Title :
Fuzzy effective degree analysis in mining machine based on the structured element theory
Author :
Yan Yan ; Zhao Bao-fu
Author_Institution :
Sch. of Bus. & Manage., LiaoNing Tech. Univ., Fuxin, China
Abstract :
The effective degree is studied in reliability of mine coal mining machine by using the fuzzy structured element theory. Firstly, the fuzzy reliability, fuzzy maintainability and fuzzy effective degree are defined. The analytic expression of fuzzy effective degree are put forward by using the structured element theory and fuzzy extension principle. An example is given to calculate fuzzy effective degree of winning machine. The example indicates that fuzzy effective degree is the non-symmetric fuzzy number on [0.56, 0.99] and the method of calculating for the classic effective degree over-estimated the reliability of the mining machine.
Keywords :
coal; fuzzy set theory; maintenance engineering; mining equipment; reliability; fuzzy effective degree; fuzzy effective degree analysis; fuzzy extension principle; fuzzy maintainability; fuzzy reliability; fuzzy structured element theory; mine coal mining machine reliability; Coal mining; Maintenance engineering; Probability density function; Random variables; Reliability engineering; Reliability theory; fuzzy effective degree; mining machine; structured element;
Conference_Titel :
Information Management, Innovation Management and Industrial Engineering (ICIII), 2013 6th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4799-3985-5
DOI :
10.1109/ICIII.2013.6703589
