Incomplete preventive combined maintenance model for complex equipment

Abstract

The invention discloses an incomplete preventive combined maintenance model for complex equipment. The incomplete preventive combined maintenance model comprises the following steps: firstly, determining an elastic maintenance period of the equipment under reliability constraint; starting from the maintenance difference of all parts in the equipment, constructing preventive maintenance and preventive replacement measurement indexes so as to select a proper maintenance mode, and deducing a part dynamic degradation process including a service age rollback factor and a failure rate increasing factor for the incompleteness in maintenance; and finally, establishing a maintenance model which takes reliability as a center and takes no maintenance, minor fault maintenance, preventive maintenance and preventive replacement into consideration in each elastic maintenance period of the equipment. On the basis of ensuring the reliability of the system, on-demand maintenance of parts is achieved, the traditional phenomena of insufficient maintenance, excessive maintenance and the like are avoided, more optimized maintenance strategy support can be provided, and the maintenance cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of preventive maintenance optimization of complex electromechanical equipment, and in particular relates to an incomplete preventive combined maintenance model of complex equipment. Background technique [0002] Incomplete in this application refers to: parts cannot be restored to newness after repair, and there is accumulation of deterioration, which can only be restored to newness by replacement. Preventiveness in this application refers to: analyze the life distribution curve of the components, and carry out certain maintenance activities before the equipment fails, so that the equipment can continue to work. Combined maintenance in this application means: the maintenance method of components is optional, including no maintenance, minor repairs, preventive maintenance and preventive replacement. [0003] With the improvement of my country's modern industrial level, electromechanical equipment tends to be...

AI Technical Summary

Problems solved by technology

The traditional concepts based on "fault repair" and "period repair" can no longer meet the reliability and economical requirements of complex multi-component equipment maintenance. More and more scholars have carried out preventive maintenance research on complex equipment.

However, there are still some problems in the existing research: 1. Ignore the differences of the various components in complex equipment, and organize the equipment into a simple whole; 2. Ignore the change of the performance degradation speed after equipment maintenance, and the maintenance cycle is fixed ; 3. The maintenance method of each component in the equipment is too single

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