偏轉象差 的英文怎麼說
中文拼音 [piānzhuǎnxiàngchā]
偏轉象差
英文
deflection aberration-
The stability of electric power system has been being focused for a long time toprevent a power system from losing synchronism after sudden fault ， researchers have done much work and got many accomplishments this paper applied the direct feedback linearization ( dfl ) technique on the power system ， a strong nonlinear system simulation results by matlab proved this method efficiency main works and results are as follows ： this paper compared some existing methods in excitation control ， fast valve control and coordinated control respectively, analyzed the developments and actuality of nonlinear control research in brief, illustrated why ransient stability could be greatly improved by using the fast valve control in chapter 3 ， indicated the importance of coordinated control farther this paper introduced the inverse system theory, based on which ， discussed the dfl theory, pointed out which had consistency with the inverse theory, expanded the dfl theory combined the idiographic model equations ， made which adapt to the model of a single machine - infinite bus power system this paper referenced abundance articles and educed a set of equations ， which could describe the dynamical process of excitation and fast valve control for synchronous generators in the equations ， there were several very important parameters of power system - - rotor angle ( ) ， rotor speed ( ) ， generator q axis voltage ( eq ) ， transient voltage ( e ' q ) ， active power ( pe ) ， mechanical input power ( pm ) ， valve opening ( ) ， generator terminal voltage ( vt ) ， based on the model ， nonlinear coordinated controller and terminal voltage optimal controller have been designed by using the expanded dfl theory and lq optimal control theory the simulation results showed that the controller could keep power system transiently stable under the effects of a symmetrical 3 - phase short circuit fault ， which achieved better postfault regulation compared with another two routine methods ， one is the proportion excitation controller and proportion fast valve controller, the other is the proportion excitation controller and the optimal fast valve controller, which could exert good performance when met 1ittle disturbance either
在介紹逆系統理論的基礎上，詳細介紹了dfl理論，通過比較闡明了dfl理論其本質是逆系統方法的一類，並結合具體課題推導出的模型方程將dfl理論進行了擴展，使之適應于電力系統這個強非線性對象。通過參考大量的書籍文獻推導出一套實用的可將大型汽輪發電機勵磁與汽門綜合起來進行控制的模型方程，此模型方程涵蓋了電力系統中特別引人注目的幾個量- -轉子角、轉子轉速、發電機q軸電勢eq 、暫態電勢e ' q 、有功功率pe 、機械功率pm 、汽門開度、機端電壓vt ，在此基礎上建立了實用的電力系統簡化的數學模型，並將擴展的dfl理論應用於此模型系統，結合線性二次型最優控制理論設計出大型汽輪發電機的非線性綜合控制器及機端電壓最優控制器，通過模擬實驗與採用常規的按電壓偏差進行調節的比例式勵磁控制器+汽門比例控制及採用常規的按電壓偏差進行調節的比例式勵磁調節器和基於二次型性能指標設計的最優快控汽門（考慮發電機的飽和因素）進行了對比，證實了採用此種控制器可以有效地提高電力系統的暫態穩定性，並且在電力系統遭受小干擾時同樣具有良好的調節性能。Thesis aim at green deviation understanding of architecture in this kind, and through nowadays getting green creation works of architecture classify and melt, from the green architectural design correlating with region culture, with relevant symbolizing doctrine design naturally, and aesthstic language getting green architecture creates the theory respect to environment, exploration of translation of technology, explain green architecture on technological aspect art and human feeling
論文針對這種對綠色建築的偏差認識，同時通過對當今綠色建築的創作作品分類化研究，從與地域文化相關的綠色建築設計、與自然相關的象徵主義的設計、以及美學語言對環境、技術的轉譯的探索等綠色建築創作理念方面，闡述綠色建築基於技術層面之上的藝術化、人情化探索。First, educating the students " sense of language to improve their comprehension to language literalness, develop their cognitive ability, and combine the abstract thought with the visual thought, thereby to educate their thinking ability. second, according to the actual circumstance of the vocational senior high school students, to practice training of level of thinking from low to high : to learn - to think, to ask - to judge, and availably educate the thought ability of students, and expand the thought profundity ; third, reverse the deviation that appears in students " study motivation and interest. in the actual teaching work, stress the practicability and pertinency of teaching, and the visualize and gusto, regular their study motivation, stir up the interest of their study, then attain to develop the purpose of the thought
首先，要培養學生的語感能力，以提高職高學生對語言文字的理解能力，發展他們的認知能力，使抽象思維與形象思維結合起來，從而培養發展學生的思維力；其次，根據職高學生的實際情況，有步驟地實行由低到高的思維層次訓練：學-思、問-辨，這樣可以有效地培養學生的思維能力，開拓思維深度；再次，盡力扭轉學生學習動機、學習興趣出現的偏差，在實際教學工作中，講求實用性與針對性，講求教學的形象性與趣味性，端正職高學生的學習動機，激發他們的學習興趣，以達到發展思維的目的。Taking no account of the non - uniformity of the detector, this paper analyzed the performance of the traditional four - quadrant angle - measurement algorithm and two other algorithms in calculating the pitch angle and the deflection angle of the incident ray, and also compared the error curve of the pitch angle calculated by each algorithm in the full plane
摘要在不考慮探測器非均勻性影響的情況下，本文分析了傳統四象限測角演算法和另外幾種演算法在計算入射光的俯仰角和偏轉角時的性能，還比較了在整個平面內各個演算法得到的俯仰角的誤差曲面。On the basis of previous work, we developed a new data processing system by use of dsp & oop. the new system overcame the problems existed in the old data processing system successfully, such as the bug which cause program dead loop when the data is too long, and the frequency leak due to principle limit of fft filter. in addition, we eliminated the measurement error brought on by phase warp
我們在前人的工作基礎上，利用現代數字信號處理技術和面向對象的軟體開發技術，統一了彈上黑匣子數據處理系統的操作平臺，完善了轉速、掃描角測試數據處理系統，修正了原有處理程序中的因數據長度過長而導致程序死鎖的bug ；利用有限沖擊響應（ fir ）濾波器，在濾去噪聲的同時，有效地解決了矩形窗fft濾波的頻譜泄漏問題；另外還解決了因相位偏差而導致的測試誤差。分享友人