中国机械工程
中國機械工程
중국궤계공정
CHINA MECHANICAl ENGINEERING
2012年
2期
211-215
,共5页
装配可靠性%动态贝叶斯网络%功能分析%多态系统
裝配可靠性%動態貝葉斯網絡%功能分析%多態繫統
장배가고성%동태패협사망락%공능분석%다태계통
assembly reliability%dynamic Bayesian network%functioning analysis%multi--state system
为了提高产品的整机可靠性,提出了可靠性驱动的装配技术(reliability driven assembly technology,RDAT)的概念。根据可靠性要求,首先利用结构分析和设计技术(structured analysis and design technique,SADT)对所装配产品进行功能分析,得到“元动作”粒度的SADT模型。然后采用具有时间特性的动态贝叶斯网络对RDAT进行了建模,将“元动作”级别的SADT模型转化为相应的动态贝叶斯网络模型。最后以某加工中心的托盘交换架进行实例分析,在装配产品和功能动作为多态系统的情况下,验证了该建模与仿真方法的有效性。
為瞭提高產品的整機可靠性,提齣瞭可靠性驅動的裝配技術(reliability driven assembly technology,RDAT)的概唸。根據可靠性要求,首先利用結構分析和設計技術(structured analysis and design technique,SADT)對所裝配產品進行功能分析,得到“元動作”粒度的SADT模型。然後採用具有時間特性的動態貝葉斯網絡對RDAT進行瞭建模,將“元動作”級彆的SADT模型轉化為相應的動態貝葉斯網絡模型。最後以某加工中心的託盤交換架進行實例分析,在裝配產品和功能動作為多態繫統的情況下,驗證瞭該建模與倣真方法的有效性。
위료제고산품적정궤가고성,제출료가고성구동적장배기술(reliability driven assembly technology,RDAT)적개념。근거가고성요구,수선이용결구분석화설계기술(structured analysis and design technique,SADT)대소장배산품진행공능분석,득도“원동작”립도적SADT모형。연후채용구유시간특성적동태패협사망락대RDAT진행료건모,장“원동작”급별적SADT모형전화위상응적동태패협사망락모형。최후이모가공중심적탁반교환가진행실례분석,재장배산품화공능동작위다태계통적정황하,험증료해건모여방진방법적유효성。
For improving the reliability of products, a reliability driven assembly technology (RDAT) was presented. According to the requirements of reliability, structured analysis and design technique(SADT) was firstly applied to functioning analysis,then the last level of SADT model could be obtained. The dynamic Bayesian networks(DBN) which can depict the time was applied to modeling for RDAT,the SADT model was converted to corresponding DBN model. At last, while the system and functional actions were multi--states, the pallet changer of some machining center was taken as an example to verify the effectiveness of the model and simulation analysis method.