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。
Keep yourself sold on the idea that you will obtain your definite major purpose, no matter how far away that moment seems. autosuggestion is a powerful force in developing enthusiasm
抱持警無
論多麼遙遠,你必將達到既定目標的態度推銷自己,自我暗示是培養
熱枕的有力力量。
A lot of engineering applications are carried out using our proposed method in this paper, such as thermal deformation measurement of a car lamp, analysis of the super low frequency harmonic vibration of a piezoelectric ceramic, dynamic mechanical behavior analysis of the ballistite material and so on
在前面所提出的理
論基礎之上,本文對該方法在實際工程中的應用做出了大量的工作。本文利用時間序列法實現了汽車前燈配光鏡的
熱變形檢測、壓電陶瓷片的超低頻振動分析以及火箭固體燃料的動態力學特性研究。
Meanwhile, august 15th at yasukuni is a bartholomew fair of thugs, fantasists in military garb, deniers of atrocities and xenophobes peddling conspiracy theories
與此同時, 8月15日的靖國神社就成了那些穿著皇軍軍裝的狂
熱分子,否認暴行並兜售陰謀理
論者的「天堂」 。
It focuses on the theory of the mineral functional materials " improving the anti - chloride permeability and the chloride binding. the main achievements of this article include : 1 ) use the technology of xrd, sem, bet, laser particle size distributor etc to test the component, the construction, particle size distributor, specific surface etc of micro - silica, ultra - fined slag, high quality fly ash, meta - kaolin clay, four types of the mineral functional material, theoretically analysis the functions which the four mineral functional minerals act on cement concrete, namely pozzolanicity effect, filling effect, micro - aggregate effect, surface adsorption effect and so bring into play the affect of plastification, lowing of temperature, reinforcement, improvement of durability. base on this analysis we can conclude that the proper diameter of the mineral functional material is 5 m - 15 m, that is blain fineness 4500cm2 / g - 7500cm2 / g
本
論文的主要成果包括以下幾個方面: ( 1 )採用xrd 、 sem 、 bet 、激光粒度分析儀等多種測試手段,探明了以硅灰,超細磨粒化高爐礦渣,優質粉煤灰及偏高嶺土超細粉等4種超細礦物功能材料的組成、結構、粒度分佈、比表面積等基本性質;從理
論上分析了礦物功能材料在混凝土中的4種效應,即火山灰效應、填充密實效應、微集料效應、表面吸附效應,並由此發揮出增塑、溫峰削減(降
熱) ,增強及耐久性改善等作用;通過相關理
論分析,推導出礦物功能材料的合理粒徑范圍在5 m 15 m ,即勃氏比表面積為4500cm ~ 2 g 7500cm ~ 2 g 。
On the basis of expound the theory of building exterior - protected construction energy consumption and the gene of influence the building energy, set up mathematics model, this article discuss the mechanism of dispelling the heat of the buildings " thermal bridge and the complication that influence it, and then synthetic analysis and calculate the influence range of building thermal bridge in exterior - protected construction column thermal bridge to the building outer wall get the conclusion that when the construction column can satisfy the building stress - area, in bulgy construction column dispel less heating than out bulgy construction column. but if the pole stuck out more than 100mm, in bulgy or out bulgy make no difference
本文在闡述建築圍護結構耗
熱原理以及影響建築能耗因子的基礎上,採用數值模擬方法,探討了建築
熱橋傳
熱的基本機理和影響建築
熱橋傳
熱的因素,進而對建築
熱橋在圍護結構傳
熱中的影響范圍進行了綜合分析和計算,研究了構造柱
熱橋型式對建築外墻能耗的影響,得出了構造柱在滿足建築受力面積要求的情況下,內凸構造柱較外凸構造柱略能減少散
熱量的結
論,但是凸出過大( 100mm )無
論內凸還是外凸對建築耗
熱都沒有大的差別。
Soufangwang theory of heat : faster transfer ban is a basic plot
搜房網友
熱論:期房禁止轉讓基本是一個陰謀?
The type of heat transfer inside the pipes belongs to single - phase compulsive turbulent flow of inner pipe. inner trachea is a kind of special pipe compared by smooth pipe, which can strengthen heat transfer inside pipe
空預器煙氣側的換熱類型是管內單相強迫紊流換熱,論文在查閱了相關文獻的基礎上,比較了幾種不同的管內強化換熱措施,在其中選擇內螺紋管代替光管,來改造管式空氣預熱器。