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化為設計變量與約束的顯式關系。
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量方法,記錄其流動時間,簡便地解決了冪函數(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 本文利用柴油機工作過程模型,得出25組模擬計算數(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),并用網格法進行優(yōu)化,用c語言編制了優(yōu)化計算程序,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 由于實際大型供水系統(tǒng)是非常復雜的動態(tài)非線性系統(tǒng),在實際管網的運行中,受到多因素的制約和影響,各綜合因素作用疊加起來造成水流狀態(tài)極其復雜,使得很難以一個或幾個統(tǒng)一的顯式函數(shù)關系描述管網的工況。
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)構件經過了嚴格的質量認證,單獨運行時功能十分明確,但當來自于不同開發(fā)者、不同開發(fā)時間的構件組裝在一起時,就會發(fā)生很多問題,這些問題被稱為“特征干擾” ,而其中那些影響系統(tǒng)正常運行或降低系統(tǒng)運行效率的特征干擾被稱為“特征干擾問題” ,這些問題是必須被檢測出來并予以解決的。
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)化問題靈敏度分析的需要,選取基于正交試驗的靈敏度分析方法,解決了軌跡優(yōu)化問題沒有顯函數(shù),無法通過求其偏導數(shù)獲得靈敏度的難點,同時克服了傳統(tǒng)的單因素輪換法對該類問題進行靈敏度分析帶來的弊端? ?無法對有相互作用的因素進行靈敏度分析,并通過對軌跡優(yōu)化問題進行靈敏度分析,得出了一些有益的結論。