線選開關 的英文怎麼說
中文拼音 [xiànxuǎnkāiguān]
線選開關
英文
linear selection switch-
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。The 1mhz fixed frequency switching allows for tiny external components and the regulation scheme is optimized to ensure low emi and low input ripple. an external resistor sets the full - scale led current, while two digital inputs control on / off and select amongst three levels of brightness. the circuit operates in 1x mode until just above dropout
工作在1mhz固定頻率，採用線性調制模式使輸入紋波大大減小;利用一個外部電阻可以設置滿量程led電流;外接兩個數字信號控制晶元開關並選擇led三級亮度中的一級;具有過溫、過壓/欠壓等保護功能，工作溫度范圍為- 40 + 85 。It also supports the airship security management, by switching on request to a manually radio control
它還支持飛艇的安全方式操作，通過一個開關可以選用手動無線電操作。Antenna selector switches
天線選擇器開關Series full - auto pipe expander with drawing device and program interface is used with extruding machine. it is also used solitarily, while expanding pipes, the machine adopts translation, the action is steady and corret, it does not damage pipe materical, the machine adoptes double - infrared heating oven type, each oven is equipped with heating cire, the shaping method adopts expanding - end shaping, the size of pipe mouth is correct. on its panel, there is a transfer swith of expanding solvent type pipe socket ( straigh port ) and expanding sealloop type pipe socket ( rport ). the choice of expanding pipe type is very convenient, the technologocal adaptability is strong, its main electric control elements are all imported. the syetem charecteristics are steady and reliable
配有與主機配套的接料牽引裝置和相應的程序介面，既能與擠管主機聯線使用，又可以作單機使用；擴管時管材的移動均採用平移方式，動作平穩準確而且不易損傷管材；這種機型採用紅外線加熱方式且為雙加熱爐型，每個加熱爐都配有中心加熱爐芯；成型方式均採用擴管頭定型方式，管口成型尺寸準確；該機型在控制面板上設有擴溶劑型承介面（直口）和擴彈性密封圈型承介面（ r口）的轉換開關，擴管方式選擇十分方便，工藝適應性強；主要的電器控制元件均採用進口元件，系統性能穩定可靠。To increase the bearing accuracy of amplitude - comparison, the multi - channel system was chosen, the angle of reaching of moving antenna pattern serial was estimated from the frequency domain using the phase - delay estimating method, and at the same time, the selection of antenna, quantization of signal and touch switches were optimized in concrete engineering practice, and so the requirement of the index was satisfied
為提高比幅測向的精度，選用多通道體制，採取相位延時估計法從頻域來估算移動天線方向圖系列的達到角，同時在具體的工程實現上對天線選取、信號的量化、去摸開關等進行優化，從而滿足指標要求。This paper first begin with the connotation of virtual instrument technology, study and discuss the criterion and the working theory of usb deeply. on the principle of usb1. 1criterion, using usb interface chip usbn9604 and low consumption mirochip c8051f231, we designed the available interface of usb bus and its controlling software, turn the communicating function based usb bus between computer and testing device. second based on the developed interface of usb bus, using microchip pic16c62 and a mount of relays, we designed the multiswitching scanner and its controlling software to complete the funtion of accesses swithing in testing system. third calling the api function inside the windows using vb programming language, communicat with the impelling program of selected hid, achieve the function of testing instrument with usb interface, complete the development of upside software faced testing. at last, based on the deep studying of pcb testing method, used the developed multiswithing scanner and software faced testing, combinated with necessary testing instrument, we constructed the pcb testing system and analized the testing result simply
論文首先從虛擬儀器的技術內涵出發，深入研究和討論了通用串列總線usb規范及工作原理，並依據usb1 . 1規范，採用usb介面晶元usbn9604和低功耗微處理器c8051f231設計開發了通用的usb總線介面及其控制固件，實現了通用計算機與測試設備之間基於usb總線的通信功能；其次，在所開發的usb總線介面的基礎上，使用微處理器pic16c62和多路繼電器開關，設計開發出實現測試系統中測試通道切換功能的多路通道掃描器及其控制固件；再次，採用vb語言編程，調用windows內部api函數，與選定hid類驅動程序進行通信，實現usb總線介面測試儀器功能，完成面向測試的上層軟體開發；最後，在深入研究印刷電路板測試方法的基礎上，利用已開發的多路通道掃描器和面向測試軟體，結合必要測試儀器組建印刷電路板測試系統，並對測試結果進行了簡要的誤差分析。Mine electrical : integrated automation intelligent switch controller ; mine explosion - proof type intelligent combine switch ; mine power center ; mine vvvf devices ; automation system : mine hoist automation system ; coal preparation plant automation system ; drilling machine control system ; lines of motor vehicles and power leakage protection devices, etc
礦用電器：綜合自動化智能開關控制器;礦用隔爆智能組合開關;礦用動力中心;礦用變頻調速裝置等;自動化系統：礦井提升機自動化系統;選煤廠自動化系統;鉆井機自動控制系統;架線電機車電源及其漏電保護裝置等。In chapter 2, the nonlinear feature of iron core of transformer in switching power supply was studied. according to the characteristics of switching power supply, the topology structure of resonant converter was selected. the characteristics of out put voltage and current vs. frequency for the three kinds of resonant converter were analyzed and compared
在第二章中，研究了高壓開關電源中高壓變壓器的非線性特性，選擇了諧振變換器作為高壓大功率開關電源的電路拓撲結構，並對三種形式的諧振變換器的電壓及電流頻率特性進行了分析比較。Remember the following words and expressions : e. g. multimeter ； circuit ， current ； voltage ； resistance ； digital multimeter ； analogue multimeter ； analogue multimeter scales ； zero adjustment control ； zero adjustment control for resistance ranges ； measurement ranges switch ； transistor test socket ； meter probe ； positive terminal ； negative terminal ； anode ； cathode ； red lead ； black lead ； power supply ； connect in parallel ； connect in series
記住萬用表、電路、電流、電壓、電阻、數字萬用表、模擬萬用表、表頭、機械零位調整器、歐姆零位調整器、量程選擇開關、晶體管插孔、表棒、正接線端、負接線端、陽極、陰極、紅導線、黑導線、電源、並聯、串聯等常用英文單詞，並逐步掌握。At the same time, essential protective electro circuit is designed for safe. it chooses pc bus industry programmable computer and programmable controller as the host computer and designs two independent systems to control hoist or lower the stage and orchestra separately. for the sake of running safely, it applies ac motor with brake as the power device that adopt frequency conversion mode and inter lock and journey switch in electric circuit
設計中選擇了pc總線工業控制機和可編程序控制器作為控制系統的主機，設計了兩個獨立的系統分別控制升降舞臺和升降樂池，採用了制動電機作為舞臺升降的拖動裝置，電機的調速方法選擇了可以無級平滑調速、經濟節能的變頻調速方法，並在電氣上採用互鎖和行程開關來保證舞臺機械設備的安全運行。And a brake motor is adopted as a towing device of the elevating equipment. the speed governing of the motor is done by stepless speed regulating, which is a energy - saving frequency converting method. besides, interlock and overtravel - limit switch are used in the electric equipment to ensure the safe operation of the stage machinery equipment, in window2000 operating system, the development of the whole controlling system can be accessed with " c + builder "
設計中選擇了pc總線工業控制機和可編程序控制器作為控制系統的主機，設計了兩個獨立的系統分別控制升降舞臺和升降樂池，採用了制動電機作為舞臺升降的拖動裝置，電機的調速方法選擇了可以無級平滑調速、經濟節能的變頻調速方法，並在電氣上採用互鎖和行程開關來保證舞臺機械設備的安全運行。The great tour purchasing power is the drive power of promoting the region ' s tourism developmentln the regional space, scale economic and regional separation are one of the basic characteristics of promoting tourism industry, so we must arrange the regional tourism industry with a systematic method and give prominence to the central city. for its outstanding area in the regional space, central city has evident superiority in the regional ecnomic development, and has echelon between central city and its periphery scennic spots, which is the inducement mechanism of tourism industry ' s arranging, developing and advancing step by step. for the law of diminishing marginal utility and the theory of equilibrium, the max utility equilibrium of tourism consumption be at the point of tangency of undiscrepancy curve and the cost budget curve
中心城市居民巨大的出遊力是拉動其周邊旅遊地發展重要的內在驅動力；由於地緣關系，區域規模經濟與地域分割並存，是旅遊產業運動的一個基本特徵，為此必須對區域旅遊經濟進行系統化布局，突出中心城市的產業中心性；因其區位條件獨特，中心城市在區域經濟發展中居於明顯的優勢，與周邊城鄉部位存在經濟發展上的梯次性，這種梯次性是區域旅遊生產力布局、產業發展梯次傳動，最終整體聯動的經濟誘導機制；根據邊際效用遞減規律和旅遊者最大效用均衡理論，旅遊消費效用最大化的均衡在無差異曲線與開支預算線的切點（即旅遊目的地選擇的最佳位置）上，且隨著邊際效用遞減，目的地選擇的最佳位置向遠離中心城市方向移動，這就是中心城市與周邊旅遊地互動關系的經濟學解釋。By analyzing an accident during operating the low - voltage drawer - type switch and resulting in the trip of the incoming power feeder of the bus, the correspondent retrofit for the low - voltage drawer - type switch was made, to proride reference for how to select it
摘要通過一起在操作低壓抽出式開關過程中導致母線進線電源開關跳閘的事故原因分析，對低壓抽出式開關實施了相應的改造，為低壓抽出式開關選型提供參考。Applying singlechip in the receiving system, this method can make the best of singlechip ' s resource of software and hardware and provide a reasonable and cheap resolving project for wireless remote control
在發射系統中採用十進制至8421碼編碼器實現對開關按鍵編址，從而對受控電路進行選擇控制；在接收控制系統中引入單片機，通過充分利用其軟、硬體資源，為無線電遙控提供了合理、廉價的解決方案。At the same time, the method of disposal phase shift of ct by compensation is introduced. then the analysis and statistic of electrical power quality, the control scheme and compensating amount of capacitor for reactive power compensation are analyzed respectively. and in the paper, the control with a / y and the switch with ac contactor and solid state switch is valid measure not only for improving operate level economically and amending electrical power quality but also for avoiding of replacing switch frequently and decrease economic loss
然後對現有的演算法進行了詳細的分析、比較，篩選出既能滿足硬體要求又可降低投資、保證精度、簡化軟體的方案，確定了準同步采樣的方案，並通過對準同步采樣誤差的分析，提出了一種從45開始采樣，從而提高精度的采樣數據處理辦法，同時，對于電流互感器相位漂移提出了一種補償辦法，接著對裝置中電能質量分析與統計以及無功補償中電容器的補償量、投切原則也作了相應分析，其中對于無功補償採用y混合接線，並利用交流接觸器和固態開關共同投切電容，不但提高了經濟運行水平、改善了電能質量，而且有效的避免了頻繁更換開關，減少了經濟損失；最後，設計了裝置的硬體電路並繪制了相應的軟體流程圖。The system selects micro control unit and programmable logic device as the core of controller, gsm terminal module as communication device, gps as position equipment, a / d sampling for voltage and current checking, solar battery as power supply, switch dc - dc as power voltage conversion, and so on
以微處理單元與可編程邏輯器件為核心搭建系統控制器，選擇gsm無線通信模塊實現系統通信，全球定位系統實現水標燈定位， a d采樣與轉換實現電壓電流檢測，太陽能電池為系統供電，開關型dc - dc實現電源電壓轉換。In our paper, we research the domestic and abroad low voltage switchgear products and the field bus technique, then conclude the typical mode for these products and select the can bus as our communication method
本文通過對國內外可通信低壓開關電器產品以及現場總線技術進行研究和比較，歸納出可通信低壓開關電器設計中的一些典型模塊並選擇了can總線作為通信手段。High - voltage alternating current circuit - breakers - guide for short - circuit and switching test procedures for metal - enclosed and dead tank circuit - breakers
高壓選擇電流線路斷路器.金屬封閉的和不通電的箱式線路斷路器短路和開關試驗設備指南High - voltage alternating current circuit - breakers - inductive load switching
高壓選擇電流線路斷路器.感應負載開關分享友人