【摘要】：隨著全球經(jīng)濟、技術的飛速發(fā)展,機電產(chǎn)品日益大型化、復雜化、應用廣泛化。傳統(tǒng)的依據(jù)以往的經(jīng)驗教訓亡羊補牢式的產(chǎn)品安全性設計方法已經(jīng)不能滿足人們日益增長的對產(chǎn)品安全性的要求,同時也承受不起因之帶來的巨大損失。因此,在設計階段通過科學的安全性分析與風險評價,使全壽命周期各階段安全風險達到可接受水平,已成為產(chǎn)品質量乃至系統(tǒng)安全性研究者重點關注的內容之一。 為了更好地提高產(chǎn)品安全性,出現(xiàn)了本質安全的相關研究。本論文在原有安全性量化研究的基礎上,針對以往產(chǎn)品安全性量化、評價存在的對產(chǎn)品本質安全化程度考慮不充分等相關問題,對機電產(chǎn)品本質安全度進行了研究。 本文首先在已有本質安全研究的基礎上,提出了本質安全度的概念,并分析了其內涵;以物質的危險性、結構的復雜度和關鍵件的可靠度為指標,給出了本質安全度的定性分級模式;其次,針對有安全裝置的產(chǎn)品,利用模糊理論確定安全裝置某種故障模式最可能發(fā)生的故障狀態(tài),重點分析了該狀態(tài)下殘余的安全功能對產(chǎn)品事故發(fā)生的影響,同時借助故障樹分析方法,建立了產(chǎn)品本質安全度的量化模型;此外,分析了安全裝置對產(chǎn)品本質安全度的影響,并給出了影響程度的計算過程,為安全裝置的選擇提供了依據(jù)。從而為產(chǎn)品安全性設計方案的選擇提供理論依據(jù)和方法,亦可為建立全面的、科學的產(chǎn)品安全性評價體系奠定理論基礎。最后,以電梯為例,通過對其本質安全度的求取,驗證了本論文研究內容的可應用性。
[Abstract]:With the rapid development of global economy and technology, mechanical and electrical products are becoming more and more large, complicated and widely used. The traditional product safety design method, which is based on the past experience and lessons, can not meet the increasing demand of product safety, and at the same time, it can not afford the huge loss. Therefore, through scientific safety analysis and risk evaluation in the design phase, it has become one of the key concerns of product quality and system safety researchers to make the safety risk of the whole life cycle reach the acceptable level. In order to improve the safety of products, there has been related research on essential safety. On the basis of the original safety quantification research, this paper studies the intrinsic safety degree of mechanical and electrical products, aiming at the related problems of product safety quantization in the past and evaluating the degree of product essential safety. On the basis of the existing research on essential safety, the concept of essential safety degree is put forward in this paper, and its connotation is analyzed, which is based on the risk of substance, the complexity of structure and the reliability of key parts. The qualitative classification model of the essential safety degree is given. Secondly, the fuzzy theory is used to determine the most likely fault state of a certain fault mode of a safety device for a product with a safety device. The influence of residual safety function on the occurrence of product accidents is analyzed, and the quantitative model of product essential safety degree is established by means of fault tree analysis, and the influence of safety device on product essential safety degree is analyzed. The calculation process of the influence degree is given, which provides the basis for the selection of safety device. Thus it can provide theoretical basis and method for the selection of product safety design scheme, and also lay a theoretical foundation for the establishment of a comprehensive and scientific product safety evaluation system. Finally, taking elevator as an example, the applicability of the research content is verified by calculating the intrinsic safety degree of elevator.
【學位授予單位】：沈陽航空航天大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH122;TH-39

【引證文獻】

相關期刊論文 前1條

1 文欽弘;楊博欽;;乘用車本質安全度評價模式研究[J];沈陽理工大學學報;2013年01期

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本文編號：2194634