助推器性能 的英文怎麼說

中文拼音 [zhùtuīqìxìngnéng]
助推器性能 英文
booster characteristics
  • 助 : 動詞（幫助; 協助） help; assist; aid; support
  • 推 : 動詞1 （向外用力使物體移動） push; shove 2 （磨或碾） turn a mill or grindstone; grind 3 （剪或削...
  • 器 : 名詞1. （器具） implement; utensil; ware 2. （器官） organ 3. （度量; 才能） capacity; talent 4. （姓氏） a surname
  • 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
  • 能 : 能名詞（姓氏） a surname
  1. This paper introduces the fundamental and characteristic of the fuel cell, analyzes the necessity and detail scheme of adding assistant energy sources to the fuel cell power generation system. considering for the special demand of the fuel cell power generation system, this paper gives out a push pull forward converter ( ppfc ) with passive and lossless dual cdd snubber circuit

    本文首先闡述了燃料電池的基本原理和性能特點，分析了在燃料電池發電系統中引入輔助能源系統的必要性及具體的配置方案，然後針對燃料電池發電系統對dc / dc變換器設計的特殊要求，提出了一種加雙cdd無源無損緩沖電路的推挽正激變換器（ pushpullforwardconverter ， ppfc ） 。
  2. In this paper, the main research works are as follows : 1 ) survey and analysis previous work in auv navigation and summarize : as the cumulate error, the dead - reckoning and inertial navigation systems ca n ' t be used without other modified system ; the acoustic navigation system is used only in small range, and is very expensive. 2 ) two important approaches in geophysical navigation techniques are summarized, one is terrain contour based navigation, this approach is investigated keystone today ; the other is image based navigation, due to no perfect image sensors and image seabed map, this approach has seldom been practised. 3 ) two important terrain contour based navigation algorithms has been applied to auv, one is match algorithm - based terrain contour match ( tercom ) ; the other is kalman filter - based sandia inertia terrain - aided navigation ( sitan )

    主要研究內容包括：一、總結分析了當前水下導航的常用方法和不足之處，指出基於航位推算的導航方法，存在著最大的問題就是導航誤差的積累問題，如果沒有修正系統，這種方法很難滿足使用要求；其次指出基於聲學的導航方法，造價昂貴，導航范圍有限，難以滿足自主水下航行器大范圍導航的需求；二、總結了當前水下地形輔助導航的主要技術路線，一是基於地形高程的匹配方法，這是當前研究的重點；二是基於地形圖像的匹配方法，由於缺乏良好的圖像傳感器，和可用的海底圖像地圖，目前這種方法還有待研究發展；三、將兩種地形高程匹配的常用方法應用到自主水下航行器上：以相關演算法為前提的地形輪廓匹配（ tercom ）方法和以卡爾曼濾波為基礎的桑迪亞慣性地形輔助導航（ sitan ）方法，前者演算法簡單可靠，但是導航精度不高，後者雖然精度比較高，但存在著演算法較為復雜、有可能發散和出現奇異值等問題。
  3. Combining with knowledge representation and automatic reasoning principle of ai and generic paradigm, the system has these main functions : ? it is able to show different solutions of typical example ; ( 2 ) it can automatically generate problems similar to the example for students to solve by providing them with clues ; ( 3 ) these problems can be studied by demonstrating the complete solution process and answers with the help of automated reasoning, or by providing real - time prompts to students concurrent with the students " solution processes with the help of automated reasoning ; ? it provides exercises and is able to call a program produced by the group ( the translator ), which transfers apla programs to executable programs so as to verify its correctness ; ( 5 ) it let teacher to add examples in the database ; etc. hi the course of systematic research, we deeply investigated the relevant knowledge of the system and made some innovation : about teaching content, we select par method as the main content

    本系統選用薛錦雲教授的par方法為主要教學內容，應用人工智慧的知識表示和自動推理原理及泛型思想，使得系統具有以下核心功能：展示幾種典型例題的解；以泛型思想為指導，實現了無限題庫，可以自動生成與典型例題類似的問題給學生求解並給予提示；對于這些題目，計算機可以自動推理出由問題到程序的全過程供學生學習；也可通過自動推理根據用戶的實際做題情況實時給出提示，互動式地幫助學生學習演算法程序設計；學生可以從問題庫中獲得練習，並調用轉換器，將自己的apla程序轉化為可執行語言程序，運行以檢驗其正確性；對教師而言，可以對已有的實例庫、問題庫進行添加操作等。在系統的研製過程中，我們深入研究了系統的各方面相關知識，並進行了多方面的創新：在教學內容方面，首次選用par方法為主要內容。
  4. The former part, with the analysis and research of the meaning and the extension and the characters of industrial design, demonstrates the possibility and inevitability of applying computer and internet to aid industrial design and illustrates the state - of - the - art and usual technology. by analyzing the new development and new requests of caid ( computer - aided industrial design ) technology, the article raises the possibility and inevitability of developing internet - based icaid ( intelligent caid ) system, presuming the models and methods and illustrating the key technology of building iicaid, which includes extracting the knowledge of design and the knowledge of user and building the correlative model and studying and developing internet - based cooperative work of form design and the design and realization of software and hardware of iicaid system. finally with analyzing and summing up the correlative knowledge of design and the knowledge of user in nc machine tools form des ign and concluding and researching the results of the correlative experiments, the article raises and explains the researching points and key technology

    論文分為上下篇，上篇通過對工業設計內涵、外延的分析和研究，提出了運用計算機、網際網路等智能機器、信息技術輔助工業設計的可能性和必然性以及目前的發展狀況和一般技術；分析了目前caid技術的新發展和新要求，提出了發展基於網路的智能化caid系統的可能性與必然性，並大膽推測了實現的方法和模型；歸納建立iicaid系統所需的關鍵技術，即工業設計的領域知識和用戶知識的提取及建立模型；網路協同造型設計的規劃、集成和優化；系統的軟硬體設計和完成；最後，通過對數控機床造型設計相關領域知識的分析和整理，以及相關的實驗的總結和研究，提出和解釋了在數控機床造型設計中運用iicaid技術的研究重點和關鍵技術。
  5. As we have introduced a multilevel decision method with discriminator detection to improve the error rate performance, the deducing and analyzing for this method are present in this article. the theoretical error rate and the monte carlo simulation result are showed in figure to compare the system error rate performance affected by different premodulation filter

    在系統誤碼模擬中引入了一種有助於改善誤碼性能的鑒頻加多電平判決的解調方法，文中對此方法也進行了詳細的推導和分析，並給出根據此方法計算出的誤碼理論值，結合系統誤碼性能的蒙特卡羅模擬值，對比分析各種預調濾波器對系統誤碼性能的影響。
  6. In this paper, we derive predictive models of system and auxiliary system from double constant alterations respectively. the controller based on d - step ahead predictor can locate the closed loop poles at desired positions, whose parameters are adjusted by estimations of plant parameters that are separately estimated. an auxiliary estimator is developed to avoid ill - condition in solving diophantine equation. simulations show that these control systems have better dynamic responses under existence of measurable disturbance

    引入雙恆等變換推導出系統及輔助系統的的d步預測模型，基於估計器的自校正控制器能將閉環極點配置在所希望的位置，它的參數是由與其相互獨立的對象參數調節.提出使用輔助估計器克服丟番方程的病態問題.模擬表明在存在可測干擾的情況下該系統具有良好的動態性能
  7. Abstract : in this paper, we derive predictive models of system and auxiliary system from double constant alterations respectively. the controller based on d - step ahead predictor can locate the closed loop poles at desired positions, whose parameters are adjusted by estimations of plant parameters that are separately estimated. an auxiliary estimator is developed to avoid ill - condition in solving diophantine equation. simulations show that these control systems have better dynamic responses under existence of measurable disturbance

    文摘:引入雙恆等變換推導出系統及輔助系統的的d步預測模型，基於估計器的自校正控制器能將閉環極點配置在所希望的位置，它的參數是由與其相互獨立的對象參數調節.提出使用輔助估計器克服丟番方程的病態問題.模擬表明在存在可測干擾的情況下該系統具有良好的動態性能
  8. The controllers have considered all sorts of imperceptible factors affecting the servo performances in a lpmsm servo system, which include the parametric uncertainties brought by the changes of the mobile mass, frictional coefficient, the thrust fluctuations aroused by the varieties of the magnetic density distributions and the time harmonic. the h state feedback controller restrains disturbances and uncertainties to keep the robust and stable performance. the ip controller, which has the ability of rapid response, is applied to satisfy the rapid performance

    在分析雙環控制問題時，針對直線永磁同步電動機，仔細考慮了能使伺服系統性能變壞的各種細微因素，如：永磁同步直線電機動子質量變化、摩擦系數變化等造成的模型參數不確定性，電機運行期間存在磁密分佈變化、時間諧波等產生的推力擾動等，採用了ip速度控制器和h _狀態反饋控制器相結合構成直線伺服的內環控制器，並輔助設計了外環的pi位置控制器。
  9. It is believed that it can bring the important inspiration for the future medical micro robot which can be embedded into inner organ of human for inspection, drug spot deliverance and local body surgery. supported by supported by the nation nature science foundation of mechanism, structure and control study on swimming micro robot in liquid ( item no. 69885002 ) and guangdong province science foundation of research on swimming micro robot in liquid ( item no. 980402 ) and guangdong province education department foundation of research on micro pipe robot driven by liquid self energy ( item no. 010043 ), this dissertation mainly deals with much theoretical and, including research situation and the main issue of micro mobile robot in liquid, fish propulsion mechanism, design and locomotion mechanism, and flagellum - like propulsion swimming micro robot in low reynolds number viscous liquid

    本論文得到國家自然科學基金項目「泳動微機器人的機理、機構和控制」 （項目資助號： 69885002 ） 、廣東省自然科學基金項目「液體中泳動微機器人的研究」 （項目資助號： 980402 ）和廣東省教育廳基金項目「基於流體自身能量的微管道機器人研究」 （項目資助號： 010043 ）的資助，主要對液體中微機器人的國內外研究現狀和主要研究問題、魚類推進機理、液體中微機器人的設計與運動機理、低雷諾數粘性液體中仿鞭毛推進微機器人研究等方面進行了大量的理論與實驗研究。
  10. The primary work of this paper is as follow : three aspects are analyzed in detail as to the characteristics of integral rocket - ramjet, which include : a. the matching for inlet shape and missile configuration ; b. the influence on missile conceptual performance caused by the number and position of inlet ; c

    具體表現在如下幾個方面： （ 1 ）針對整體式沖壓發動機的特點，詳細分析了進氣道型式與導彈總體布局的匹配關系、進氣道數目及其安裝位置對導彈總體性能的影響、沖壓發動機和固體助推器的一體化等彈機一體化設計的問題。
  11. In dtc system, the concept of space vector is introduced to analyze and control the ac motor, the electromagnetic torque and flux are caculated and controlled in the stator reference frame, and the optimal pwm gating signas are generated to control the inverter according to the output of the bang - bang regulator. in this paper, the dtc system is designed based on dsp. a speed estimation method is derived detailedly and the sensorless speed close - loop control is conducted. in this system, there are some problems, such as flux drift and torque ripple. to resolve these problem, a modified flux caculation method and some measures such as speed lpf, torque slide filtering are adopted. the system performance is enhanced by these mersures

    直接轉矩控制採用空間矢量的概念來分析異步電機的數學模型和控制其各物理量，直接在定子坐標系中計算和控制轉矩和磁通，藉助于離散的兩點式調節（ bang - bang控制）產生pwm信號，直接對逆變器的開關狀態進行優化控制，以獲得轉矩的高動態性能。本文採用dsp設計了直接轉矩控制系統，詳細推導了速度估計方法，進行了無速度傳感器的速度閉環控制。
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