forward circuit 中文意思是什麼
forward circuit
解釋
正向電路-
The works finished in the paper conclude : 1 ) based on embedded analysis of asic system, the paper put forward the design scheme of the core controller 805 1 and its periphery circuit and designed frame architrave of the system
論文所作的工作包括： 1 ）基於對集成系統的深入分析，本文提出了8051核心控制器與外圍電路介面的設計方案，並設計了系統的結構框圖。 -
This paper mainly aims at the characteristics of the hardware and software structure of the parallel computer on satellite, and has fulfilled researches of fault tolerant technique in three aspects of control theories and engineering : the first research of the system level fault - tolerant module is based on the system structure of the parallel computer on satellite, a kind of cold backup module and a kind of hot backup module for multiprocessor computer have been put forward. then the research of software fault tolerant technique which is based on the operate system named rtems has been carried, the mission level fault - tolerate arithmetic and the system level fault - tolerate mechanism and strategies based on the check point technique have been put forward, at the same time the self - repair technique of software which has used the technique of system re - inject has been studied. finally the technique of components level fault - tolerant based on fpga has been studied, a kind of two level fault - tolerant project which aims at the fault - tolerant module of the parallel computer on satellite has been put forward, and the augmentative of circuit that project design realization need is little, this project can avoid any breakdown of any part logic circuit of the fpga
本課題主要針對星載并行計算機體系結構及軟體結構的特點，從如下三個方面進行了容錯控制理論研究和實踐工作:首先進行了基於星載多cpu并行計算機體系結構的系統級容錯模型研究，提出了一種多cpu冷備份容錯模型和一種多cpu熱備份容錯模型;然後進行了基於rtems操作系統的軟體容錯技術研究，提出了任務級容錯調度演算法以及基於檢查點技術的系統級容錯恢復機制和策略，同時研究了利用系統重注入進行軟體在線自修復的容錯技術;最後研究了基於fpga的部件級容錯技術，提出了對容錯模塊這一星載并行計算機關鍵部件的兩級容錯方案，實現該方案所需增加的電路少，可避免板級晶元以及fpga晶元內部任何邏輯發生單點故障。 -
On the basis of the situation analysis for practical engineering application, it is put forward to add compensating measures in airspace circuit including instruction feedforward, target feedforward, carrier aircraft feedforward and radome refraction compensation to improve the airspace stabilization accuracy
根據實際工程應用中的情況分析，為提高空域穩定精度，提出了在空域穩定迴路中加入補償措施，即指令前饋、目標前饋、載機前饋和天線罩折射補償。 -
She looked forward to the occasional visits of the minister, robert ayers, who was a methodist circuit rider
她盼望著衛理公會教派騎馬巡迴的羅伯特?埃亞牧師的偶然造訪。 -
In this paper, a kind of output current feed - forward circuit is added into the input of the current loop. by adding this compensatory circuit, the output character of the inverter is improved greatly
本文還研究了一種提高逆變器輸出電壓外特性的思路，通過將負載電流正反饋給逆變器的電流環輸入端，從而達到提高輸出電壓的外特性的目的。 -
It ’ s a medical treatment equipment of high capability but low price. this thesis chooses a discal peristaltic pump and put forward amelioration schemes based on analysis of trait of transfer pump in common use presently and selects stepper motor as drive motor. in order to reduce the whole volume, the pcb board integrates stepper motor drive circuit, keyset, alarm circuit and lcd
本文在分析目前常用輸液泵的優缺點的基礎上，選擇dg - 1盤狀蠕動泵，並進行了結構改進;選擇步進電機作為輸液泵的驅動電機，為縮小整體的體積，將步進電機的驅動電路、按鍵、 lcd和報警電路集成到單板上。 -
A circuit topology of the inverter with duty cycle extended active clamp forward style high frequency pulse dc link is adopted by each independent inverter. each inverter is cascaded by a circuit with duty cycle extended active clamp forward style high frequency pulse dc link and a dc / ac inverting bridge. the control strategy of voltage mode pwm forwardback is adopted by the former, and the control strategy of three - state discrete pulse modulation ( dpm ) hystersis current is adopted by the later
每個獨立的航空靜止變流器採用占空比擴展有源箝位正激式高頻脈沖直流環節電路拓撲，由占空比擴展有源箝位正激式高頻脈沖直流環節電路與dc ac逆變橋級聯而成，前級採用電壓型pwm前饋控制技術，后級採用三態dpm電流滯環控制技術。 -
In the next place, by studying the change of the resonant frequency of the whole system, this paper designs the circuit to track the resonant frequency of the system by cd4046 mainly. at the same time, in order to improve the efficiency and get better dynamic capability of the converter, we choose pll and fuzzy control after comparing the pll circuit, fuzzy circuit and pll ? fuzzy control circuit. in the end, this paper brings forward the control blue print to realize the drive control circuit of the high frequency converter, using the dsp chip as the key part to realize four routes of pwm drive pulses with dead band of the control system
其次，通過對整個系統諧振頻率變化的分析和研究，設計了以鎖相環cd4046為核心的鎖相環控制電路，同時，在綜合比較鎖相環控制、模糊控制以及模糊控制和鎖相環復合控制三種控制演算法的基礎上，進行了系統模擬，得出採用復合控制可使跟蹤電路既具有鎖相環路較好的穩態性能，又擁有模糊控制較好的動態性能，系統魯棒性能好，同時也提高了逆變器的效率。 -
Firstly, the connected end sets of the relay lines are got using the breadth first search algorithm and the connected relationship of wiring terms is got in the electrical circuit diagram according to different cad block structure of different element type. secondly, the appropriate specification of the relay element is chosen by using the equinoctial graph algorithm, and the panel layout diagram is generated automatically by the combining automatic layout and manual intervention. finally, the optimized path algorithm which passes each vertex in the completed non - directional graph once and only once is put forward, this algorithm and the prim minimum spanning tree algrotithm can generate the inner panel wiring diagram and terminal wiring diagram automatically
首先，採用廣度優先搜索演算法查找電氣原理圖中的連通導線端點集，並根據不同類型的繼電元件對應的cad圖塊結構的不同，得到電氣原理圖中元件接線端子之間的連接關系;其次，根據二分圖匹配演算法為電氣原理圖中繼電元件選擇合適的型號和規格，並採用人工干預和自動布置相結合的方法完成屏面布置圖的自動生成;最後，提出了完全無向圖中經過每個頂點一次且僅一次的優化路徑演算法，利用該演算法和經過預處理的prim最小生成樹演算法自動生成屏內安裝接線圖和端子接線圖。 -
Abstract : making a comparison between bladder - type accumulator and piston accumulator, the paper presents the characteristics of both devices, puts forward and recommends to “ piston accumalator with gas bomb ” circuit design solution for large oil compensating and pressure maintaining system and makes an exposition of the operating process and methods for pressurizing by air inflation with piston accumulator
文摘:對比說明了囊式和活塞式蓄能器的特點，對大型補油保壓系統提出了推薦採用「帶儲氣瓶的活塞式蓄能器」迴路設計方案的觀點，並闡述了利用活塞式蓄能器進行充氣加壓的操作過程和方法。 -
At recent decade, accompany with surface mount technology printed - circuit board to produce fly of automation degree to soon develop, as to it ' s correspond of mass defect the inspection also put forward higher request, from in brief shoot to be like system to complicated " 3 - d " x optics to examine system, the automatic optical inspection is in great quantities adopt by the each production factory house
摘要在最近十年，伴隨著表面貼裝印刷電路板生產自動化程度的飛速發展，對其相應的質量缺陷檢查也提出了更高的要求，從簡單的攝像系統到復雜的" 3 - d " x光檢測系統，自動光學檢測系統大量被各生產廠家採用。 -
Motion controller composed of general chip series is developed and quadruple differential circuit utilizing dual monostable multivibrators with schmitt trigger inputs and dual 4 _ line to l _ line data selectors or multiplexers is put forward
本論文研製了一種用常規晶元系列組成的運動控制器，提出了採用單穩態多諧振蕩器和數據選擇器的四倍頻辨向電路。 -
To comply with the low - power - consumption application, low - voltage design is taken into account by using some special circuit structures. besides there are many nonideal effects in pll which degrade the loop performance badly, some efficient solutions have been put forward to suppress the undesired ones
此外論文還討論了若干制約環路性能的非理想效應，並在借鑒國外相關理論成果的基礎上，成功設計了克服這類效應的一些改進電路。 -
The factors limiting the frequency band of the wide - band amplifier are introduced. through analyzing the effects of the intrinsic parameters and parasitical on the frequency characteristics, a method of improving fr of mosfet by using short channel device and making mosfet work at the saturation region through raising vgs is put forward ; the effects of different kinds of circuit configurations on the frequency characteristics and the junction voltage on the voltage pattern circuit, current pattern circuit and frequency characteristics are analyzed. according to the linear theory of transconductance which is applied in the bit circuit, the current pattern amplifier circuit, current transfer circuit and output circuit which consist of mosfet and the wide - band amplifier composed of them are put forward
介紹了限制寬帶放大器頻帶寬度的因素，通過分析mosfet的本徵參數、寄生參數對頻率特性的影響，提出了採用短溝器件、使mosfet工作在飽和區、抬高柵源電壓等提高mosfet特徵頻率的方法；分析了不同電路組態對放大器頻率特性的影響、節點電壓對電壓模電路、電流模電路頻率特性的不同影響，根據應用於雙極晶體管電路的跨導線性原理，提出了採用mosfet構成的電流模放大電路、電流傳輸電路、輸出電路以及由它們所組成的寬帶放大器，獲得了良好的頻率響應。 -
Then novel circuit structure of bi - directional voltage mode ( based on forward converter ) inverters with high frequency link, are proposed, which is constituted of input cycloconverter, high frequency transformer, output cycloconverter, input and output filter ; the circuit topologies family of this bi - directional voltage mode inverters with high frequency link include six circuit topologies, such as push pull - full wave mode, push pull - full bridge mode, half bridge - full wave mode, half bridge - full bridge mode, full bridge - full wave mode, and full bridge - full bridge mode etc. taking full bridge - full bridge mode circuit as an example, principle of uni - polarity phase shifting controlled bi - directional voltage mode inverters with high frequency link is introduced
本文首先論述了dc / ac逆變技術的應用前景及發展現狀。基於正激forward變換器的雙向電壓源型高頻環節逆變器電路結構，由輸入周波變換器、高頻變壓器、輸出周波變換器、以及輸入、輸出濾波器構成;雙向電壓源高頻環節逆變器電路拓撲族，包括推挽全波式、推挽橋式、半橋全波式、半橋橋式、全橋全波式、全橋橋式六種電路。 -
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 ） 。 -
A new type thick - film circuit heatin g - element is introduced and the main technology is expounded, including the requireme nt and performance of substrate mate rial and electro - pastes. the process of heating - element is intro duced too. at last, the application a nd problem of the new type heating - element are put forward
介紹了基於不銹鋼基板的大功率密度厚膜電熱元件的研究現狀，並對厚膜電路式電熱元件的關鍵技術進行闡述，包括大功率密度電熱元件所用基板材料和基於基板的電子漿料的使用要求，以及電熱元件的制備工藝;最後分析了該新型電熱元件的應用前景和所要解決的問題。 -
Design of double forward passive lossless snubber circuit
雙管正激無源無損緩沖電路的設計 -
Because of the advantages of high efficiency, small volume and weight, the active - clamped forward circuit are used as the dc / dc converter
鑒于有源箝位正激變壓器體積較小、重量較輕，採用它作為前級的電路拓撲。 -
First, on the base of theory analysis and computer simulation, this paper uses interleaved two - transistor forward circuit to realize the main circuit of boost dc - dc converter, and also presents the structure, the principle and the design. the method is proved to be effective by simulation
首先，在理論分析和計算機模擬的基礎上，本文選擇交錯並聯雙管正激變換拓撲作為升壓型直直變換器的主電路，對它進行了電路原理分析和具體的設計，模擬結果驗證了該設計方法的可行性與有效性。
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