過換向 的英文怎麼說
中文拼音 [guòhuànxiàng]
過換向
英文
overcommutation-
Optimal design of transparency of anode emitter in gate commutate thyristor
門極換向晶閘管陽極透過率的優化設計For electrodeposition by dc methods, the metals deposite uninterrupted and the particles were also embeded uninterrupted into the coatings ; for electrodeposition by pc method, the particles with biggish volume were desorbed from the coatings and returned to the electrolyte again owing to the presence of pulse interval ; for electrodeposition by prc method, the particles carried positive charges are much more easy to desorb from the coatings owing to the effecf of reverse pulse current combined with pulse interval, in addition, the reverse pulse current also could dissovle the metals, further accelerates the desorption of particles, thus the particles size embeded in the coatings by prc method is the least
直流電沉積時，基質金屬的沉積連續進行，粒子在電極表面不間斷嵌入鍍層;單脈沖電沉積由於脈沖間歇的存在使得具有較大體積的粒子會脫附，重新回到溶液中;採用周期換向脈沖時，反向脈沖電流使表面荷正電的較大的粒子更易從電極表面脫附，同時，反向脈沖電流對基質金屬的溶解作用，也會促進粒子的脫附，因此鍍層中復合粒子尺寸最小。隨著鍍層中粒子復合量的增加，三種鍍層的晶粒都明顯細化，說明al _ 2o _ 3的存在阻止了晶粒的長大，提高了電沉積過程中晶核的形成速率。Based on the fact of driven gear moving prior to normal locality when driving gear pair moving from upper dead center to lower dead center, considering all influential elements, the maximum backlash of gear pair can be controlled to satisfy the special driving requirement through controlling the length and deviation of its common normal without increasing its manufacture precision
摘要根據換向傳動齒輪副從上止點向下止點運動時被動齒輪運動超前的實際，從影響齒輪副側隙的各種因素出發，在不提高齒輪副製造精度的前提下，通過拉制齒輪副公法線長度及其偏差從而有效地控制齒輪副的最大齒側間隙，以滿足傳動的特殊要求。Regarding the subject small house grants in the new territories, the committee is seriously concerned that soon after the issuance of the certificates of compliance, some indigenous villagers sold their small houses built under building licences or through land exchanges, notwithstanding the fact that in their applications for small house grant to the lands department, they had declared that they had never made and had no intention to make any private arrangements for their rights under the small house policy to be sold to other individuals or developers
關于「新界小型屋宇批建事宜」 ，委員會深切關注到，盡管原居民在向地政總署提出建造小型屋宇申請時聲明他們從未及無意作出任何私人安排，把他們根據小型屋宇政策獲得的權利售予其他人士或發展商，但部分原居村民卻在完工證發出后不久，便出售其根據建屋牌照或透過換地而獲批建的小型屋宇。In this paper, to counter a flexible beam undergoing large overall motion impacting a fixed slope surface under the effects of grativity, the normal contact model is established based on the hertz theory and non - linear damping term, the tangential contact model is developed by adopting linear tangential contact stiffness to consider the effects of friction force during impact process, and the consistent linear dynamic model including impact is derived by using mode assumption method and lagrangin equation
針對在重力場下作大范圍回轉運動的柔性梁與一固定斜面發生斜碰撞的情況，根據hertz接觸理論和非線性阻尼項建立法向碰撞接觸模型。引入線性切線接觸剛度建立切向碰撞接觸模型，以考慮接觸過程中由於切向相對速度的換向作用引起的摩擦力的變化。利用假設模態法和lagrangian方程建立系統含碰撞過程的一致線性化的動力學模型。Company is specialized in producing more than twenty series and 200 specifications, such as stop valve, ball valve, electrical magnetic valve, one - way valve, distributor, guiding pipe, filter, accumulator, motor. all of the products are of good quality and are adopted by many famous air - conditioner companies : haier, midea, gree, shinco, fedders xinle, hualing, hitachi, yuetu and so on. some products have been exported to usa, middle east, italy, spain and southeast of asia and are warmly welcomed by the customers
公司專業生產空調用截止閥電磁閥電控板四通換向閥球閥單向閥分流器引管儲液筒過濾器電機等二十多個系列200多個品種，產品符合各項技術指標，性能卓越質量穩定可靠，為國內著名的海爾美的奧柯瑪格力新科飛達仕新樂華凌日立月兔等空調企業配套，部份產品已進入美國中東義大利西班牙和東南亞等國際市場，頗受用戶青睞。Through the study with non - linearity friction on simulation model of the stabilized system, in theory the analysis of the angular acceleration loop ' s contribution is given. in testing platform, the measure devices of angular acceleration and velocity constitute the double loops, they are angular acceleration loop and angular velocity loop. and this experiment gives the proof that the angular acceleration loop could eliminate the errors which are taken by the motor ' s reversing
最後，本文在理論上分析角加速度環對隔離度的貢獻；通過對含有非線性摩擦力矩的平臺穩定系統模擬模型的研究，從理論上驗證角加速度環具有克服摩擦力矩的能力；在實驗轉臺上加入由線加速度計構成的角加速度測量裝置，並與測速機構成角加速度環、角速度環雙環結構，驗證了角加速度環對電機換向誤差的消除作用。Second, c language was used to optimize the parameters of exchanged direction structure, and dynamic design technology was used to simulate the action of exchanged direction structure, and the interference test of exchanged direction structure was done
然後運用c語言程序設計對水平換向雙向犁的換向機構進行優化設計；運用動態設計技術對換向機構的運動特性進行動態模擬模擬運動分析，對換向運動過程進行干涉檢驗。This paper uses " virtual neutral point method " to measure the " zero crossing ", then the soft deal " zero crossing " to get the six key position to commutate
本文採用虛擬中點的方法來識別反電勢過零點，然後對過零點進行處理得到無刷電機換向的六個關鍵位置。The system uses the microchip pic16f877 made by microchip co. ltd as a control chip. it fulfills the capture of " zero crossing " point and the multifarious protective functions. it realize the approximately exact commutation of the motor and unmanned supervision of the system
本系統是以microchip公司生產的pic16f877為核心晶元，軟硬體結合完成對反電勢過零點的捕捉和系統的各種保護，實現了電機較為準確的換向和無人監控安全運行。Abstract : the system composed of intelligent control modules for three - phase induction motors is introduced in this paper. this module can conduct starting, reverse braking, and reverse conrtol with current limiting resistance. besides, it can also detect low voltage, overload, and open circuit of 1 or 2 phases, and do protection according to the detection. it especially fits to the controlling of motors which often do starting, braking and reversing
文摘:介紹了一種智能三相電機控制模塊組成的系統，能在串電阻（電抗）起動、反接制動和換向控制的基礎上進行欠壓檢測、過載檢測、斷相檢測及電機故障保護.尤其適用於起動、制動和換向控制頻繁的電機控制場合Based on state space method of modern control theory, the mathematical model for the two way / two position hydraulic operated directional valve in thread cartridge is established
摘要基於現代控制理論的狀態空間法，建立了螺紋插裝式液控換向閥開、閉過程的動態特性數學模型。The chip jk3ce that is one of micro - controllers in motorola 68hc08 family is used as control unit in this system. the zero crossing point of the back emf can be obtained by comparing the terminal voltage with the virtual neutral point, then using the software of the system can figure out the commutation period. the electronic commutation replaces the mechanical commutation in this way
本系統採用的控制晶元為motorola系列單片機中的jk3ce ，反電勢過零點可以通過比較電機端電壓和虛擬中點電壓來得到，將過零點信號送往單片機捕捉埠後由系統軟體來確定換相時刻，這樣就可以由電子換向裝置替代機械換相裝置，有利於提高系統運行的可靠性，並降低了系統維護的費用。It elaborates on the 3 - step start technique. i adopt the method which permits the bldc motor to automatically search the best time to change its operation stage from a separately controlled synchronous one to a self controlled one using the back emf as the commutation signal. this method prevents the stepping out and stopping problems in the changing procedure of the motor
闡述了電機的三段式起動方法，在直流無刷電機由起動階段外同步運行切換到反電勢換向自同步運行的過程中採用了自尋最優點切換的方法，保證了電機在切換過程中不會發生失步和停轉現象。The simple model is for study of control strategy and performance, and the complex model for study of commutation process
一種簡單的模型用於研究系統的控制策略和性能，一種復雜的模型用於研究換向過程的控制。This paper will study the self - controlled varying frequency system with current supply, including control strategy, parameter optimization and commutation process
本文就是對船用永磁電機的電流源型自控頻率調速系統進行模擬研究，主要包括控制策略、參數優化、換向過程的研究。The hoisting mechanisms can be controled independently through the controlvalve
主、副卷揚通過換向閥的控制，可單獨操縱。On the basis of simulation and experiment, the dynamic characteristic of frosting and defrosting of ashp is studied. a set of simple equations is put forward to model the reverse cycle procedure of defrost and is put into the practice to simulate the dynamic characteristics of frosting and defrosting of ashp
在模擬模型研究中，提出了一個簡單的可以用來模擬四通閥換向後系統高低壓平衡和系統循環重新建立的過程，並將這一模型應用到機組動態特性研究。Gear power transmission is mainly through gear meshing to transmit power, realizing reducing and increasing speed or changing direction
齒輪傳動主要是通過齒輪的嚙合作用來傳遞動力及實現減速、增速或換向的目的。Stretch the neck muscle by tilting your head to the side and slightly back, hold for 10 seconds. do it again to the other side
通過頭向兩側傾斜再復位，來拉伸脖子的肌肉，保持10秒鐘。做完一側換另一側。分享友人