模擬壽命 的英文怎麼說
中文拼音 [mónǐshòumìng]
模擬壽命
英文
agree life-
The research background of this dissertation is the defence pre - research item of the national tenth - five - year plan - “ research on longevous service and high reliability of satellite ”. for improving the diagnosis ability of satellite attitude control systems, this dissertation studies on the telemetering data analyzing and diagnosis based on mathematical simulation
本學位論文以國防「十五」預研項目( 02413200204242 ) 「衛星長壽命高可靠性技術」為研究背景,為提高衛星姿控系統的故障診斷能力,對基於數學模擬的衛星姿控系統遙測數據分析與故障診斷進行了系統、深入的研究和探索。In chapter3, we discuss the multiplicate progressive stresses accelerated life test. under the weibull distribution and an invers power law model we first present a necessary and sufficient condition for the existence and uniqueness of mle for the exponential distribution, then give estimators and confidence intervals of the parameters based on the blue. finally, we study them by using monte - carlo simulation
第三章首先指出了一組序進應力加速壽命試驗下weibull分佈分佈參數的mle不唯一,然後給出了p組序進應力加速壽命試驗下指數分佈的mle存在和唯一的一個充要條件,並用隨機模擬的方法研究比較了參數估計的優良性,最後給出了p組序進應力加速壽命試驗下weibull分佈中參數的點估計和區間估計,討論了有關問題,給出模擬實例。A life cycle cost simulation model of complex repairable equipment
復雜可維修設備壽命周期費用模擬Questions about whether the adsorbent is endurable and whether the adsorption refrigeration equipment has effect on the performance of diesel are answered with theoretical analysis and test. numerical simulation is used in optimum design of adsorbent bed of an adsorption refrigeration prototype which is driven by exhaust heat of gas electric generator
分析了吸附製冷系統是否增加內燃機能耗和吸附劑使用壽命等問題,並採用數值模擬方法,對以燃氣渦輪發電機尾氣為熱源的吸附式製冷樣機,進行了吸附床結構的優化設計。Also, the principle of cas module of the reliability simulator bert 2. 0 is given and a 11 stage ring oscillator is used as an example for bert to predict the lifetime of devices and circuits
概述了電路可靠性模擬軟體bertz刀的cas ( circuitagingsanulator )模塊的基本原理:並以十一級環振為例,運用rh刀進行了其中各個器件和總的電路壽命的預測。Abstract : in this paper, we obtain the point estimetions and the approximate confidence interval of the environment factor of the lognormal distribution based on the censoring samples. the accuracy of the approximate confidence interval is studied by the simalation method
文摘:本文導出了壽命分佈為對數正態分佈時基於截尾樣本環境因子的點估計和近似置信限,對所給近似置信區間作了模擬研究。In this paper, we study the type - i life test of lognormal, normal and weibull distributions with large numbers of samples, get the approximate confidence regions of the parameters, and do many stochastic simulations on the theoretical basis with computer
本文研究了大樣本定時截尾壽命試驗下對數正態分佈、正態分佈和weibull分佈參數的近似置信域,並在理論基礎上進行隨機模擬。We use the stressed fraction that is the most representational and sensitive to corroding to making experiment in combined type equivalent environment spectrum. we can calculate the velocity of corroding, protection period and basal body corroding expansion lifespan, first repair time and the interval of repair period
本文以模擬試驗結果和使用中腐蝕損傷數據統計處理為主要依據,並同時滿足安全性和經濟性兩方面的要求,在確定機體使用壽命時,以疲勞定壽結果為主、日歷定壽為輔,綜合給出飛機機體使用壽命。On the base of thorough analysis of fault characters, the petri net model is introduced and changed into fault petri net ( fpn ) that can be used to settle some critical problems such as complicated faults, degradation competition and one cause with multiple consequence according to the characters of fault evolvement and spreading. in order to predicate the remained life of particular machine under special working conditions, an algorithm was also providcd to analyse the timely characters of the fpn. it is demonstrated that the method provided in this paper can simulate the dynamic evolvement process more appropriate than tranditional methods such as fault tree analysis ( fta ) and can predicate the remained life of the particular machine under special working conditions
為此,深入分析了機械設備的故障特性,把以描述離散事件動態系統見長的petri網分析技術引入到機械設備剩餘壽命預測領域,並根據故障的演變和傳播特點,將petri網加以改造,提出適用於對機械設備復合故障動態演變歷程進行模擬的「故障petri網」 ,解決了「並發故障」 、 「劣化競爭」和「一因多果」等問題,並給出故障petri網的時間特性分析演算法,用於單機具體工況下的剩餘壽命預測。Based on the principle of the cooperation, i. e, the correlative stochastic equations are located on the same probability level, the linear regression with fuzzy weight analysis is adopted to fit the test data, and the three - parameter stress - life curves of the mean and the mean square deviation are obtained
根據協同原理,即相關聯的隨機方程動態地處于同一概率水準,採用模糊隨機加權線性回歸方法對試驗數據進行擬合,得到了三參數的應力-壽命模型均值和均方差曲線,從而求得在給定應力下各可靠度的疲勞壽命。A simulator and computer simulating of barrel life
槍管壽命模擬器和模擬System imitation analysis in the time domain indicates that the amplitude and peak of displacement at the joint between cable and mast are both reduced, and the fatigue life of guyed mast is increased. adjusting the location of mr damper can efficiently reduce the displacement on the top of guyed mast induced by wind
模擬分析表明可以有效地減小桅桿結構纖繩與桿身連接處的位移響應的幅值與峰值,能提高結構的疲勞壽命,通過調節mr阻尼器的作用位置可以改善對桅桿頂部位移響應的控制效果。To directly estimate the life of this kind of motor, and to design a orbit curve with the longest life at same condition, this paper gives theoretic research of the equal contact stress inner curve of radial piston motor. the research is divided into four parts : 1 ) taken all forces the piston endured into consideration when radial piston motor working, the force between roller ( or ball ) and orbit is deduced. the simple style of the press expression can be confirmed by ignoring minor influence factors after analysis all factors that will influence this press
靜壓傳動技術在各類工程機械中得到廣泛的應用,對作為其核心部件的徑向柱塞式低速大扭矩液壓馬達的研究顯得十分重要,為了能直接對這種馬達進行壽命估計,並能在相同工況下求得壽命最長的軌道曲線,本文從設計等接觸應力內曲線的角度對這類馬達作探討性的研究,主要從以下四個方面進行: ( 1 )綜合考慮徑向柱塞式液壓馬達工作時的各種主要受力狀況,對柱塞組件進行受力分析,並通過模擬分析影響軌道和滾動體間正壓力的各個因素,得到正壓力的簡化表達式。Under these approaches, the 1if e of the lower flange connection region between a rib 6 and rib 8 of the front bar of some aircraft are estimated and the fatigue life of simulator of the connection region is experimentally tested and the estimation results and the experimental results are compared
通過用這些壽命估算方法對某型飛機前墻6 8肋段下緣條連接區進行壽命估算與該段連接區模擬試驗件進行疲勞試驗結果分別進行了分析比較。The sample with low emitter efficiency has completed as the method of above. this lead to the greatly decrease of the reverse recovery time and the low reverse leakage and forward voltage, especially the excellent temperature character of the leakage. the test date shows that the samples reach the first class of international level
本論文作者通過模擬測試,驗證了課題研究的理論設想,並設計製作了具有低陽極發射效率結構的高壓功率frd ,利用局域鉑摻雜和電子輻照相結合的壽命控制方式,實現器件反向恢復時間的極大減小,並且反向漏電流、軟度因子、正向壓降等關鍵參數也較理想,且具有極佳的漏電溫度特性,達到器件綜合性能的優良折衷,達到國際先進水平。As a nondestructive technique to measure the inner fine structure of the cathode, the ict has the unique advantage. we discussed the emission mechanism of thermionic cathode, and tried to explain the excellent performance of mixed metal cathode by richardson formula and muller ' s computational model
4 )就當前鋇鎢陰極發射機理的兩個主要理論模型作了自己的探討,並初探了鋇鎢陰極中鋇的供應機制及發射壽命預測的問題,而且用理查遜公式的推導和muller計算機模擬法解釋了混合基鋇鎢陰極的優良性能。Vacuum circuit breaker ' s condition simulation based on artificial neural network and electrical endurance quality criterion
基於人工神經網路和電壽命判據的真空斷路器模擬On the basis of finite element numerical simulation technology and s - n curve data base of welded joint, the course of fatigue test of physical prototype was simulated with computer and the fatigue life of welded structure was predicted, so as to let the development of anti - fatigue design becoming possible in the designing stage of product
基於有限元數值模擬技術及焊接接頭s - n曲線數據庫,在計算機中模擬物理樣機的疲勞試驗過程,預測焊接結構的疲勞壽命,使產品在設計階段開展抗疲勞設計成為可能。The result of calculation realized the influence of the temperature field to wear simulation and uncertainty factor to abraion life. consequently realized t he target of high - reality simulation
計算結果實現了溫度及壓力對磨損模擬的影響,不確定因素對磨損壽命的影響,從而實現了高真感模擬的目標。Fem simulation is presented to study the deformation of the porthole die during the process of aluminum profile extrusion, it will provide evidence for the scientific and suitable design of the die, finally the increase of product precision and the life of die can be reached
介紹了國內外應用有限元方法對鋁型材擠壓過程研究的狀況,提出了對鋁型材擠壓過程中分流模的變形進行有限元數值模擬研究的思路,為模具的科學、合理設計提供依據,以達到提高產品尺寸精度,提高模具壽命的目的。分享友人