起動轉數 的英文怎麼說
中文拼音 [qǐdòngzhuǎnshǔ]
起動轉數
英文
cutting-in speed-
Disigning coolant channel on the firebox of liquid rocket engine to loxodrome ( equal - angle helix ) groove can improve firebox coolant capability greatly. because the width dimension of loxodrome groove is narrow and the depth is deep, some machining methods are incapable, such as end - milling or electrochemistry. according to the peculiarities, a cnc disk - cutter - milling method which is composed of five motion axes with four simultaneously interpolated ones is researched. because most firebox generatrix is composed of complex curves, it is very difficult to get cnc cutting program with manual means. in order to deal with the problem, the loxodrome mathematics model is studied, and an auto - programming software system is developed. the software system can generate cnc cutting program of loxodrome on many kinds of turned surface. the constriction - distension segment of firebox is the most representative workpiece. the sharp changing of its generatrix slope makes loxodrome milling difficult. with the theory analyzing and practice cutting experiment, some applied techniques, which include milling mode and direction, choosing cutter diameter and cutting start point setting, are developed. adopting the technology above, tens regular workpiece have been manufacturing. the two - year manufacture practice has confirmed the validity and feasibility of developed loxodrome coolant channel milling method. the developed technology is also worth to be referenced to other similar workpiece
將液體火箭發動機燃燒室的冷卻通道設計為斜航線(等傾角螺旋線)槽形,可以大幅度改善燃燒室的冷卻性能.斜航線冷卻槽的槽寬尺寸較小而槽深尺寸較大,所以無法使用棒銑刀銑削、電化學等加工方式.針對這些特點,提出了五軸控制、四軸聯動的數控片銑刀銑削加工方法.由於燃燒室外表面的母線輪廓復雜,手工編制數控加工程序難度大.為了解決數控加工程序的編制問題,研究了斜航線的數學模型,開發了自動編程軟體系統.使用該系統,可以生成多種母線輪廓回轉體外表面上的斜航線數控加工程序.燃燒室收斂-擴張段的母線斜率變化大,加工難度大,是斜航線冷卻通道加工的最典型工件.經過理論分析和實際切削實驗,研究了針對該類型工件的片銑刀直徑選擇、銑削方式和方向、刀具調整和起刀點的設置等多項實際的加工方案.採用上述的一系列技術,已經成功地加工了數十個合格工件.經過兩年多的實際生產過程應用,驗證了所開發的斜航線冷卻通道加工方法的正確性和可行性.這些加工技術的研製成功,對其他相似類型零件的加工亦具有參考意義Based on the basic analysis of the structure and power elements of the hybrid vehicle, this thesis presents a powertrain system with a metal pushing belt cvt, aiming to the development status and trend of the hybrid vehicle technology in our country. a rational control strategy and its work mode of this powertrain system are determined, and correlative parameters such as the engine power, the starting torque, and the differential ratio, the rated power and torque of the motor, and the ratio of the torque synthesizer are systematically designed for the changan star 6350b. at the same time, the design of these parameters is considered as the base of the simulation of the motor control system in next step
在對混合動力汽車的結構型式和動力元件進行基礎性理論分析后,針對我國汽車技術發展現狀和混合動力汽車技術的發展趨勢,設計了一種基於金屬帶式無級自動變速器cvt混合動力汽車動力傳動系統方案,根據該傳動系統方案制定了比較合理的控制策略和工作模式,並針對長安之星6350b設計了發動機功率和起始轉矩、主減速比、電機的額定功率和轉矩、轉矩合成器速比等相關參數,為下一步的電機控制系統模擬實驗打下基礎。According to its configuration, the monolith is considered to be a porous media. based on the monolith model and the use of software fluent, the research on the light - off characteristic and conversion efficiency of three - way catalytic converter is processed
在所建催化轉化器模型的基礎上,根據載體具有分佈細小孔道的特點,將其作為多孔介質處理,利用fluent軟體,對冷起動階段三效催化轉化器的起燃特性和轉化效率作了數值模擬。In the process of parameters identification, the stator voltag is considered as input quantity and the stator current and motor rotate speed are considered output quantities. the rotor resistance and leakage inductance are estimated on - line and the identification results is got at last
在參數辯識過程中,以電機起動時的定子電壓為輸入量,定子電流和電機轉速為輸出量,對復合籠條轉子感應電動機轉子電阻和漏感進行在線估計,最後得到轉子電阻和漏感的辨識結果。Relative to euro, euro emission regulations add the test of emission in 40s after cold - start. in order to meet the more strict emission regulations, the key question is how to make the three - way catalytic converter to light - off and increase the conversion efficiency. so it is necessary to do a numerical simulation on light - off characteristic and conversion efficiency of three - way catalytic converter in cold - start stage
歐排放標準相對于歐排放標準增加了冷起動頭40s的有害排放物測試,為滿足更嚴格的排放法規,如何使三效催化轉化器盡快起燃,提高對排氣的轉化效率是關鍵問題,因此對三效催化轉化器在發動機冷起動階段的起燃特性和轉化效率進行數值模擬研究是大勢所趨。Ming dynasty, under the influence of the western odditily technique, some big graves even used " eight treasures turn axis " of the western an organization, particularly the emperor ' s mausoleum of manchu dynasty, be rated as a masterpiece that gather for several thousand years, anti - piracy technology of integral whole, the big warlord dianying sun wants to dig to open the east mausoleum, use the valuables which in the mausoleum acts as military payroll, starting large quantity troops, connecting to dig and explode used 5 or 6 days for successfuls, the its hard degree is imaginable
「到了明代,受到西洋奇特技巧的影響,一些大的墳墓甚至用到了西洋的「八寶轉心」機關,尤其是清代的皇帝陵墓,堪稱集數千年防盜技術於一體的傑作,大軍閥孫殿英想挖開東陵,用裏面的財寶充當軍餉,起動大批軍隊,連挖帶炸用了五六天才得手,其堅固程度可想而知。 」The two key parameters, back electromotive force ( emf ) and reactance of d q axial armature reaction are investigated, too. in the process of asynchronous starting, mathematics model of repmsm is established with 1, 2, 0 complex number coordinate system. combined with the model, electromagnetic torque is studied
論文還研究稀土永磁同步電動機的異步起動過程,建立了稀土永磁同步電動機起動時的數學模型,並對電磁轉矩的性質進行了研究,論文還提出了起動時電磁轉矩的計算方法,論文對稀土永磁同步電動機的牽入同步過程進行了原理性分析,論文也對電機參數對于電機起動性能影響進行了研究。Aiming at the uncertainty brought by the rotating inertia and motor torque coefficient during the field weakening process, the mixed sensitivity robust controller based on inner mode principle is designed
在此基礎上,針對實際直流電機速度控制系統弱磁調速過程中存在的電機轉矩系數變化和轉動慣量等因素引起的參數不確定性特性,應用內模原理,設計了混合靈敏度魯棒控制器。The electromagnetic field theory and the variation method is applied to found the 2d mathematics model during the process of starting of the induction machine with compound cage rotor. the dispersion, element analyse and collectivity composing of time - variation field are given
利用電磁場理論和變分法建立了復合籠條轉子感應電動機起動時二維電磁場的數學模型,給出了正弦時變場單元分析過程和離散格式以及最終的總體合成方程。Sf120q dual - swift - fork rotor winder is the special winding equipment designed for mini - engine rotor winding with even slot, it s suitable for winding rotor with hook or opened - slot adapter for vehicle, motorcycle starting engine, electrical tool engine and so on
Sf 120q型雙飛叉轉子繞線機是專為偶數槽微電機轉子繞線而設計的專用繞線設備。適用於汽車、摩托車起動電機,電動工具電機等帶鉤或開槽型換向器的轉子繞制。In chapter two, described the whole design process of dome camera, and researched the control of step motor for improving its " stability and precision, analyzed the reason of step motor vibration and brought forward the control arithmetic and realization method after research the system model of step motor. the experiment result is ideal
推導了步進電機系統的數學模型,研究了步進電機的振動產生機理,並提出步進電機恆轉矩平穩控制策略和實現演算法,實驗結果和理論推導結果十分接近,最後對步進電機起動制動作了詳細研究。This paper deals with synchronous measure technology of the cylinder pressure with the engine cold start by adoping micro - chip aduc812, and it discuss the analysis of breakdown of engine cold start with the mixture of technology of information. through the analysis of the parameters of cylinder pressure of the engine cold start, turning speed and starting electricity, and according to the measure data and witness, a theory is to be inferred, and with the help of breakdown - checking systems, the engine piston groups and the breakdown of starting system can be judged. at last, the. remote measure technology of cylinder pressure ' s parameters
本文採用微處理器晶元aduc812研究發動機冷起動氣缸壓力的同步測試技術,討論了基於信息融合技術的發動機冷起動故障診斷方法。通過對發動機冷起動氣缸壓力、轉速、起動電流等參數的測試,根據測試數據和證據推理理論,藉助故障專家系統,判定發動機氣缸活塞組以及起動系的故障。最後研究了氣缸壓力等參數的遙測技術。8. a pulsating torque minimization approach based on disturbance observer is proposed. the new disturbance observer is designed to observe the unknown torque disturbance caused by the torque ripple, the varying of the motor parameters, the changing of load torque and the not ideal performance of the inverter
該系統將負載轉矩、轉矩紋波以及由電機參數的變化引起的轉矩干擾作為系統干擾,用干擾觀測器進行觀測,以此為基礎對轉矩脈動進行補償,實現對轉矩脈動的抑制。Regard how to structure the control system of sensorless bldcm with dsp - tms320f240 as the centre in this paper, the detailed argumentation course of the motor startup, bemf terminal voltage measurement and control strategy is given out, give and pay concrete details for the software and hardware realization and experimental result. in order to treat the bldcm control system with dsp clearly, the full paper divides into six chapters altogether : chapter one, introduceing the development course, the structure characteristic and operation principle, etc. of bldcm in the introduction ; chapter two, directed against the startup issue of bldcm, the chapter give and publish the rotor measure pulse orients technology for motor startup in detail ; chapter three, proceed with mathematics model of the bldcm, expounding the control schemes ; chapter four, two important devices introducing : dsp ( 240 tms320f ) and power invertor control chip ( ir2131s ) ; chapter five, give and publish the detail of hardwares of control system ; chapter six, by ccs ide of ti, realize the control schemes in the front chapters with software, offere the procedure flow chart of main subroutine and some key place of programming, the experiment result in addition
全文共分六章:第一章、緒論中介紹了bldcm的發展歷程、電機本身的結構特點和工作原理等;第二章、針對五位置傳感器bldcm的起動問題,文中詳細給出了檢測脈沖轉子定位起動技術;第三章、從電機的數學模型入手,詳細論述了反電動勢端電壓法和系統的控制策略;第四章、介紹了硬體實現中的兩個重要器件: dsp ( tms320f240 )和功率管逆變器控制晶元( ir2131s ) ;第五章、詳細給出了控制系統的硬體實現細節;第六章、利用ti提供的ccs集成開發環境,將前面章節的控制方案用軟體加以實現,給出了主要部分的程序流程圖和一些編程要點以及實驗結果。When performing daily routines or household chores, take a break every half an hour to stretch and exercise your neck in different directions by looking up and down, left and right. you can also raise and squeeze your shoulders together and then relax
在日常生活及工作時,應每隔大約半小時,將頭向上下左右各個方向活動,同時亦可把肩膊提起向前及向後打轉數分鐘,以減輕頸部壓力。All of the results indicated the turbulent boundary layer had been turned into the laminar layer. the skin friction coefficient drops rapidly. this result not only proved the phenomenon of reverse transition had occurred, but also showed that this condition was drag - reducing condition
實驗結果表明板面附近的流動已由湍流流動轉變為層流流動,同時平板表面的摩擦系數較沒有溫度梯度時有大幅度下降,不僅證明了邊界層逆轉捩現象的存在,也說明了這種條件起到了減阻的效果。In this paper, the starting process is studied by simulation thich is carried out using identification parameters and common test parameters respectively and the results are compared with that of test. it can be indicated that the running state is considered by the method of indentification parameters
在論文中,分別利用辯識參數和常規實驗測試的參數,對復合籠條轉子感應電動機的起動過程進行模擬,將兩種模擬結果與實測結果比較,表明利用辨識的方法測取電機參數能夠考慮到運行狀態對參數的影響。As a result of compound material, there is large difference between the starting rotor parameters and the steaty - state work parameters. big error will be caused if the parameters which are measured by common non - load and locked - rotor tests are used to analyze the starting performance
由於復合材料的作用,使得復合籠條轉子感應電動機起動時的轉子參數與穩態運行時有較大差異,所以用常規空載、短路實驗測得的參數,在分析起動性能時誤差較大。Little systematical research has been carried out long after the new start scheme was presented, especially lack of quantified analysis of the nature of the system and the characteristic of torque output in standstill and low speed range
單相交流勵磁作為一種新型的起動方案提出后,一直還沒有系統地、從數量關繫上揭開該系統的內在規律,特別是靜止和低速時起動轉矩的特性。During the process of numerical calculation of electromagnetic, the stator terminal voltage is set as restriction condition and the starting current is iterated in order to obtain the starting current and starting torque under the rating voltage. finally, the calculated results and measured results are compared to test that the calculation of starting performance can agree with the need of practical engineering project
在電磁場的數值計算過程中,以定子端電壓為約束條件,對定子起動電流進行了迭代計算,得到了額定電壓下的起動電流和起動轉矩,最後把正弦電磁場計算結果與實測結果進行了對比,表明復合籠條轉子感應電動機起動性能的計算結果滿足工程實際的需要。分享友人