研究不同焊機外特性對電弧穿透力的影響;探討了手工電弧焊強電弧力形成機理;並且指出正確設計電源外特性,是獲得較強電弧穿透力的途徑。The type of wireless transmission detaches the part of data acquisition from the part of data processing in order to improve the monitor system upon the practicability and security for the person. the universal serial bus is a kind of newer bus interface ' s criterion than other buses in the computer ' s technology. in the design, the universal serial bus is used as the interface between the system and the computer that makes the design possess a lot of features, such as easy operation, plus and play, none of exter nal power, and need not to install
無線數據傳輸方式將數據採集部分與處理部分分開,提高了監護系統的實用性和對人體的安全性;通用串列總線是一種較新穎的計算機總線介面規范,本系統使用通用串列總線作為系統與計算機的介面方式,使得本系統具有操作簡便、體積小巧、即插即用、支持熱插拔、無須外接電源、使用無須安裝等特點。Each technology offers inherent performance characteristics that can be enhanced with compensation networks or additional active circuitry
各種技術以增強的補償網路或外加的有源電路提供固有的性能特性。With the large - scale exploitation of hydroelectric resource in the west, the effects of severely cold, high humility and high altitude on the external insulation performance of overhead transmission line insulator will more and more server
隨著水電資源的大規模開發,西部高寒、高濕及高海拔對輸電線路外絕緣電氣特性的影響將更加突出。Porous silicon ( ps ) is a new type silicon - based material developed in recent years, which has different properties compared with the crystalline materials. porous silicon can luminescence efficiently across the whole range from the near infrared, through the visible region, to the near uv region. this characteristic makes it possible to fabricate light - emitting devices and solve the key problem of the optoelectronic integrated circuit ( qeic ), opening up the bright future for the vlic
多孔硅( ps )是近年來發展起來的一種新型硅基材料,具有與單晶硅材料大不相同的特性,例如,多孔硅可在近紅外和可見,甚至近紫外區輻射強烈的熒光,使得它可用來製造發光器件,並可望在解決光電子集成電子學的關鍵問題,為製造帶有光源的大規模集成電路等方面開辟新的途徑。The overhaul of power units are arranged in terms of peaking capacity balance and the power loads are dispatched based on the principle of equal incremental coal consumption rate in the new method, which is anticipated to solve the economic operation of the power system
實際上,抽水蓄能電站的容量效益與電網的負荷水平、負荷曲線形狀和常規水電的比重有關,而節煤效益除與負荷水平、負荷曲線形狀有關外,還與電網的電源結構、火電機組的動力特性有關。Constant output characteristic is performed by voltage feedback, and the dynamic characteristic control of power supply is realized by modifying the reference voltage in di / dt feedback loop
利用電壓負反饋實現所要求的平外特性。對電源動特性的控制通過改變反饋電路中的給定焊接電壓實現。Many experts and researchers have made great efforts in a long time. this paper is from the study of theory, analysis the particularity of electrical tractor loads
本文從理論探討的角度出發,深入了解了國內外對電牽引系統多諧波源隨機諧波電流疊加問題的動態,分析了電牽引負荷諧波的分佈特性。The piezoelectric - pump driven by piezoelectric - stack is a newly development trend, it can accommodate frequency and pressure in a large scale and control the output flux in precision. this pump will widely apply to transfusion, feed oil and clean the equipment in industrial automation, and scientific research, lab, chemical preparation and cooling of cpu etc. driven theory of piezoelectric - stack because the piezoelectric - stack is the core part of the pump that we designed, we should pay more attention to driven principle of the piezo - stack so that we can using it correctly. this paper introduces piezoelectric material and interrelated parameter, output characteristic and driven principle and driving type of piezoelectric - stack
壓電疊堆泵是一種以壓電疊堆作為驅動元件的微型泵,它是隨著mems的發展而發展起來的。本文提出利用壓電疊堆與柔性鉸鏈放大機構配合來驅動微型泵的橫隔膜,以達到泵送流體的目的。本文在查閱國內外大量文獻的基礎上,總結了國內外壓電疊堆泵的研究現狀,分析了壓電疊堆的動靜態特性,提出一種以壓電疊堆作為驅動源的壓電流體泵的構想。According to negative temperature coefficient of vbe and positive temperature coefficient of vt, a framework of band - gap voltage reference is investigated. the reference offer a source of pir, distributed three voltage, one as upper - threshold voltage of dual - threshold comparator, the other as lower - threshold voltage of comparator, the other as direct current voltage for second band - pass filter amplifier
同時利用pnp晶體管發射結電壓的負溫度特性和發射結差值電壓的正溫度特性設計了一個帶隙基準電壓源。此帶隙基準電壓源本身作為熱釋電紅外傳感器的電源電壓,同時分壓提供雙限電壓比較器的上限電平和下限電平以及第二級帶通濾波放大器的直流電平。Study on the control circuits of external characteristic and dynamic characteristic of igbt manual metal arc welding inverter
逆變式手弧焊電源外特性與動特性控制電路研究The co2 welding process needs the special external characteristic and dynamic characteristic of power source for there are alternately arcing time and short circuiting time at the period of short - circuiting co2 welding
在採用短路過渡方式的co2焊過程中,短路和燃弧過程交替發生,因此它對電源的外特性和動特性有特殊的要求。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。The twelve kinds of modes and equivalent circuits of this inverter with high frequency link within one high frequency switching period are carefully analyzed ; by using the state - space averaging approach, the inverter ’ s averaging model is presented, and the design criterion of key circuit parameters and the output characteristic curve are given ; the analyses of the system stabilization and the mathematic analyzes of the principle of high - frequency - link of this inverter have also be done. prototypes for 1kva 270v 10 % dc / 115v400hzac uni - polarity phase shifting controlled bi - directional voltage mode inverter with high frequency link is designed
以全橋橋式拓撲為例,論述了雙向電壓源型高頻環節逆變器單極性移相控制的原理、逆變器在一個高頻開關周期內的十二個工作模式及其等效電路;採用狀態空間平均法建立了逆變器平均模型,獲得了這類逆變器的關鍵電路參數的設計準則和外特性曲線;分析了系統穩定性,並對逆變器高頻環節原理進行了數學分析。The twelve kinds of modes and equivalent circuits of voltage mode ac - ac mode ac / ac converters with high frequency link within one high frequency switching period are carefully analyses. by using the state - space averaging approach, the converter ' s averaging model is presented, and the design criterion of key circuit parameters and the output characteristic curve are given
以全橋橋式拓撲為例,論述了單極性移相控制的原理、單極性移相控制電壓源交?交型高頻環節ac ac變換器在一個高頻開關周期內的十二個工作模式及其等效電路。採用狀態空間平均法建立了變換器平均模型,獲得了關鍵電路參數的設計準則和變換器的外特性曲線。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。Taking single four - quadrant power switch mode circuit as an example, the operational mode, steady principles, transient voltage feedback control strategy, the auxiliary switching power supply and parallel technology of this kind of converters are investigated. the output characteristic curve and the design for the key circuit parameters are given
以單四象限功率開關式電路拓撲為例,分析研究了這類變換器工作模式、穩態原理與電壓瞬時值反饋控制策略,給出了變換器的外特性曲線、關鍵電路參數、機內輔助開關電源的設計,對電流源高頻交流環節ac ac變換器並聯擴容技術進行了研究。Taking single four - quadrant power switch mode circuit as an example, the operational mode, steady principles, transient voltage feedback control strategy of current mode ac - ac mode ac / ac converters with high frequency link are investigated. the output characteristic curve and the design for the key circuit parameters are given
以單四象限功率開關式拓撲為例,分析研究了電流源交?交型高頻環節ac ac變換器的工作模式、穩態原理與電壓瞬時值反饋控制策略,給出了變換器的關鍵電路參數的設計準則和變換器的外特性曲線。Abstract : the multifunctional inverter power sourcethe handy inverter welding, plating & charging manchine, developed with advanced inverter and micro - electronics control techniques, adopts “ half - bridge power expansion supply midpoint voltage autocontrol setting ”, and technically and effectively having solved inverter subvision of inverter power expansion circuit for leaning magnetism, reliability of high - power inverter setting, achives combination of constantcurrent and constantvoltage export, and realizes low - voltage dc and high - voltage ac double power supply
文摘:運用先進的高頻逆變技術和微電子控制技術設計研製的逆變式多功能電源便攜式逆變焊鍍充電多用機,採用「半橋式功放級供電中點電壓自動控制調節裝置」 ,在技術上解決了逆變功放電路因偏磁而造成的逆變顛覆,有效地解決了大功率逆變器的可靠性問題;進行多種外特性的綜合設定,實現了恆流與恆壓輸出的合一;與傳統焊機相比,實現了開環和閉環狀態下都互不影響的低壓直流電瓶和高壓交流雙供電分享友人