相加誤差 的英文怎麼說
中文拼音 [xiāngjiāwùchā]
相加誤差
英文
additive error-
Superficially it is quite safe to phase advance an accelerometer signal as the error signal has been filtered by the servo and the alrframe transfer function.
從表面上看，因為誤差信號已被伺服機構和彈體傳遞函數濾波，所以讓加速度計信號經相位超前網路是不會有問題的。Its biquadratic finite element approximation is considered and under the appropriately graded meshes, quasi - optimal order error estimates in the - weighted h ^ 1 - norm, up to a logarithmic factor in the singular perturbation parameter, are proved
然後，考慮此方程在分層網格剖分上的雙二次有限元逼近，在-加權h ^ 1 -模意義下得到了至多相差一個關于攝動參數對數因子的擬最優階收斂的誤差估計。Testing on rock sample data in dispersed shaly sands it shows that adding another parameter ( n ) to the model can decrease the relative error of fitted co. however, when we consider the difference of electrical properties between clay - bound water and formation water in the model, although another parameter ( qv ) is added to the model, the relative error of fitted co is increased slightly
通過一組分散泥質砂巖巖樣實驗測量數據的計算。表明模型中增加參數n （ m n ）可以使擬合的c _ t的相對誤差減小，但在考慮粘土結合水與地層水導電性差別時，模型中雖多加一個參數q _ v ，卻沒有減小擬合的c _ t的相對誤差。The multi - pass amplifier was being adopted proverbially, which could improve the output energy consumedly. but on the other hand the beam quality was degraded by the severe wave - front ' s aberration that exacerbated by multi - passing the beam through the amplifier
多程放大系統因能夠較大提高系統的輸出能力，故得到較為廣泛的應用；但由於多程放大級各類波前誤差的相干疊加，使系統輸出激光的波前發生比較嚴重的畸變，導致光束質量的下降。Abstract : a detailed analysis is made of the errors made by the system trace, of the mutual relation between trace error and contour error and of the effect on accuracy produced by contour machining, and some computation formulas have been worked out
文摘:從進給伺服系統動態響應、滯后特性角度，較詳細地分析了跟隨誤差產生的原因，跟隨誤差與輪廊誤差之間的相互關系和對輪廊加工產生的精度影響，並給出了具體的計算公式。The software has realized the techniques presented before and has other functions, such as the simulation of a disk under diametral compression, various error analysis, phase unwrapping, real - time display of image information, and so on
附加功能還有對徑壓縮圓盤理論模擬模擬、各種誤差分析、相位去包裹和圖像信息實時顯示等，它為今後進一步開發奠定基礎。Two practical applications prove their efficiency. 3. using knowledge of adjustment with additional systematic parameters, based on an analysis of the sources of errors in airborne gravity measurements, an error model is studied to constructed mathematically which can characterize the change of systematic errors and with which three kinds of new crossover adjustment models are presented
3 、根據附加系統參數平差的理論，在分析、總結航空重力測量的主要誤差源基礎上，研究建立了反映航空重力測量系統誤差變化規律的誤差模型，並根據三種不同的情況建立了相應的測線網平差模型。With the increasingly extensive application of the planar enveloping hourglass worm gearing, it becomes more important to rapid detection and high precision of the manufacture error. the surface of the planar enveloping worm gearing is complicate, and current domestic and international examination concerning its form generally is recur to the general three dimension measure apparatus or the special measure apparatus according to " the type of assemble " principle designed
由於平麵包絡環面蝸桿齒面比較復雜，其齒形、齒距、齒厚各不相等，因而關於它的製造誤差檢測也比較復雜。目前國內外關于其形面的檢測一般是藉助于通用三坐標測量機或按「裝配式」檢測原理（即測量狀態與加工狀態一致的原理）設計專用量儀進行的，一直沒有十分成熟的專門產品問世。In order to make the sensitivity of 2 - demension accelerometer along the two main arbors almost identical, symmetric four - beam structure that embeds a double - sides interdigitated differential capacitive with puckered beam in two directions was used as sensitive component. in addition, the differential capacitive accelerometer fabricated by bulky silicon micromechanical technique has high sensitivity, wide measurement scope, less nonlinear error, and simple converting circuit. then, the structure parameters of the sensitive component were calculated and stimulated, which results in a set of the optimized structure design parameters, main fabrication procedure and several key fabrication technology
為使二維振動傳感器在兩主軸方向的靈敏度大致相同，敏感元件採用高度對稱的四梁結構，其中每個軸向上均採用帶折疊梁的雙側叉指電容結構，採用體硅微機械工藝製作的高深寬比叉指電容式敏感元件，具有高靈敏度、寬量程、非線性誤差小、外圍電路簡單等優點;對設計的敏感元件結構參數進行了計算，並利用有限元法進行了模擬分析，根據模擬結果得出了優化參數;在確定敏感結構的基礎上，研究了敏感元件採用體硅微機械加工工藝製作的工藝流程和關鍵工藝技術;對敏感晶元內部的c - v介面電路進行了原理設計與分析，利用差動測量技術得到由振動引起的微小電容變化量，經c - v介面電路進行相位調制處理，然後通過解調輸出與加速度成正比的電壓信號。The kitchen here did not get eyesight errors, he believed his scoop in his hand absolutely, did not give me a little bit more porridge
這兒的炊事員似乎沒有視覺誤差，他絕對相信自己手中的勺子，沒有給我多加一點。The problem with adding the individual errors is the canceling effect of the positive and negative values.
把各個誤差直接相加的結果是，正值和負值相互抵消了。Finally, it takes a detailed test to the processed millimeter 4 - bit digital phase shifter. the test result is better than expectant guideline : the maximum of the phase error is 10, the insertion loss is better than 10. 74db, the return loss is more than - 14. 88db in the 33. 9ghz 34. 5ghz frequency band. the whole volume of the phase shifter is 80mm 35mm 20mm
最後，對加工出的毫米波四位數字移相器進行了測試，測試結果完全達到了預定指標要求:在所要求的33 . 9ghz 34 . 5ghz頻帶內，最大相移誤差小於10 ，插入損耗小於10 . 74db ，輸入輸出回波損耗大於- 14 . 88db ，整個電路尺寸為80mm 35mm 20mm 。To correct these effects, two methods were introduced in this paper : using weighted function to constrain second phase error caused by dispersion, and utilizing pga algorithm to reduce the phase perturbation due to the irregularities of the ionosphere
本論文介紹了兩種校正方法：利用加權函數抑制色散效應引起的二次相位誤差，以及使用相位梯度自聚焦演算法較正由電離層的不規則性引起的信號相位起伏。Based on current data of energy consuming quantum about rolling reheat furnace, its combined forecasting model was established by using conceptions such as the relative error, the tendency of the forecasted object and gray basic weight due to the method of fuzzy variable weight
摘要基於已有的軋鋼加熱爐的能耗數據，引入了各預測方法的預測相對誤差、預測對象的變化趨勢和灰色基本權重等概念，建立了軋鋼加熱爐的能耗模糊變權重組合預測模型。Thirdly, a modified extended chirp scaling ( ecs ) algorithm is presented, which solves the problem of producding fine focused images in the class of chirp scaling ( cs ) algorithm. lt can be used for uwb - sar imaging effectively. the phas e error produced by cs operation are analyzed. a windowed process in two dimension frequency domain before cs operation are proposed. it can improve the quality of image and widen the effectively swath and increase the peak to sidelobe ratio ( pslr )
然後針對chirpscaling （ cs ）類演算法不能對參考點精確聚焦的問題，提出了一種改進的擴展cs （ ecs ）演算法，實現了對uwb - sar的高效成像；分析了cs操作產生的相位誤差，提出在cs操作之前在二維頻率域對信號加窗，除有效提高信號的峰值旁瓣比（ pslr ）外，還可以提高圖像質量，增加有效測繪帶寬度。In the bistatic sar system there are several technical problems, which affect the radar imaging, such as complicated geometrical and signal models, phase errors caused by motion errors and attitude errors, and motion compensation etc. this dissertation gives empathies on these technical problems analysis. 1
但是，收發分置的特點同時也帶來了新的技術問題:如空間幾何布局靈活多樣;回波形式更加復雜;由更為復雜的運動誤差和姿態誤差引起的相位誤差問題;以及相關的運動補償問題等。The loaded - line - type, switched - line - type and reflection - type phase shifters are studied in this thesis. considering the defect of loaded - line phase shifter, a new type of switched - line with loaded - line phase shifter is proposed in this thesis. this design not only make advantageous debugging of circuit, but also minimize phase - error in a given frequency band
本文對加載線型、開關線型和反射型移相器進行了分析研究，並針對開關線型移相器的缺陷，提出了一種加載式的開關線型移相器設計方法，不但便於對電路進行調試，也減小了一定帶寬內的相位誤差。Since phase gradient autofocusing ( pga ) often produces unsatisfactory results when operating upon scenes that are dominated by distributed targets, a modified weighting average phase errors estimation method is proposed
針對相鄰強目標導致的相位梯度自聚焦演算法（ pga ）收斂速度下降，提出了一種加權平均相位誤差估計方法。Besides, it ’ s also very convenient to add many kinds of phase errors required by the phase error compensation and sar image processing research farther. for imaging algorithms, range - doppler algorithm is extended to broadside stripmap airborne bistatic sar successfully
另外，在我們方法的流程中可以方便地加入載機運動參數誤差、天線波束指向誤差及頻率源的穩定性等各種相位誤差，也為今後進一步研究相位誤差補償及圖像處理等技術打下了良好的基礎。First, the article simply presents the current status and development of mold cad / cam technology, then on the basis, choose ug of pc version as a platform, as per customer ' s 2d drawings, set up a 3d model of tire molds and generate nc programs for manufacturing, finally, analyze the manufacturing errors. all above work meet the requirement of the production
課題首先對模具cad cam技術的現狀與發展進行了簡要綜述，在此基礎上選擇了微機unigraphics （簡稱ug ）系統作為支撐環境，根據客戶提供的輪胎設計的二維圖樣，實現了輪胎模具基模的三維造型和數控加工，並進行了相關誤差分析，滿足了生產要求。分享友人