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Spare part guarantee probability calculation method and device for mechanical universal parts

A technology of probabilistic calculation and general parts, applied in the direction of calculation, computer-aided design, design optimization/simulation, etc., can solve the problems of excessive procurement and reserve of spare parts, waste, and the interchangeability of general parts is not considered, so as to meet the sufficiency , the effect of reducing waste of resources

Active Publication Date: 2020-01-17
NAVAL UNIV OF ENG PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the conventional method is adopted in the spare parts guarantee of common parts, the interchangeability of common parts will not be considered, resulting in excessive purchase and storage of spare parts, resulting in waste
In the process of overall planning of spare parts for common parts, from the standpoint of equipment users, a key question needs to be answered: "How to evaluate the guarantee effect of spare parts for each equipment when unified supply guarantee?" At present, there is no good solution method to answer the question

Method used

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  • Spare part guarantee probability calculation method and device for mechanical universal parts
  • Spare part guarantee probability calculation method and device for mechanical universal parts
  • Spare part guarantee probability calculation method and device for mechanical universal parts

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Embodiment 1

[0040] like figure 1 As shown, the embodiment of the present invention provides a method for calculating the guarantee probability of spare parts for mechanical general parts, including the following steps:

[0041] S1. Establish a probability matrix dyPs by using the failure probabilities of the common parts of each equipment. The element dyPs(i, j) in the matrix represents the probability of j-1 failures of the common parts of the i-th equipment, 1≤i≤N, 1≤j ≤S+2, N is the number of equipment equipped with common mechanical parts, S is the number of spare parts of general mechanical parts in the spare parts warehouse; the value of matrix element dyPs(i,j) is as follows:

[0042]

[0043] In the formula, T i The planned working time within a guarantee period for the i-th equipment of general-purpose mechanical parts;

[0044] S2, make the current equipment number i=1;

[0045] S3, the other equipment numbers are stored in the array i23, initialize i23 m =m+1, 1≤m≤N-1; i...

Embodiment 2

[0071] like figure 2 As shown, the embodiment of the present invention provides a spare parts support probability calculation device for mechanical general parts, including:

[0072] The probability matrix establishment module is used to establish and calculate the probability matrix dyPs, the element dyPs(i, j) in the matrix represents the probability of j-1 failures of the general parts of the i-th equipment, 1≤i≤N, 1≤j≤ S+2, N is the number of equipment equipped with common mechanical parts, S is the number of spare parts of general mechanical parts in the spare parts warehouse; the value of matrix element dyPs(i,j) is as follows:

[0073]

[0074] In the formula, T i The planned working time within a guarantee period for the i-th equipment of general-purpose mechanical parts;

[0075] The spare parts support probability calculation module is used to sequentially calculate the probability distribution of the sum of common parts failures in other equipment other than t...

Embodiment 3

[0077] An embodiment of the present invention provides a spare parts support probability calculation device for general-purpose mechanical parts, including a memory and a processor;

[0078] The memory is used to store computer software programs;

[0079] The processor is configured to read and execute the computer software program stored in the memory, so as to realize the method for calculating the spare parts guarantee probability of general-purpose mechanical parts as described in Embodiment 1 of the present invention.

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Abstract

The invention relates to a spare part guarantee probability calculation method and device for mechanical universal parts, and belongs to the technical field of equipment spare part guarantee. The method comprises the following steps: firstly, establishing a probability matrix by utilizing the fault probability of each equipment universal part; selecting equipment for arranging universal parts in columns as current equipment in sequence, sequentially calculating probability distribution conditions of the sum of faults of the universal parts in other equipment by utilizing convolution operation,and finally calculating spare part guarantee probability of the current equipment according to the probability distribution conditions of the sum of faults of the universal parts in the other equipment. According to the method, the fault probability of the universal part in different devices is fully considered, the guarantee probability of the current device is calculated by using the fault probability of other equipment, the overall demand of the universal part is planned, and resource waste is reduced while the sufficiency of spare part resources is met.

Description

technical field [0001] The invention relates to the technical field of equipment spare parts support, in particular to a method and device for calculating the probability of spare parts support for general mechanical parts. Background technique [0002] The life law of mechanical parts and other units is often described by normal distribution, such as: slip ring, gearbox, reducer, etc. Mechanical general parts are mechanical parts units that are interchangeable in different types or in the same type of equipment with different specifications. In this paper, the normal distribution is used to describe the life distribution of general-purpose mechanical parts. The life X obeys the normal distribution and is recorded as X~N(μ,σ 2 ), where μ is the mean parameter, σ is the root variance parameter, and the density function of X is [0003] Due to the high versatility of common parts, after comprehensively considering the overall demand of all equipment (including common parts...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F117/06
Inventor 蒋涛徐立张宁李华
Owner NAVAL UNIV OF ENG PLA