程差方程 的英文怎麼說
中文拼音 [chéngchāfāngchéng]
程差方程
英文
eikonal equation-
Parallel algorithms of accelerative iteration for solving implicit difference equations
求解隱式差分方程的加速迭代并行演算法Comparing the theory calculation and the experimental testing date. firstly, analyzing the same law to interpret the conditions of the equations accusative describing the air dealt with process and advancing the improving measures. secondly, analyzing errors
對理論計算及試驗測定結果進行對比分析，一方面分析共有變化規律，以說明組合方程組較能準確描述實際處理過程的條件，從而驗證組合方程組的合理性程度；另一方面分析誤差產生原因，提出改進方法。Residual a posteriori error estimate two - grid methods for the steady navier - stokes equation with stream function form
方程流函數形式兩重網格演算法的殘量型后驗誤差估計After the simulation of sins, the actual sins is studied, especially studying the compensation of gyro ' s excursion. and it proves that the compensation can improve the navigation accuracy of sins. on the basis of the realization of sins, the integrated navigation of position / velocity for gps and sins are established, and sins and gps integrated navigation is realized by application
在實現sins的基礎上，研究了sins與gps的位置、速度組合導航，建立全球定位系統和捷聯慣導系統的誤差方程及位置速度測量方程，應用卡爾曼濾波技術實現了sins和gps的組合導航。The improvements in the iaga contained adding strengthen operator, improving evaluation index of premature, etc. multi - phase homing project, making use of the flight properties of parafoil system in gliding and turning, was simple in control and facile in practice. based on frenet frame, the linear time - variable error equations of parafoil system were built
基於frenet坐標系推導和建立了翼傘系統線性時不變的誤差方程，並運用「投影點」的思想來獲得frenet坐標系下偏差量的解析近似表達式，從而設計了用於翼傘系統航跡跟蹤的傳統pd控制器和增益調節型模糊pd控制器。Two types of alignment algorithms on moving base were put forward in this paper, one with angular velocity matching, and another with acceleration matching. the error models and measurement models in consideration of ship flexure and lever - effect were deduced respectively. the alignment methods were verified by simulation
提出了兩種動基座傳遞對準的方法，一種是採用角速率匹配，一種是採用加速度匹配，並分別推導了在考慮船體變形和桿臂效應時傳遞對推的誤差方程和量測方程，通過模擬驗證了這兩種傳遞對準方法的正確性。Abstract : the attitude error performance of electrostatic gyro should be understood and the relevant error equations must be set up in order to ensure the navigation precision of esgm. the relation between the navigation errors and the attitude errors of gyro was derived by use of spherical triangle. the simulation results show that the temporal performances of the longitudinal and distance errors which come from the initial alignment errors are periodically variational. they also show that the longitudinal and distance errors resulted from gyro drifts are not convergent in time. thus, the effects of initial alignment errors and gyro drifts can not be neglected and must be estimated and compensated
文摘:為了保證靜電監控器的導航定位精度，需要了解靜電陀螺的姿態誤差特性，建立相應的誤差方程.本文採用球面三角形原理推導了導航定位誤差與陀螺姿態誤差的關系式.模擬結果表明，由初始定向誤差引起的經度誤差和距離誤差的時間特性是周期變化的；由陀螺漂移引起的經度誤差和距離誤差是隨時間發散的.因此，初始定向誤差和陀螺漂移的影響不能忽略，必須對其進行估計和補償In this paper, the od error equations are proposed in detail
本文詳細推導了里程計的速度誤差方程。The paper presents the form of sins / odometer ( od ) / global position system ( gps ) integrated navigation system based on sins. state and observation equations are established for kalman filter. the simulation result shows that the integrated navigation system can reduce navigation error when using the feedback calibration method
對捷聯慣導系統、里程儀（ od ）和全球定位系統（ gps ）誤差方程進行了分析，建立了以捷聯慣導系統為主的用於卡爾曼濾波的系統方程和觀測方程，給出了車載組合導航系統的分散式濾波組合方案。This paper employs differentiation transformation and the method of differentiating completely homogeneous coordinate transformation to set up errors equations group, the discussion of the errors of double - triangle pkm is conducted
本論文應用微分變換和齊次坐標變換的全微分建立誤差方程組，討論了雙三角形並聯機構的位姿誤差分佈。Depending on the error analysis of the strap - down inertial navigation system, the error equation of this system is given
在分析捷聯系統誤差的基礎上，給出了系統的誤差方程。At the same time, we use kalman filter error equations in errors analysis for autonomous navigation algorithm, and compare the analysis results of the two methods
同時利用卡爾曼濾波誤差方程對自主導航演算法進行誤差分析，並將兩種分析結果作比較。Initial alignment is to put on some speed of control angel in order to transferring the maths platform to expected location. it can be controlled by error equation. in the platform system, it used to adopt the modern control theory method
初始對準從控制上講就是施加一定的控制角速度把數學平臺轉向期望的位置（與地理坐標系重合） ，它是按誤差方程進行控制的，過去在平臺系統中採用頻率特性方法，目前已經採用了現代控制理論設計方法。On the basis of kinematics analysis and model transformation, an error equation of the robot kinematics parameter is established with numerical optimization, and the optimal design for kinematics parameter is realized, which effectively increases the repositioning precision of the robot
在運動學分析和模型變換的基礎上，運用數值優化技術建立了機器人運動學參數的誤差方程，實現了運動學參數的優化設計，有效提高了機器人的重復定位精度。The noise estimation theory of the gps / ins integrated navigation system and the error analysis is are systematically discussed in this dissertation. at first the paper briefly introduce the error of the integrated system and the cause of the error, and give an estimation model of the error. in order to solve the precise estimation of the error using artificial neural network, then an artificial neural network model is discussed
本論文首先介紹了gps慣性組合導航系統的誤差和誤差模型，綜述了gps和慣導系統的誤差和誤差來源，給出了這兩種導航系統的誤差方程，討論了導航系統中常用的數據處理方法?卡爾曼濾波，給出卡爾曼濾波的基本方程，深入研究了卡爾曼濾波在組合導航系統數據融合中的應用。This paper stated the application of parallel link mechanism in modern machine tools, set up the error analysis as to parallel link mechanism in the virtucal - axis machine tool, derived the double triangular error equations of parallel link mechanicsm in its horizontal posture, analyzed the linearity and non - singularity of the error equations, thus giving the normal splution to the horizontal posture error. the error distribution law is simulated as to the center line in the workplace, and the error distribution curves are drawn as well
該文對並聯機構在現代機床上的應用作了論述，建立了虛擬軸機床並聯機構的一種誤差分析方法，應用坐標變換原理導出了雙三角並聯機構水平姿態時的誤差方程組；分析了誤差方程組的線性和非奇異性，給出了水平姿態時的位姿誤差正解；對工作空間中心線的誤差分佈規律進行了模擬，繪制了其誤差分佈曲線。Because the ins error equation is unstable, some initial states error will cause error floating and error accumulating, if the filter observations were only position error, kalman filter will converge very slowly, and some states error ( such as yaw error ) will be great. since the milemeter altimeter and piloting could only output position information, this paper put forward a method, firstly estimateing states and then kalman filtering, to improve filtering effect. simulation proved that this method could effectively reduce the system states error, quicken filtering convergence and improve filtering precision
由於慣導系統（ lsins ）的誤差方程是發散的，某些初始狀態的誤差會引起誤差的漂移和積累，當觀測量只有位置誤差時，卡爾曼濾波的收斂速度很慢，某些狀態（如方位角）誤差很大，而以上除慣導外的其它導航傳感器直接提供的只是位置信息，為了改善濾波器性能，本文根據里程計等傳感器的特點，提出了首先對狀態做出估計，然後在狀態估計的基礎上，進行卡爾曼濾波的方法。This paper studied zero - velocity correct technology for ins, based on analysis of ins error equation, it concluded the method by which we can use ins velocity output to estimate the attitude angle error when the vehicle halted, then it contrasted two schemes of conic approximation of attitude angle error and put forward a method to decide the approximation coefficient by time range
本文首先研究了車載捷聯慣導系統（ ins ）的零速修正技術，在分析捷聯慣導系統誤差方程特點的基礎上，推導了停車時利用ins速度輸出估計姿態誤差角的方法，並對用二次曲線擬合姿態誤差角的兩種方案作了比較，提出了按時間分段確定擬合系數的方法。The moment equations are developed which provide the mean, variance and skewness of carbon dioxide concentartion
最後所推導出之動差方程式更可推算出二氧化碳濃度之平均，變異數及偏態系數值。Study on strapdown inertial navigation system ( sins ) the concept, process and the already done work of initial alignment of sins arc introduced briefly. for selecting coordinate and deriving the error model, presenting some kinds of coordinate in the inertial navigation system ( ins ) ; the initial alignment of sins theory is introduced in detail ; the linear error model of moving base initial alignment of sins is derived, including analysis in characteristic and influence of system error of inertial apparatus.
捷聯慣導系統的研究：首先概要介紹了慣導系統的相關知識，闡述了捷聯慣導系統的優點；分析了初始對準姿態確定的幾種坐標系，為建模定義了坐標系選擇和姿態矩陣；詳細研究了捷聯慣導系統的初始對準原理，推導並給出了捷聯慣導系統動基座初始對準的誤差方程，並分析了誤差特性以及慣性儀表誤差對系統誤差的影響；分享友人