扇型原理 的英文怎麼說
中文拼音 [shānxíngyuánlǐ]
扇型原理
英文
fan principle-
Based on the results of the study about the geological background in this area, this paper has discussed about the sedimentation facies marks for the fan delta in baimiao gas field, worked out a detailed proposal about the development of physical simulation experiment about the fan delta, and described in detail the general laws and major controlling factors governing the sedimentation processes of the fan delta. a detailed measurement was made about the experimental results, and a systematic comparison was made relative to the prototypic characteristics. based on the observation and description about the experimental processes and the analyses about the experimental results, this paper has given detailed
在地質背景研究的基礎上，對白廟氣田扇三角洲沉積相標志進行了論述，在此基礎上，制定了開展扇三角洲物理模擬實驗的詳細方案，詳細描述了扇三角洲沉積過程的一般規律及主要控制因素；對實驗結果進行詳細的測量，並與原型特徵進行了系統的對比，根據實驗過程觀察描述和實驗結果分析，詳細劃分了白廟氣田扇三角洲的巖石相類型及沉積微相；分22個砂層組完成了沉積微相尤其是扇三角洲上辮狀河道展布規律的研究，分不同時期指出了22個砂層組砂體分佈規律，為儲層預測及該地區滾動勘探奠定了基礎，這是本論文的重點內容之一。Firstly, this paper introduces the asynchronous motor model, and compares it with the dc motor ’ s. then the paper studies the principle of vector control, and proposes an improved current model of rotor flux observer. this paper also studies the three - level inverter ’ s topology, working principle, the neutral - potential unbalance mechanism and its controlling strategy. the paper especially studies the svpwm in details. the interface between the vector control and the three - level inverter is studied in details, including the generation of reference voltage vector, its judging of the sector and triangular regions, and the working mechanism after it sent into three - level inverter. when synthesizing the reference voltage vector, select the vector which only includes p and o states as the starting vector, thus eliminate the vector shift problem when sector changes. this paper fully takes advantages of the powerful functions of matlab / simulink to set up the simulation model. this construction is very explicit. the simulation results verify the inverter voltage output is correct, the rotor flux is steady, the asynchronous motor ’ s dynamic and steady state performances and speed modulation are excellent
本文首先介紹了異步電機的數學模型，在此基礎上將異步電機的數學模型與直流電機的數學模型進行了比較;然後介紹了矢量控制的基本原理，採用了一種改進的轉子磁鏈電流型觀測模型;對三電平逆變器的電路拓撲、工作原理、中點電位不平衡的機理及控制方法進行了介紹，詳細分析了空間矢量脈寬調制策略。本文對異步電機的矢量控制與三電平逆變器之間的介面進行了詳細的研究，包括:參考電壓矢量的形成、所落扇區與具體小三角形區域的判斷、送入逆變器之後的工作機理。在參考電壓矢量的合成時，選擇只包含p 、 o狀態的空間電壓矢量作為起始矢量，解決了扇區切換時的矢量突變問題。On the base of the related research achievement, the structure and characteristics of annular fan beam sensor, principle of light scanning, image reconstruction, image explanation and system frequency domain analysis are thoroughly researched. there will be a helpful exploration for developing and utilizing the novel optical measurement technique
在國內外相關研究進展的基礎上，對環形扇束光學傳感結構及特性、光線掃描原理、圖像重建、圖像解釋和系統綜合分析等方面進行了深入的研究，為進一步開發利用該項新型光測技術進行了有益的探索。Based on the introduction of the systematic structure and working principle of pet, the thesis mainly described the realization of the partial function in the mechanical and electrical control system. furthermore, the thesis referred the design of a new circuit of fan - out of high frequency clock
本文在介紹正電子發射斷層掃描儀系統結構及工作原理的基礎上，著重對該儀器機電控制系統的部分功能實現作了詳盡描述，並且介紹了一種新型的高頻時鐘扇出電路的設計。分享友人