Don ' t be wishy - washy . define explicit function arguments 不要不正式。定義顯式的函數(shù)參數(shù)。
Then using the method of unit virtual - load , the displacement constraints are transformed into a explicit function to the design variables 然后利用單位虛載荷法將位移約束轉(zhuǎn)化為設(shè)計(jì)變量與約束的顯式關(guān)系。
In light of the measure way of fluid static pressure falling in proportion , the explicit function method of solving exponent by power function was simply and conveniently acquired through recording fluid flowing times 文章采用流體靜壓頭下降成比例的測(cè)量方法,記錄其流動(dòng)時(shí)間,簡(jiǎn)便地解決了冪函數(shù)求解指數(shù)的顯函數(shù)方法。
A new calculation method for optimizing diesel engine performance , called nonlinear regression - mess method , is put forward . in this paper , 25 groups of simulated values are calculated from the diesel engine working model , specific fuel consumption , peak pressure , rate of pressure rise , nox and peak temperature are fitted into explicit function about compression ratio and fuel injection advance angle 本文利用柴油機(jī)工作過(guò)程模型,得出25組模擬計(jì)算數(shù)據(jù),利用非線性回歸將油耗、最大爆發(fā)壓力、壓力升高率、 no _ x濃度及最高燃燒溫度擬合成壓縮比和噴油提前角的顯函數(shù),并用網(wǎng)格法進(jìn)行優(yōu)化,用c語(yǔ)言編制了優(yōu)化計(jì)算程序,得出最佳的壓縮比和噴油提前角,使其優(yōu)化匹配。
According to the hourly water demand forecasting results of hangzhou city , the reasonability and effectiveness of this model was proved . real large water supply system is a complicatedly dynamic nonlinear system , it is influenced by many factors , and these factors are interactional . it is difficult to simulate water distribution networks by using one or several explicit functions 由于實(shí)際大型供水系統(tǒng)是非常復(fù)雜的動(dòng)態(tài)非線性系統(tǒng),在實(shí)際管網(wǎng)的運(yùn)行中,受到多因素的制約和影響,各綜合因素作用疊加起來(lái)造成水流狀態(tài)極其復(fù)雜,使得很難以一個(gè)或幾個(gè)統(tǒng)一的顯式函數(shù)關(guān)系描述管網(wǎng)的工況。
While single component has explicit functions in runtime after strictly qualified , problems come out with composed components , which developed by different developers in different time . those problems are so called " feature interaction " . and those feature interactions , which influence the normal system operations and decrease the system efficiency , are called " feature interaction problem " , and should be checked out and be resolved 大多數(shù)構(gòu)件經(jīng)過(guò)了嚴(yán)格的質(zhì)量認(rèn)證,單獨(dú)運(yùn)行時(shí)功能十分明確,但當(dāng)來(lái)自于不同開發(fā)者、不同開發(fā)時(shí)間的構(gòu)件組裝在一起時(shí),就會(huì)發(fā)生很多問(wèn)題,這些問(wèn)題被稱為“特征干擾” ,而其中那些影響系統(tǒng)正常運(yùn)行或降低系統(tǒng)運(yùn)行效率的特征干擾被稱為“特征干擾問(wèn)題” ,這些問(wèn)題是必須被檢測(cè)出來(lái)并予以解決的。
Secondly , according to the requirement of the parametric sensitivity analysis , the method based on orthogonal experiment is chosen to cope with the difficulty of obtaining the sensitivity analysis through the partial derivative of explicit function . and it also overcomes the traditional single factor cyclical method ' s shortcoming ? impossibility to analysis interactional factors . furthermore , some significative conclusions are acquired from the sensitivity analysis 其次根據(jù)軌跡優(yōu)化問(wèn)題靈敏度分析的需要,選取基于正交試驗(yàn)的靈敏度分析方法,解決了軌跡優(yōu)化問(wèn)題沒(méi)有顯函數(shù),無(wú)法通過(guò)求其偏導(dǎo)數(shù)獲得靈敏度的難點(diǎn),同時(shí)克服了傳統(tǒng)的單因素輪換法對(duì)該類問(wèn)題進(jìn)行靈敏度分析帶來(lái)的弊端? ?無(wú)法對(duì)有相互作用的因素進(jìn)行靈敏度分析,并通過(guò)對(duì)軌跡優(yōu)化問(wèn)題進(jìn)行靈敏度分析,得出了一些有益的結(jié)論。