The role of iterative model building in exploration for oil & gas was studied based on the tasks and aims at different stages of reservoir exploration and development 結(jié)合油氣藏勘探開(kāi)發(fā)不同階段的任務(wù)與目標(biāo),論述了迭代建模在油氣藏勘探開(kāi)發(fā)中的作用。
Based on wfomm , the domain engineering , design pattern and uml imported , the thesis puts forward a reusing - based cims integrated modeling scheme . it resolves the reusing problem among the whole process from requirements to design , till coding . the thinking of domain engineering is used all through the thesis so that the commonness and varieties of the different enterprises are modeled in the same domain , consequently completes three phases , inductive and iterative model analysis , model design and model realization , while saving the reusable resources for the same domain 本文始終貫穿領(lǐng)域工程的思想,采用作者提出的表示抽象層次可復(fù)用資源的抽象分析模式,從而實(shí)現(xiàn)了企業(yè)模型、參考模型、建模構(gòu)件三個(gè)階段的從上到下逐步求精和從下到上歸納和反復(fù)的企業(yè)領(lǐng)域分析、設(shè)計(jì)和實(shí)現(xiàn)過(guò)程,并對(duì)每個(gè)階段形成的可復(fù)用資源進(jìn)行保存,供其它相似領(lǐng)域中進(jìn)行領(lǐng)域分析使用,以全面實(shí)現(xiàn)資源的復(fù)用。
Chaos in three typical topology power electronic converters with a close loop controller is studied . the discrete iterative model is established and analyzed for the chaos in close loop boost converter working in discontinuous conduct mode . the tracking control method is used to control chaos of this converter , simulation results show its effectiveness 研究了三種典型拓?fù)浣Y(jié)構(gòu)的電力電子變換器閉環(huán)工作時(shí)的混沌現(xiàn)象,針對(duì)工作在電流斷續(xù)模式( dcm )下的boost變換器中的混沌現(xiàn)象,分析了其數(shù)學(xué)模型,并采用軌跡跟蹤控制方法進(jìn)行了控制,仿真結(jié)果表明了該方法的有效性。
The authors provide guidelines for conducting an iterative modeling method , a step - by - step process modeling method with the identification and listing of tasks , sequencing of tasks , creation of flow controls between tasks , introduction of data into the model , and the integration of services into the process model 作者為管理迭代式的建模方法提供了指導(dǎo)策略,該方法是一步步的流程建模方法,使用鑒定和任務(wù)清單,任務(wù)排列,任務(wù)之間流程控制的創(chuàng)建,模型的數(shù)據(jù)引入,以及流程模型中服務(wù)的集成。