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机械设备运行可靠性评估的发展与思考_何正嘉
50 2 Vol.50 No.2
2014 1 JOURNAL OF MECHANICAL ENGINEERING Jan. 2014
DOI 10.3901/JME.2014.02.171
*
( 710049)
ISO3945
TH17
Developments and Thoughts on Operational Reliability Assessment of
Mechanical Equipment
HE Zhengjia CAO Hongrui ZI Yanyang LI Bing
(State Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong University, Xi’an 710049)
Abstract Operational reliability assessment of the specified mechanical equipment is an individual problem. The average reliability,
obtained by using probability statistics method with large sample data, cannot fulfil requirements of operating reliability evaluation for
individual equipment.The emerged problems are summarized when the traditional reliability theory is applied to operational reliability
assessment of mechanical equipment, and corresponding improved methods are reviewed. The theoretical basis and technical
connotation of operational reliability assessment for individual equipment, which is based on dynamic modelling, fault mechanism
analysis, signal processing and fault feature extraction, are expounded. Then, a new concept of operational reliability is given and the
degree of operational reliability is defined. An operational reliability assessment approach based on running condition information of
mechanical equipment is proposed. Mapping models between runni
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