旋轉坐標 的英文怎麼說
中文拼音 [xuánzhuǎnzuòbiāo]
旋轉坐標
英文
rotational coordinates-
Analyse the tooth geometry of klingelnberg cyclo - palloid spiral bevel gear., according to the relative position and kinematic relation of the cutter heads, virtual crown gear and the processed wheel blank, established the system of coordinates of the gear cutting, dedcuced the tooth face equation of the virtual crown gear, according to relations of the gear cutting and space theory of engagement, deduced the tooth face equation of klingelnberg cyclo - palloid spiral bevel gear, and drawing the three - dimensional graphs of the virutal crown gear and klingelnberg cyclo - palloid spiral bevel gear according to the design and setting parameters
對克林貝格擺線齒錐齒輪進行齒面幾何分析。根據銑齒加工中刀盤、搖臺和輪坯的相對位置和相對運動關系建立了切齒嚙合坐標系，由矢量的旋轉推導了產形輪齒面方程;根據空間嚙合原理和切齒嚙合關系推導了被加工齒輪的齒面方程;由設計參數和銑齒調整參數計算得到齒面離散數據，繪制了產形輪和擺線齒錐齒輪的三維齒形。The integral equations governing the three - dimensional viscous flow inside the turbo - machinery in the rotating coordinate system are presented in this paper, the viscous effects are simulated by the distributed body force described by professor denton j. d. the time - marching method and explicit finite volume difference scheme are employed to solve the flow inside the turbo - machinery
本文給出了相對旋轉坐標系下葉輪機械內部三維粘性流動的守恆型積分型方程組，利用dentonj . d .教授的粘性體積力法來模擬粘性對葉輪機械內部流動的影響，採用時間推進法和有限體積差分格式對葉輪機械內部的流動進行求解。Firstly, this paper designs a polar coordinate barotropic vorticity equation semi - spectral model and a quasi - geostrophic grid model in order to research the propagation of vortex rossby waves and tropical cyclone intensity change entirely
本文首先設計了一個極坐標系正壓渦度方程的半譜模式、一個準地轉格點模式對渦旋rossby波傳播和熱帶氣旋強度變化進行了較為系統的研究。The addition formula of spherical harmonics function of degree n and order 1 is derived using the relations between coordinate varieties after coordinate rotating and the property of the associated legendre polynomial. the relations among the magnetic vector potential, the modified magnetic vector potential and the second - order vector potential ( sovp ) are shown going forward one by one. it is explained that the solutions of electromagnetic fields in different coordinate systems can be transformed and an example having analytical solution is given
利用坐標旋轉后球坐標變量間的關系和連帶勒讓德多項式的性質推導得到了n次1階球諧函數的加法公式；以遞進的方式說明磁矢量位、修正磁矢量位與二階矢量位的關系，寫出了引入二階矢量位的過程；以時諧場矢量邊值問題為例，闡明了不同坐標系下電磁場解的相互轉化原理，給出了一個解析解的轉化例子；在球坐標下，引入了較球矢量波函數更普遍的兩類矢量函數，給出了其在球面上的正交關系。In this paper, a new technique is proposed for rotation, scaling and translation invariant image watermarking based on log - polar mappings and phase - only filtering
該文的研究工作和貢獻是：基於對數極坐標仿射lpm和相位濾波器pof ，提出了一種不受旋轉按比例縮放和位移rst影響的數字圖像水印技術。The vector control mathematical model of linear induction motor is established under the synchronization reference frame
摘要在同步旋轉坐標系下，建立了直線感應電動機的矢量控制數學模型。The steady - state errors of current closed loop system with pi current regulator in stationary and synchronous frames are compared using complex vectors. also, the corrector of rotor displacement control is studied by the root locus method
應用復合矢量概念，對比了靜止坐標系和同步旋轉坐標系pi電流調節器組成電流閉環系統的穩態誤差，並用根軌跡法對轉子位移控制系統的校正環節進行了研究。By means of vector analysis, dymazttic model of sssc is deduced in dq orthogonal co - ordinate within synchronously rotating reference frame, and dynamic characteristics is invcstigatcd
採用矢量分析方法，推導了基於同步旋轉坐標系的sssc的動態數學模型，並在此基礎上研究了sssc控制潮流的動態特性。The flux terms in the governing equations was directly calculated in the inertial coordinate system without projection to the rotate one
通量項計算直接在慣性坐標系下進行，沒有投影到旋轉坐標系下，方便了計算。Space vector control according as ac induction motor two - axis theory speed separates the stator current into two components. one is the torque component ; the other is the flux component. a structure similar a dc machine structure where torque and field can be controlled independently is given
矢量變換控制是以交流電動機的雙軸理論為依據，在同步旋轉坐標系中把定子電流矢量分解為兩個分量：一個分量與轉子磁鏈矢量重合，稱為勵磁電流分量；另一個分量與轉子磁鏈矢量垂直，稱為轉矩電流分量。Taking core loss into account has important effect to improve the torque performance of the motors " field oriented control. in this paper, the transient mathematical model of the asynchronous motor with core loss is setup. the method is proposed that minimizes the loss in a variable speed and torque at the synchronous rotating coordinate
在對損耗分析的基礎上，建立了考慮鐵損時異步電機的動態數學模型，推導出在同步旋轉坐標系下變速、變轉矩時使電機功率損耗最小的方法，並且結合矢量變換提出了基於快速轉子磁場定向的矢量控制。Low frequency models and high frequency models are set up in abc coordinate, coordinate, and dq coordinate, respectively
分別在abc靜止坐標系、靜止坐標系和dq旋轉坐標系中建立了低頻和高頻數學模型。So the vsr can operate in any power factor. internal model control ( imc ) design concept has been introduced to the unbalanced control system of vsr. with imc design concept, the unbalanced control system not only achieve zero steady state error of sinusoidal ac current, but also obtains strong robustness of the control system
由於在abc和靜止坐標系中，採用比例和比例積分調節器無法實現對時變正弦波信號的無差跟蹤控制，而在dq坐標系中需要用正、反兩套旋轉坐標系構成四個電流內環才能實現對正、負序dq電流的無差跟蹤。For the practical application, three methods of realizing and improving chaotic synchronization have been researched, and the methods consist of controlling chaotic and hyperchaotic synchronization, impulsive synchronization, rotate coordinates transformation improving synchronization
本文從實際應用的需要出發，研究了三種實現和改進混沌同步的方法：控制混沌、超混沌同步法，脈沖同步法，旋轉坐標變換改進混沌、超混沌同步法。In this paper we discussed the evolution of two states system and geometric phase in a rotating magnetic field by using the method of coordinate transformation
本文用旋轉坐標繫系法對二能級系統的在旋轉磁場中的演化和幾何相進行了研究。In rotating frame of reference, the construction method of three dimensional finite volume tvd schemes is systemically analyzed, in which implicit euler defiference is applied for time discretization
在旋轉坐標系下，發展了一種含旋轉源項的雷諾平均navier - stokes方程的三維有限體積tvd格式，時間離散採用隱式euler方法。The paper analyzed the basic theory and mathematic model of three phase voltage pwm inverter and proposed one kind of control strategy based on the voltage - current double - loop. it used the exterior loop to control the voltage the eps outputted, and used the inner loop to control the current. simulation testified that the control method could improve the dynamic response character and interference rejection ability
在建立三相電壓型pwm逆變器在兩相同步旋轉坐標系下的數學模型的基礎上，提出了一種三相電壓型pwm逆變器基於電壓電流雙閉環的控制方法，利用電壓外環實現對輸出電壓的穩定控制，電流內環實現對輸出電流的控制，模擬證明該方法有效地改善了系統的動態響應及抗干擾能力。Aimed at rotating wheels of hydrodynamic torque converter, the basic formula that suited hydrodynamic torque converter was given out ; the model of type yj380 hydrodynamic torque converter was established and the finite element method was chosen, the model was taken into an appropriate boundary conditions in order to proceed the simulative calculation of the internal flow field in torque converter, at last the theoretic results were compared with the experimental results
摘要給出了適合於變矩器的旋轉坐標系下的基本方程組；建立了yj380型液力變矩器三維模型，選擇了有限元法作為其分析方法，給模型加以適當的邊界條件，對其內部流場進行三維動態模擬；將理論計算結果與實驗結果進行對比分析。Firstly, it presents the principle of vscf wind power, and compares the const - speed const - frequency ( cscf ) and vscf. also it builds the mathematic model of all section of vscf double - fed wind power generation system on two - phase synchronous rotation coordinate. secondly, the thesis gives the characteristic of torque and the steady - state analysis of vscf double - fed generator
文中介紹了變速恆頻風力發電的原理，比較了恆速恆頻和變速恆頻的區別，給出了雙饋型變速恆頻風力發電機在二相同步旋轉坐標系下的數學模型以及風力發電系統其它各部分的數學模型。Based on four different reference frames, namely absolute angle synchronized reference frame, relative angle synchronized reference frame, reference frame in which some machine is taken as reference machine, and inertia center reference frame, methods of forming linear space model of multi - machine systems are introduced
摘要介紹了多機電力系統在4種參考坐標系：絕對功角同步旋轉坐標系、相對功角同步旋轉坐標系、某一機組參考系和慣性中心參考系下的線性空間數學模型的形成方法。分享友人