相位開關 的英文怎麼說
中文拼音 [xiāngwèikāiguān]
相位開關
英文
phase switch-
Cutout fuse boxswitch not provided with phase identification
斷流熔斷器箱開關掣並無相位標志。Recently, using solid clay brick is gradually prohibited, so the new wall material is required to fill up the new architecture. many sections research on this field, using fly ash to develop new building materials is the mostly adopted method, among the new building materials, fly ash foamed concrete is a noticeable one because of its outstanding merits such as light weight, heat preservation, sound insulation and good resisting earthquake. using fly ash to develop foamed concrete can not only become fly ash into resources, but also provide a new kind of building materials for the innovation of wall materials, which has good economy and society ben efits
近年來,由於墻改「禁實」政策的實施,市場急需新的墻體材料來填補新建築所需,許多單位相繼開展了各有關研究,綜合利用粉煤灰研製開發新型建材逐漸成為了主流,其中多孔混凝土特別是粉煤灰發泡混凝土,正以它突出的輕質、保溫、隔音、抗震效果好等優點,成為一種引人注目的建築材料,利用工業固體廢棄物粉煤灰研製發泡混凝土不僅能實現粉煤灰的資源化,而且還可為墻體材料的改革提供一種新型建築材料,具有較好的經濟效益和社會效益。The three - order modulator has a 2 - 1 cascaded structure and 1 - bit quantizer at the end of each stage, the modulator is implemented with fully differential switched - capacitor circuits. and then, the discussion will begin by exploring the design of various circuit blocks in the modulator in more detail, i. e., ota, switched - capacitor integrator, quantizer, two - phase non - overlapping clock signal, etc., at the same time, these circuits will be simulated in spectre and hspice. at last, the whole cascaded modulator will do behavioral level simulation by matlab soft and simulink toolbox
本論文中,首先介紹模數轉換器的各種參數的意義,以及一階sigma - delta調制器和高階sigma - delta調制器的原理;給出解決高階單環sigma - delta調制器不穩定性的方案,引入級聯結構調制器,特別針對級聯結構調制器中的失配和開關電容積分器的非理想特性進行詳細的討論;本設計的sigma - delta調制器採用2 - 1級聯結構和一位量化器,調制器採用全差分開關電容電路實現;同時對整個調制器的各個模塊進行了電路設計,包括跨導放大器、開關電容積分器、量化器、兩相非交疊時鐘等,並利用hspice和spectre模擬工具對這些電路進行模擬測試;最後,利用matlab軟體和simulink工具對整個級聯調制器進行行為級模擬。Eatablish to have the position. electric leakages swith. deend the ice to protect with heat, insure to operate the absoluteness the safety
設有相位制,漏電開關,防冰保護和高溫保護,確保操作絕對安全。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。The key problems of gps carrier phase measurement are how to solve the integer ambiguity of gps carrier and how to detect and compensate the cycle slip of gps carrier in the period of navigation process
載波相位測量定位的關鍵問題是如何確定整周模糊度和周跳的探測和修復。本文對此問題展開研究,討論了在載體動態運行環境下,動態整周模糊度問題和周跳的探測與修復問題。Recently, with the development of gps, many researchers pay attention to the aircraft ' s precise entrance and landing through gps carrier phase measurement. the key technology of aircraft ' s precise entrance and landing is gps carrier phase integer ambiguity resolution on the fly
近年來,隨著gps的發展和完善,利用gps載波相位觀測量實現飛機的精密進場與著陸的研究,開始受到人們的關注,而載波相位整周模糊度的動態確定是其中的關鍵技術。In this thesis, a clamp passive loseless snubber is put forward for igbt inverters after analysing the dissipation of hard switching and soft switching with snubber. then theoretical analysis and simulation are been take to prove the work of the snubber. and a real inverter circuit and its auxiliary circuits are built
本文在對igbt在硬開關和有緩沖電路的軟開關情況下的開關損耗進行分析之後,提出一種適用於igbt逆變橋的鉗位式無源無損緩沖電路,然後進行了理論分析和模擬分析,並製作了實驗電路和相關輔助電路。Ppfc working principle, circular current and effects of clamping capacitor are studied in this paper in detail. because of the clamping capacitor, ppfc have some good features compared with ppc : reducing the fluctuate of the input current ; restraining the voltage spike of the power mosfet ; avoiding the bias - magnetic of the transformer
由於箝位電容的加入,相對于推挽電路而言,該拓撲具備了一些獨特的優點:減小了輸入電流的脈動:削弱了開關管的關斷電壓尖峰;有效抑制了變壓器的偏磁。In the synchronous " model, based on the idea of polygonal flux linkage locus, by means of constructing the switch state period table of three phrase voltage inverter is required. in the brushless model, the igbt ( isolated gate bipolar transistor ) switch state period table is gained by gal ( generic array logic ) which analyzes the signal of position feed - back
在同步方式下,基於多邊形磁鏈軌跡法的思想,用作圖法求得三相電壓型逆變器的pwm波形序列;在無刷直流方式下,用gal對位置反饋信號進行邏輯綜合,得到開關管的導通規律。B ) the design of the new valve : for the displacement of the actuator, hydraulic magnify is used, and the stracture that has comparatively motion beteen harness and body and comparatively stillness between harness and body is adopted. the static characteristic of the new valve and also its dynamic characteristic, the factors that affect the valve ' s characteristic are analyzed
設計新型高速開關閥:對驅動器位移採用了液壓式放大,並採用閥套與閥體之間有相對運動,閥芯相對閥體不動的結構。分析了新型高速開關閥靜動態特性以及影響其性能的主要因素。The paper first reviews the research background and actuality of the filter " s design in china and other country, introduces the meaning of the project and the work of the paper, narrates the theory of the switched - capacitor network and the basic switch building blocks, analyses the related factors of the design of sc filter. such as the selection of the architecture, the trade off of the opamp " s gain, bandwidth, phase margin, slew rate and setting time, the effect of the switch " s on resistor, how to reduce the charge injection and the clock feed - through, the power consumption and the selection of the sampling frequency and so on
本文首先回顧了濾波器設計的國內外研究背景和現狀,介紹了本課題提出的意義以及本文的主要工作,論述了開關電容網路原理和基本開關模塊,分析了開關電容濾波器設計的相關因素:電路結構的選擇,對運算放大器設計中高增益、寬帶寬、相位裕度、轉換斜率和建立時間等的折中考慮,開關的打開電阻對電路的影響,開關電容電路中怎樣減少電荷注入和時鐘饋通,以及整個電路的功耗問題和采樣頻率的選擇等。Due to the complexity of the structure and control of cycloconverter - type three - phase hf link inverter for soft - switching based on phase - shift - controlled full - bridge mode, a simple and optimized vvvf control strategy is proposed. this control strategy includes : produced pwm by space voltage vector ( svm ) and equivalent carrier frequency fe = 1 / te are introduced into the pdm control of the cycloconverter ; softened equivalent pwm wave is generated at the notches of hf voltage pulses ; the harmonious control between regulating pulse width by phase - shifted angle and regulating voltage of equivalent pwm is to minimize the harmonics content of output voltage of the inverter
西安理工大學博士學位論文針對這種前級移相全橋軟開關周波變流型三相高頻鏈逆變器結構和控制的復雜性,提出了一種實現簡單而整體優化的vvvf控制策略:將空間電壓矢量產生p姍的方法svm和等效載波頻率fe = 1 / te引入到周波變流器的pdm控制;按高頻電壓脈沖前後沿軟化等效p翎波;用移相調節高頻脈沖寬度和等效p姍調壓協調控制逆變器輸出電壓,在滿足輸出電壓條件下使諧波最小。With two mechanically controllable switching points, users have a practice - oriented function at their disposal, with which the pressure dependent working points of the pump can be adjusted independently of one another in the simplest manner ; the pump can be controlled directly
作者可以由兩個機械控制的開關點實現定位於實際應用的功能,並通過這種功能用最簡單的方式獨立地調整泵的壓力相關工作點:可以直接地控制泵。Dissertation explains the theory and characteristices of switched reluctance motor based on its idealy linear math mode. analyseing and researching on control characteristic, control parameters, control strategy and their relationship, thesis designed hardware circuit and software of control system based on the strategy. dissertation discussed the transform function of system and illustrates it is essential to chang parameters in the pid control arithmetic, estimating parameters for the digital pid controller primarily, dissertation also researched on the exciting and protection of igbt
論文以開關磁阻電動機的理想線性數學模型為理論基礎,對其原理特性進行了說明,對開關磁阻電動機的控制特性(轉速、轉矩) 、可控參數(導通角、關斷角、相電流、繞組端電壓)與控制策略(電流斬波、電壓斬波、角度位置控制等)及它們之間的關系進行了研究和分析。Based on the variables of inlet length, compression ratio, inlet opening phase and the exhaust closing phase, multi - objective optimization was conducted for power, torque, combustion noise and fuel consumption indicators with constraint conditions of fuel consumption rate and the maximum breakout pressure
以進氣道長度、壓縮比、進氣開啟相位、排氣關閉相位為可變因素;以比油耗、最高爆發壓力為約束條件,針對滿足功率、扭矩、燃燒噪聲和油耗指標進行多目標優化設計。The company mainly engages in development and manufacturing of medium voltage vacuum interrupters, vacuum circuit breakers ( vcb ) and gas insulated switchgear ( gis ) as well as after sales services
公司位於江蘇省無錫高新技術產業開發區內,主要從事中高壓陶瓷真空開關管,固封式真空斷路器,氣體絕緣開關設備及其相關產品的開發、製造、市場銷售和售後服務,致力於中國的電力工業。Since our founding in 1906, yamatake has built on its core of measure - ment and control technologies to maintain its position at the forefront of japan s auto - mation industry. over our long history, we have built a sterl - ing reputation for providing optimum solutions in industrial automation, factory automation and building automation. sya was approved as chinese distributor of yamatake in 1999, and began to cooperate in regulator, recorder transmitter, sensor, actuator, combustion control, air conditioning control, anti - exploding switch, and other relative equipment
上海鷹琪自動化成套設備有限公司於1999年取得山武公司的中國區代理權,並開始了與山武公司在調節器記錄儀指示儀轉換器傳感器執行器燃燒安全控制器空調控制器防爆限位開關系統相關設備等產品領域的合作,通過不斷努力,取得了相當不錯的業績,尤其調節器執行器燃燒安全控制器及防爆限位開關等產品方面有獨道的技術服務經驗,深受廣大用戶好評。The voltage - controlled oscillator and the dual - modulus prescaler are the most crucial blocks in the pll frequency synthesizer. two kinds of voltage - controlled oscillator ( the quadrature voltage - controlled oscillator based on symmetrical spiral inductors and differential varactors, and the voltage - controlled oscillator with wide tuning range based on mos varactors ) and two kinds of prescaler ( the prescaler using phase - switching techniques, and the prescaler using dynamic circuit techniques ) are proposed. then, the complete pll frequency synthesizer is implemented, in which
壓控振蕩器和雙模預分頻器是鎖相環型頻率合成器中最關鍵的兩個模塊,本論文分別實現了兩種類型的壓控振蕩器(採用對稱螺旋型電感和差分二極體型容抗管的正交壓控振蕩器和使用mos型容抗管的大調諧范圍壓控振蕩器)和兩種類型的雙模預分頻器(使用相位開關技術的雙模預分頻器和使用動態電路技術的雙模預分頻器) 。These studies in the thesis have been done as follows : it is proved that if the three - phase single - switch boost type power - factor - correction can work in continuous - current - mode, its power factor can not reach unity. therefore, it is not qualified for high power and high requirement application. according to the ac side equivalent circuit of the three - phase three - switch boost type power - factor - correction, the equations to realize unity power factor have been deduced and realized by integrate - reset - control circuit
本論文把積分復位控製成功應用於三相功率因數校正技術中,作了以下幾方面的研究: 1 .從理論上證明了三相單開關boost型pfc即使工作在ccm ,其功率因數也不能達到1 ,在大功率和對功率因數校正能力要求較高的場合,三相單開關boost型pfc達不到要求, 2 .根據三相三開關boost型功率因數校正交流側的等效電路,推導出實現單位功率因數所需的控制方程,並用積分復位控制電路進行實現,在理論研究的基礎上進行了模擬研究。分享友人