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

A technology of probability calculation and common parts, applied in calculation, computer-aided design, design optimization/simulation, etc., can solve problems such as waste, excessive purchase and storage of spare parts, and failure to consider the interchangeability of common parts, etc., to reduce waste of resources , the effect of satisfying the sufficiency

Active Publication Date: 2020-01-31
NAVAL UNIV OF ENG PLA
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  • 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 electromechanical universal parts
  • Spare part guarantee probability calculation method and device for electromechanical universal parts
  • Spare part guarantee probability calculation method and device for electromechanical universal parts

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Embodiment 1

[0040] Such as figure 1 As shown, the embodiment of the present invention provides a method for calculating the guarantee probability of spare parts for electromechanical general-purpose 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 mechanical and electrical general-purpose parts, S is the number of spare parts of mechanical and electrical general-purpose parts in the spare parts warehouse; the value of the matrix element dyPs(i,j) is as follows:

[0042]

[0043] In the formula, Γ() is the gamma function, T i The planned working time within a guarantee period for the i-th equipment of electromechanical general parts;

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

[00...

Embodiment 2

[0071] Such as figure 2 As shown, the embodiment of the present invention provides a spare parts support probability calculation device for electromechanical 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 electromechanical general parts, S is the number of spare parts of electromechanical general parts in the spare parts warehouse; the value of matrix element dyPs(i,j) is as follows:

[0073]

[0074] In the formula, Γ() is the gamma function, T i The planned working time within a guarantee period for the i-th equipment of electromechanical general parts;

[0075] The spare parts support probability calculation module is used to sequentially calculate the probability distribution of the sum o...

Embodiment 3

[0077] An embodiment of the present invention provides a spare parts support probability calculation device for electromechanical general 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 a method for calculating the guarantee probability of spare parts for electromechanical general-purpose 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 electromechanical universal parts, and belongs to the technical field of equipment spare part guarantee. The method comprises the following steps: establishing a probability matrix by utilizing the fault probability of each equipment universal part; selecting equipment for arranging general parts in columns as current equipment in sequence, sequentially calculating probability distribution conditions of the sum of faults of the general 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 general 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 probabilityof other devices, 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 electromechanical general-purpose parts. Background technique [0002] The life law of electromechanical components and other units is often described by Weibull distribution, which is suitable for failures caused by aging, such as: ball bearings, relays, batteries, hydraulic pumps, gears, material fatigue parts, etc. Electromechanical common parts are electromechanical component units that are interchangeable in different types or the same type of equipment with different specifications. In this paper, the Weibull distribution is used to describe the life distribution of electromechanical general-purpose parts. The life X obeys the Weibull distribution and is recorded as X~W(A,B), and the density function of X is [0003] Due to the high versatility of common parts, after comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/27G06F119/04
Inventor 徐立张宁蒋涛李华
Owner NAVAL UNIV OF ENG PLA
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