Method for calculating remanufactured part environmental loss based on back propagation (BP) neural network

Abstract

The invention discloses a method for calculating remanufactured part environmental loss based on a back propagation (BP) neural network. The method comprises the following steps of: (1) acquiring a measured part, wherein values of remanufacturing process parameters which influence the measured part serve as detection data; (2) establishing an error BP neural network model according to the detection data which are normalized; (3) training and testing the error BP neural network model, if an error is smaller than an error threshold, executing the step (4), if the error is not smaller than the error threshold, continuously training and testing the error BP neural network model, and finishing process until the number of iterations reaches preset number and the error is not smaller than the error threshold; (4) checking a network by using a second part of data, judging whether the error BP neural network model meets a requirement on matching rate, if so, executing the step (5), and otherwise, executing the step (3); and (5) inputting actual detection data of a remanufactured part into the error BP neural network model which meets the requirement on the matching rate, and predicting the environmental loss.

Description

technical field [0001] The invention relates to a calculation of environmental loss of remanufactured parts of engineering machinery, in particular to a calculation method of environmental loss of remanufactured parts based on BP (error back propagation) neural network. Background technique [0002] Since the 1980s, with the increasing shortage of natural resources and the improvement of people's environmental awareness, a new research field, remanufacturing engineering, has been formed internationally with the goal of making full use of resources and reducing environmental pollution. Remanufacturing engineering is a series of technical measures or projects for repairing or transforming waste products, guided by the theory of product life cycle, aiming at high quality, high efficiency, energy saving, material saving and environmental protection, and adopting advanced technology and industrialized production as means. The general term for the activity. [0003] In order to e...

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Problems solved by technology

[0005] Since there are many factors involved in the environment, and the relationship between the factors is complicated, it is difficult to calculate the degree of remanufacturing with a functional relationship, resulting in low accuracy of the degree of remanufacturing, which makes it impossible to make full use of waste products and waste a certain amount of time. resource

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