Method for predicting remanufacture timing of mechanical equipment

A technology of mechanical equipment and prediction method, applied in the field of remanufacturing, can solve problems such as increasing the complexity of optimization control of remanufacturing system, and achieve the effect of saving remanufacturing cost and prolonging service life

Active Publication Date: 2018-07-03
CHANGAN UNIV
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  • Claims
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Problems solved by technology

These factors greatly increase the complexity of optimal control of remanufacturing systems

Method used

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  • Method for predicting remanufacture timing of mechanical equipment
  • Method for predicting remanufacture timing of mechanical equipment
  • Method for predicting remanufacture timing of mechanical equipment

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Embodiment Construction

[0042] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0043] Waste equipment will inevitably fail during service. In the later period of product service, due to the coupling effect of fatigue, wear, corrosion and other failure forms, the frequency of product failure increases, and the number of maintenance and maintenance costs also gradually increase. Choosing the right timing is very critical to repairing and improving the remanufacturing performance of the product. The present invention uses the remanufacturing timing prediction of the two-parameter Weibull distribution to recycle and remanufacture the waste equipment at an appropriate timing.

[0044] see figure 1 According to the bathtub curve, the study found that the performance curve of the product roughly obeys the "bathtub curve" during the service process. From the service time of the product into the third stage of the bathtub curve, the product perf...

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Abstract

The invention relates to a method for predicting the remanufacture timing of mechanical equipment. The method includes the steps of first obtaining the failure time of several components in mechanicalequipment as sampling data, and using a median rank method to estimate the cumulative failure probability; fitting parameters by a least square method to obtain a relational expression of cumulativefailure probability and reliability; using the relational expression of cumulative failure probability and reliability and a reliability expression of two-parameter Weibull distribution to obtain a solution formula of a two-parameter Weibull failure rate h(t); using the solution formula of h(t) to solve N(t) according to the formula (as shown in the description); constructing a remanufacture timing decision-making model, substituting N(t) into the remanufacture timing decision-making model, and solving the theoretical remanufacture timing Td; and comparing the theoretical remanufacture timingTd with the recovery timing Tb after the mechanical equipment failure to determine the remanufacture timing of the mechanical equipment. The method of the invention can reliably predict the remanufacture timing, control the degree of waste failure, and save the remanufacture cost.

Description

technical field [0001] The invention relates to the field of remanufacturing, in particular to a method for predicting remanufacturing opportunities of mechanical equipment. Background technique [0002] Green remanufacturing, as an important part of net recycling, has always attracted the attention of scholars at home and abroad. Remanufacturing is defined as: Remanufacturing (Remanufacture) takes the damaged or about to be scrapped complete machine or parts as the processing object. In the performance failure analysis On the basis of remanufacturability assessment, such as remaining life assessment, a series of advanced remanufacturing engineering technologies are used to implement high-tech repair and transformation of waste products, so that the quality of remanufactured products can reach or even exceed the process of new products. Remanufacturing is an innovative development of maintenance, and it is a new industrial field that is crossed, integrated and optimized in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/04
CPCG06Q10/04G06Q50/04Y02P90/30
Inventor 蔡宗琰张丹刘清涛张野
Owner CHANGAN UNIV
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