机电产品安全性量化模式研究

针对以往研究机电产品安全性量化指标以试验和产品可靠性为主方法的不足之处,建立了以产品事故风险为主要表征的机电产品安全性量化模型：一方面,以产品危险状态导致产品事故为基础,利用马尔科夫随机理论,量化机电产品事故发生概率及状态转移概率,并进一步探讨二次事故的发生概率;另一方面,改进FMECA以确定产品事故的严重度。最终形成以产品事故风险为表征的产品安全性量化模式。

Safety Quantitative Model of Machinery & Electrical Products

In this thesis,quantitative indicators and methods of evaluation all around the world about machineryelectrical products safety have been researched,which most based on type tests and reliability.Then,the defects of these methods are discussed.In light of the above study,a safety quantitative model of machineryelectrical products was established in this thesis which characterizing on the risk of accidents as the major input.On the one hand,based on the Accident Causes Theory of hazard state lead to product accidents,combined with machineryelectrical products character,according to Markov random theory,the probability of the accident and state transition on machin eryelectrical products were quantified.Further,the probability of secondary accidents were researched.On the other hand,the random consequences of accidents were studied in this model,then improved FMECA to determine the severity of the accident.Ultimately,the safety of products was quantified by characterizing on the risk of accidents.