化工装置可靠性模糊评估技术的研究

FUZZY ASSESSMENT OF PROCESS EQUIPMENT RELIABILITY

结合化工装置中的某些具体实例,运用模糊集理论,在模糊评判、模糊极值函数方面对可靠性评估技术进行了探讨,研究成果用于工程实际,取得较佳效果.

Practical Engineering situations are very often uncertain in a number of ways. Randomness and fuzziness are two types of uncertainty. The first type of uncertainty is described by stochastic models. The second type of uncertainty is solved by the theory of fuzzy sets. Although the theory of fuzzy sets is relatively new, the calculus of fuzzy sets is well developed with various applications in engineering. The fuzzy sets theory can make it possible to study complex and ill - defined system which include uncertainties caused by fuzziness or vagueness. In this work, the reliability assessment of process equipment was studied by using the theory of fuzzy sets such as fuzzy synthetic evaluation and extrama of fuzzy function. The research results were successfully used in engineering practice.