拓撲誤差 的英文怎麼說
中文拼音 [tàpūwùchā]
拓撲誤差
英文
topological errors-
With this method, developable surfaces and non - developable surfaces can be developed in a unique way. the developable surfaces can be developed submitted to certain error, and the non - developable surfaces developed homo - topologically
對于可展曲面,利用該演算法可以得到在一定誤差范圍內的展開結果;對于不可展曲面,則可得到與原曲面拓撲等價的展開網格。Three amendments are made to neighbor - joining method : first, a more precise evolution model is used to calculate the distance between sequences ; second, sequences are used to generate multiple typological structures, and hence compensate the shortcoming of neighbor - joining method, which can generate only one typological structure ; third, back mechanism is introduces to avoid the negative branch length in distance method and get a more accurate tree
本文對距離法中的鄰接法進行了三點改進: 1 .使用更精確的進化模型來度量序列之間的距離,降低因模型而帶來的誤差; 2 .通過隊列產生多個拓撲結構,解決了鄰接法只能產生一個拓撲結構的缺陷; 3 .引入回退機制,消除了距離法中負枝長的產生,得到的樹更準確。Difference surface in combination with the least square method is employed for the evaluation of topographic deviation for sbg
將差曲面和最小二乘法相結合進行螺旋錐齒輪拓撲誤差評定。Geometrical and physical meanings of difference surface are presented, and the parameters of tooth surface topographic deviations are derived. in addition, the complete mathematical formulae of the 0th, the 1st, 2nd order form deviations is proposed, and diagnostic parameters of each order form deviation is gotten by the least square method, which lead to evaluate the tooth surface topographic deviation quantificationally
系統地給出了差曲面的幾何意義和物理意義,提取了齒面拓撲誤差參數;給出了零階誤差、一階誤差、二階誤差的完整數學公式,並且用最小二乘法得到了各階誤差的特徵參數值,實現了對齒面拓撲誤差的定量評定。Based on the conception of gear global deviations, starting with the related factors influencing sbg ’ s deviations, the paper has explored the quantitative evaluation of topographic deviation for sbg by means of mathematical method in combination with measurement principle, and has developed the software of sbg ’ s deviation evaluation
基於齒輪整體誤差概念,從影響螺旋錐齒輪誤差形成的相關因素出發,利用數學方法結合測量原理,本文對螺旋錐齒輪齒面拓撲誤差的定量評定進行了探索,開發了螺旋錐齒輪誤差評定軟體。The two key factors, machining methods and machine - setting parameters of sbg, which are related with the generation of theoretical tooth surface and topographic deviation for sbg, are analyzed in details. after building the machine - tool mathematical model and computing the tooth surface parameters, using the given conditions and mesh equation, the coordinates of the theoretical tooth surface of sbg can be computed, and, then, the theoretical tooth surface model of sbg is derived
本文詳細地分析了形成螺旋錐齒輪理論齒面及產生拓撲誤差的兩個關鍵因素,即螺旋錐齒輪的切齒加工方法和機床調整參數;通過建立機床數學模型,計算齒面參數,用已知條件和嚙合方程進行聯合求解,得出了理論齒面的坐標值,從而獲得了螺旋錐齒輪的理論齒面模型。The first generation spatial analysis database system, sadbs, uses " realms " as expression base of spatial data. it adopts discrete integer coordinate system to solve topological error in spatial database. it also uses multi - index data organization and plane - sweep algorithm, which improve the performance of spatial analysis operations
第一代空間分析數據庫系統sadbs使用realms作為空間數據的表示基礎,它利用離散化的整數坐標系統,解決了空間數據庫的拓撲誤差問題;使用多索引的數據組織方法,引入平面掃描演算法,提高了空間分析操作的性能。The latter primarily improves the transmission distance and reliability by selecting the repeater automatically. the frequency domain auto - adaptatation filter algorithm is deduced and reliabity by selecting the repeater automatically. the frequency domain auto - adaptaion filter algorithm is deduced and a method of frequency domain algorithm to restrain the marrow band interference is given on the foundation of the time domain minimum mean square error auto - adaptation filter. then the meter reading system to can learn the power network structure and automatically create linked path by using neural networks auto - study ability and analyzing the reading data
後者主要是對中繼節點的自動選擇,以提高信息的傳輸距離與可靠性。針對電力線擴頻通信通道的特點,在時域最小均方誤差自適應濾波演算法的基礎上,推導了頻域自適應濾波演算法,並提出了頻域演算法抑制窄帶干擾的具體方法。運用神經網路的自學習方法,通過對抄讀數據進行分析,使抄表系統感知電網拓撲結構,自動建立中繼路徑。In this paper the topological structure of multi - body system and their low - order body arrays, and basic concepts of characteristic matrixes and their composing methods are presented, basic rules of having - error kinematics of multi - body system are analyzed, 891e gear measurement center taken as an example, volumetric geometirc errors of gear measurement center based on characteristic matrixes are researched, it provides a kind of ideal method of model building for the precision analysis and geometric errors of gear measurement center
摘要本文闡述了多體系統的拓撲結構和低序體陣列,其特徵矩陣的基本概念和構建方法,分析了多體系統誤差運動的基本規律,結合891e型齒輪測量中心研究了根據特徵矩陣得到其空間幾何誤差的演算法,為齒輪測量中心精度分析和幾何誤差提供了一種理想的建模方法。The concept of relative movement and the describing method of relative movement rate of dynamic measurement system are shown. a dynamic error neural network topology structure corresponding to the established system is designed. a cognizing matrix of error source and the transfer, classifying model of dynamic error source are put forward
敘述了動態測量誤差的構成要素和表徵,給出了動態測量系統的「相對運動」概念和相對變化率描述方法,設計了與所建模型相對應的動態誤差神經網路拓撲結構,提出了誤差源認知度矩陣和動態誤差源傳遞、分類模型。To get the much more quality and rate of image compression, we bring forward another new three layers back propagation networks and it ' s arithmetic
基於此我們提出了新型二層誤差逆傳播網路拓撲結構和演算法,為進一步提高圖像壓縮的壓縮比和壓縮質量,我們提出了新型三層誤差逆傳播網路拓撲結構和演算法。分享友人