選頻器 的英文怎麼說
中文拼音 [xuǎnbīnqì]
選頻器
英文
frequency selector-
Ecundum motor up yi rating plate, select by means of current rating threefold hereinbefore frequency changer
馬達選后,以馬達上之銘牌,以選用變頻器,Motion controller composed of general chip series is developed and quadruple differential circuit utilizing dual monostable multivibrators with schmitt trigger inputs and dual 4 _ line to l _ line data selectors or multiplexers is put forward
本論文研製了一種用常規晶元系列組成的運動控制器,提出了採用單穩態多諧振蕩器和數據選擇器的四倍頻辨向電路。Production and processing equipment : bearing production equipment, the ball processing equipment, bearing cleaning equipment, packaging equipment bearings, needle roller processing equipment, light jewelry processing equipment, spherical roller processing equipment, rough processing equipment, double - end grinders, spindle, wheel oilstone and other grinding materials, heat production, high - precision coordinates grinder, and outside grinder, seal marking machine, profilometry, contour dynamic analysis, hardness needle - sorting machine, a round instrument, processing tester, processing meter, dynamic vibration and noise analysis, vibration, noise testing device raceway ultra - precision instrument, roughness measuring instrument, the finish detector, sorting machine, converters and bearing products preservatives, lubricants, cleaning agents, such as processing raw materials
生產及加工設備:軸承生產設備球加工設備軸承清洗設備軸承包裝設備滾針加工設備光飾加工設備球面滾子加工設備毛坯加工設備雙端面磨床電主軸砂輪油石和其他研磨材料熱處理生產高精度坐標磨床內外圓磨床印子打標機輪廓測量儀輪廓動態分析儀硬度針分選機圓度儀加工測試儀加工測量儀振動噪聲動態分析儀震動噪聲測試裝置滾道超精儀粗糙度測量儀光潔度檢測儀分選機變頻器及軸承產品防腐劑潤滑劑清洗劑加工原材料等。2, the bearings production and processing equipment signal processing equipment, bearing cleaning equipment, packaging equipment bearings, the bearings production equipment, round instrument, blank processing equipment, double - end grinders, electric spindle and wheel grinding oilstone and other materials, printers marking machine measuring instrument, spherical roller processing equipment, raceway - seiki, roughness measuring instrument, the finish detector converter, hardness needle - sorting machine and new materials, lubricants, preservatives, cleaning agents, testing instruments
2軸承生產加工設備球加工設備軸承清洗設備軸承包裝設備軸承生產設備圓度儀毛坯加工設備雙端面磨床電主軸砂輪油石及其他研磨材料印字打標機加工測量儀球面滾子加工設備滾道超精機粗糙度測量儀光潔度檢測儀變頻器硬度針分選機及新型材料潤滑劑防腐劑清潔劑測試儀器等。Cr selective amplifier
阻容式選頻放大器The author explains the selection of frequency converter, motor and their ancillaries, as well as related verifying formulae in the scheme
對方案中如變頻器、電動機極其輔件的選用以及有關驗算公式做了說明。This machine applies the frequency converter to adjust speed, which can stepless adjust speed and auto rewind
電控部分選用變頻器調速,無段調速自動收料High - frequency link power converters are receiving increasing attention. when the input frequency of ac - ac converter is quite high, such as 20khz or above, in order to make sure the converter switching action is restricted to the zero crossing point of the link voltage, the switching cycle becomes discrete pulse spectrums, however, the conventional pwm converters are ruled out because they would fail either to the efficiency or the low - distortion criteria
當交-交變頻器的輸入頻率非常高,通常為20khz時,為了在零電壓條件下實現逆變器開關管的通斷,變換器的開關時刻必須選擇在高頻交流電壓脈沖為零時,這意味著變換器開關時刻在時間軸上成為不連續的點,而常規的硬開關pwm變換器是將開關時刻選擇在任意時刻。We analysis the characters of double - clad fiber laser with mode selected based on fiber bragg grating in double - clad fiber
對光纖bragg光柵選頻雙包層光纖激光器的特性進行了分析。Through analysising the characteristics of the power system with floating neutral point deeply, the paper puts forward a new plan of single - phase to ground fault line selection on the base of s ' s signal injecton method and gives the hardware and software design. in this design, the high speed sampling and data processing is carried out through using dsp processor ; the large electrice current is drived through the application of a high - performance audio power amplifier and transformer ; the communication between host computer and detectors is realized through rs485 bus technology ; the difference multilevel frequency - selected amplifier is designed and the feeble signal of space is sampled on the base of the theory of magnetic induction ; the interface between dsp and exterior chip and rs485 interface logical is designed through using fpga ; the using of lcd module and keyboard interfacing chip makes the interface between human and machine ; the programme of host computer and detectors is designed through using blocking design method
在本設計中,採用高速的dsp處理器,實現了對故障特徵信息的高速採集與處理;採用大功率的功放晶元與變壓器配合的方法,實現了大電流信號的驅動輸出;採用485總線技術,組建了裝置主機與多探測器之間的主從式通訊網路,實現了多干擾條件下裝置主機與多探測器的可靠通訊;設計了差分式多級選頻放大電路,採用磁感應的方法實現了對空間微弱信號的接收;利用fpga技術,實現了控制器與多外設的介面及數字信號的串並轉換;採用了先進的lcd液晶顯示模塊及鍵盤介面晶元,設計了人機信息交互的介面;採用了模塊化的軟體設計方法,開發了裝置主機及探測器的軟體程序。Bearings roller bearings and other components. bearing ring precision rolling production line ; a high - precision, super efficient grinding automatic production line ; bearing assembly line ; signal processing equipment ; blank processing equipment ; crowning roller grinder ; end - grinder ; coordinate precision grinder ;, cylindrical grinder ; surface grinder ; spherical roller processing equipment ; raceway grinder ; heat treatment ; needle processing equipment ; polishing processing equipment ; roller - seiki ; rolling auto - sorting machine parts bearing hardness sorting machine bearing cleaning equipment ; contact angle measuring instrument ; contour meter ; bearing life experimental device ; bearing packaging equipment ; roundness instrument ; dynamic vibration noise analyzer ; noise vibration test equipment ; printing machine measuring instrument ; roughness tester ; scanning electron microscope ; finish detector ; inverter ; spindle, wheel, whetstone and other grinding materials
軸承套圈精密輾擴生產線高精高效磨超自動生產線軸承自動裝配線球加工設備毛坯加工設備凸度滾子磨床雙端面磨床高精度坐標磨床內外圓磨床平面磨床球面滾子加工設備溝道磨床熱處理生產滾針加工設備光飾加工設備滾道超精機滾動體自動分選機軸承零件硬度選別機軸承清洗設備角接觸測量儀輪廓測量儀軸承壽命實驗裝置軸承包裝設備圓度儀振動噪音動態分析儀振動噪音測試裝置印字機加工測量儀粗糙度測試儀掃描電子顯微鏡光潔度檢測儀變頻器電主軸砂輪油石和其他研磨材料Using fiber grating to substitute traditional wavelength - selecting components, the 8nm tuning range is realized at a repetition frequency of 2. 5ghz. ( 5 ). the wavelength - tuning methods of an active mode - locked fiber laser using a ld as a modulator are researched, and two tuning methods including temperature tuning
( 4 )對主動鎖模光纖激光器的波長調節技術進行了研究,用光纖光柵代替傳統的波長選擇器件實現了主動鎖模光纖激光器的波長調諧,並獲得了波長連續調諧范圍達8nm 、重復頻率2 . 5ghz的穩定的光脈沖輸出。Secondly, we propose and demonstrate experimentally a novel multi - wavelength erbium - doped fiber ring laser by using a mach - zehnder fiber interferometer and composite cavity. as a result, simultaneous multi - wavelength oscillations with narrow linewidth and equal wavelength span are obtained in room temperature. this device has advantageous of simple design fabrication and low cost et al
進一步,我們設計了一種新穎的多波長摻鉺光纖環形激光器,這種激光器是利用mach - zenhder ( m - z )光纖型干涉儀作為梳狀濾波器,並且與復合腔共同選頻,獲得了窄線寬、等間隔的多波長同時輸出,這種激光器具有在常溫工作,結構簡單,成本低等優點。While working in offline ( no pc ) mode, additionally to normal transducer, it has soft - startup function and fast - stop function. and the input of frequency and voltage - coefficient is optional. while working in online mode, additionally to working in offline mode, it can process, display, save and load waveform, which is specialty of computer
脫機工作(無pc )時,它除具有一般變頻器功能外,還具有軟啟動功能、頻率和電壓輸入源可選、急停功能等;在聯機工作時,除具有脫機工作的全部功能外,還具有計算機特有的圖形處理、顯示、存取能力,包括瞬態波形、各種參數動態過程曲線等。The paper utilizes a host computer and video branch to solve the conflicting problem of two pictures collected from two positions
利用視頻選通器和視頻放大器實現了視頻圖像的遠程傳輸,並解決了利用一臺主機完成雙測點圖像採集過程中的時序沖突問題。About the transducer between rotor and power source, the paper uses a cycloconverters, comprising 36 thyristors, and analyzes the control of circumfluence, the method of cosine crossing, the producing of trigger pulse, zero current detecting, commutating logic control and its mathematical model
對雙饋電機轉子側所接變頻器類型,本文也進行了對比分析,對選用的循環變流器的原理還作了進一步的分析,包括環流控制方法、餘弦交截法原理、觸發脈沖產生、零電流檢測和換向邏輯控制等部分,並給出了其數學模型。With the phase - mask method, we make a fiber bragg grating in a few - mode fiber with the peaks at the wavelength around 1060nm. we have studied the temperature dependant characteristics of few - mode fiber bragg gratings theoretical and experimentally. the experimental result of fiber laser based on the few - mode fiber bragg grating is presented
三、在少模光敏光纖中製作了一種波長在1 . 06 m波段的光纖bragg光柵,理論和實驗上給出了少模光纖光柵的溫度敏感特性,另外將其作為光纖激光器腔鏡進行激光選頻,給出了實驗結果。The designed testing instrument has the functions of many instruments, such as frequency selective level meter, oscillator, frequency meter, millisecond meter and so on. all measuring and data processing are accomplished by the application software that is installed in a computer
在功能上,裝置集電平振蕩器、高頻頻率計和選頻電平表等多臺儀器的功能於一體,且裝置的所有試驗操作、測量及數據處理由安裝于通用計算機上的應用軟體完成。According to the requirement of system property, ad6640 and hsp50214b are selected functioning as a / d switcher and specific programming digital downconverter, then the paper highlights the structures, functions, applications, designs and outer interface circuit connect of the ad6640 and hsp50214b
結合系統性能的要求,選擇了ad6640和hsp50214b為a d轉換器和專用可編程數字下變頻器。重點分析了ad6640和hsp50214b的結構功能、應用設計以及外圍介面電路的連接。In its digital processing circuit, clock chip with high precision and temperature compensation is uesd as reference clock. high frequency reversible counter is used to count trimmed impulse signal forward or backward and two pathes saw signals are selected timely by multichannel selector
數字信號處理電路採用高精度、具有溫度補償的時鐘晶元作為基準時鐘,採用高頻可逆計數器對整形后的脈沖信號進行正向或逆向計數,採用高性能的多路選擇器控制兩路saw信號的定時選擇。分享友人