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

A technology of BP neural network and calculation method is applied in the field of calculation of environmental loss of remanufacturing of engineering machinery parts, which can solve the problems of calculation of remanufacturing degree, low accuracy of remanufacturing degree, and complex factor relationship.

Inactive Publication Date: 2013-01-16
TIANJIN UNIV
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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 f

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

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Embodiment Construction

[0051] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0052] In order to realize the accurate calculation of the remanufacturing degree, improve the utilization rate of waste products, and save resources, the embodiment of the present invention proposes a calculation method for the environmental loss of remanufactured parts based on BP neural network, see figure 1 , figure 2 with image 3 , see the description below:

[0053] 101: Obtain the part under test, use the value of the remanufacturing process parameter that affects the part under test as the test data, and perform normalization processing between -1 and +1 on the test data, and obtain the test after normalization processing data;

[0054] Among them, the remanufacturing process parameters include: spraying distance, water pres...

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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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Application Information

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IPC IPC(8): G06N3/08
Inventor 乌焕涛马宁陈源叶福兴
Owner TIANJIN UNIV
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