節流元件 的英文怎麼說
中文拼音 [jiéliúyuánjiàn]
節流元件
英文
restricting element-
The load current is handled directly by the controller through semiconductor switching devices.
負荷電流由調節器通過半導體開關元件直接控制。In the paper, on the basis of research of static state and transient state in the scr and series connection valve circuit, the high voltage scr changing current valve device has been developed for ac - dc - ac high voltage commutatorless motor. the series connection valve circuit has been designed and simulated. the hardware design and software programming of trigger pulse system and monitoring system in the photo - electronic - photo fashion has been completed
無換向器電動機在火電廠等工礦企業的電機調速節能領域中有十分廣闊的應用前景,本文在對晶閘管元件和串聯閥電路的靜態特性和動態特性研究的基礎上,研製了用於交直交電流型高壓無換向器電動機的高壓晶閘管換流閥裝置,進行了串聯閥電路的設計和模擬,完成了電光電方式的觸發脈沖系統和監測系統硬體設計及軟體編程,並進行了裝置的實驗調試。Borrowing ideas from design theory and structure type of oil hydraulic proportional throttle valve and taking domestic and overseas correlative development as reference, this paper determines working conditions of the valve, designs its structure, selects suitable materials of its components, and performs corresponding intensity and temperature check
在借鑒油壓比例節流閥的設計理論、結構型式以及參考國內外相關研究成果的基礎上,確定了水壓比例節流閥的工作條件,設計了水壓比例節流閥的結構型式,選取了合適的元件材料,並進行了相應的強度和溫升校核。According to a series of experimental data, the effect of following factors on the temperature in the ultra - low temperature box and cop are analyzed : the mixture composition, the pressure ratio and the return fluid extraction ratio of the rectifying column, the refrigeration capacity and the flow rate through throttle valve
並根據一系列實驗結果,分析了工質配比、循環壓比及精餾柱迴流液的抽取率、加熱量和節流元件對低溫箱內溫度和系統cop的影響,為今後的進一步研究指明了方向。The control method was introduced and the hardware of the controller was designed. the controller uses the 89c52 and 89c2051 as the main control unit and produces the on and off and angle signal of each phase. combined with protecting signal and current chopping signal, it can control the igbt on and off
介紹了srd的控制方式和本系統所採用的控制策略,對控制器的硬體電路進行了設計,控制器以89c52和89c2051雙cpu為主控單元,採用模糊調節,發出相通斷信號和角度信號,並和電流、電壓等保護信號以及斬波信號相結合,實現對主功率元件的通斷控制。The energy input of the ptcrs is made with the relational expression, with the current limiting function, saving more electricity than the one of the nickel and chromium wires
Ptc元件的能量輸入採用比例式,有限流作用,比鎳鉻絲等發熱元件的開關式能量輸入還節省電力。The nonlinear problem is ubiquitous and is difficult to solve in electro - hydraulic servo system. it is caused by the throttling property, because of the existing of the servo valve, proportion valve and throttling valve, by the dead band, the back lash and so on
非線性是電液伺服系統中普遍存在且至今沒有很好解決的問題,這些非線性主要由電液轉換和控制元件(伺服閥、比例閥或節流閥)的節流特性和液壓動力機構的滯環及死區等因素引起。According to theoretical analysis and experiments on the throttle control system, the quantitative relationship among the speed of executive element, the flow area of the throttle and the load is determined
本文通過對進油路節流調速系統的理論分析與試驗研究,闡明了執行元件的運行速度與節流閥的通流面積以及負載之間的定量關系。Abstract : according to theoretical analysis and experiments on the throttle control system, the quantitative relationship among the speed of executive element, the flow area of the throttle and the load is determined
文摘:本文通過對進油路節流調速系統的理論分析與試驗研究,闡明了執行元件的運行速度與節流閥的通流面積以及負載之間的定量關系。Used the metering - out control system in which the hydraulic cylinder was the executive element as research object in this thesis, the experimental research about the effect on the pressure p1, p2 of the hydraulic cylinder chambers when series - connecting throttle valve or governor valve on the return oil - line under the step load changing have made
本文以單出桿液壓缸為執行元件的出口節流調速系統為研究對象,在其迴路上分別串接節流閥和調速閥,當負載發生階躍變化時,對液壓缸兩腔壓力p _ 1 、 p _ 2的影響進行了試驗研究。Through experimental research, the calculation formula that the pressure highly - adjusted capacity of two cylinder chambers varied with the change of step load and the formula about hydraulic elements main parameter ( rated pressure ) were both made, which had important valuation in selecting the main parameter about this hydraulic system
通過試驗研究得出了出口節流調速系統中液壓缸兩腔壓力超調量隨負載變化的計算公式以及出口節流調速系統中液壓元件主參數(額定壓力)計算公式,有利於正確選擇系統的元件及主參數。On the base of the quasi two - stage compression heat pump system with economizer, considering that it can make use of the pressure energy of liquid with high pressure and minish energy losing of the system, ejector is adopted to replace the throttle in the assistant loop, and design the quasi two - stage compression heat pump system coupled with ejector
本課題正是在帶閃發器準二級壓縮熱泵系統的基礎上,考慮到噴射器元件可以有效利用高壓流體壓力能,減小系統能量損失的優點,將其引入系統以替代輔路節流閥,設計出了準二級壓縮?噴射復合熱泵系統。In the aspect of workflow modeling, this thesis introduces a flexible workflow meta - model which is capable of tackling the problems related to business events based synchronization, multiple activity instances, service type activities and run - time process modeling. such favorable features are approached by extending the traditional activity network model with modeling constructs, such as wait connectors, parallel blocks, services and modification blocks
在工作流建模方面,通過擴展傳統活動網路圖模型中的模型元素,加入等待節點、并行模塊、服務和修改模塊,提出了一種柔性的工作流元模型,很好的解決了原有的業務事件同步、多活動實例、服務類型活動和運行時過程建模等問題。Ventilation for buildings - air terminal devices - aerodynamic testing of dampers and valves ; german version en 1751 : 1998
建築物通風.氣配裝置.節流元件和閉鎖元件空氣動力檢This thesis analyzes all kinds of throttle components, points out the advantage of adapting eev, and analyzes the start - up and the discharge characteristics of eev, and dynamic response of refrigeration systems when the opening degree of eev is changed, etc. eev is placed into a tumoff position while the unit starts up, and after being kept for a period of time it is placed into a bigger position, after some more time it is put into a basic control
本文對比分析了冷藏箱製冷系統各種節流元件的特點,指出電子膨脹閥應用的優勢,同時分析了電子膨脹閥的啟動特性、流量特性以及系統在閥開度變化時的動態響應。電子膨脹閥在啟動時應先使電子膨脹閥處于關閉位置,延時一段時間后,再將閥開至一個較大的位置,再延時一段時間后轉移到基本的控制。Pneumatic components for petroleum drilling and production equipment - one - way restrictor valve
石油鉆采設備用氣動元件單向節流閥Analyzes the control action of facts devices on line flow and node voltage when the faults of generator and line occur random
分析了發電機和線路隨機故障時facts元件對線路潮流和節點電壓的控製作用。The application of magnetic components in electronic ballast is introduced in this article. and the advice of green light design with analysis of magnetic components is also presented
摘要:文章介紹了磁性元件在電子鎮流器中的應用,分析了磁性元件的電磁性能,以節能高效、實現綠色照明為著眼點,對電子鎮流器設計中的磁性元件選擇提出了建議。Electromechanical components for electronic equipment. basic testing procedures and measuring methods. part 11 : climatic tests. section 7 : test 11g : flowing mixed gas corrosion test. european standard en 60 512 - 11 - 7
電子設備的電機元件.基本試驗過程和測量方法.第11部分:氣候試驗.第7節:試驗11g :流動混合氣體腐蝕試驗It is a one - way flow control valve which can regulate the flow of compressed air in air passage. it will control forward flow, and not control reversed flow, so as to change the one - way movement speed of executive components such as air cylinder
單向型流量控制閥,在氣路中調節壓縮空氣的流量,氣源正向流動時節流,反向流動時不發生節流,以改變氣缸等執行元件的單向運動速度。分享友人