Modeling method for storage life of electromechanical complete machine products
A storage life and modeling method technology, which is applied in the field of storage life modeling of electromechanical complete products, can solve the problems of accurate evaluation, expensive complete products, difficult storage life of complete products, etc., and achieve high confidence and cost saving Effect
Active Publication Date: 2018-10-02
CASIC DEFENSE TECH RES & TEST CENT
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Problems solved by technology
Because the whole machine product is very expensive, there is little potential to increase the sample size. In the case of small samples, it is difficult to accurately evaluate the storage life of the whole machine product by using the data of the life test for life distribution fitting and parameter evaluation.
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[0045] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0046] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are to distinguish two entities with the same name but different parameters or parameters that are not the same, see "first" and "second" It is only for the convenience of expression, and should not be construed as a limitation on the embodiments of the present invention, which will not be described one by one in the subsequent embodiments.
[0047] Such as figure 1 As shown, is a schematic flowchart of an embodiment of the storage life modeling method for electromechanical complete machine products provided by the present invention.
[0048] The storage life modeling method of the electromechanical compl...
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The invention discloses an electromechanical whole machine product shelf-life modeling method, which comprises the steps of based on a competition failure model, establishing a reliability model of a whole machine product; letting Weibull life distribution be life distribution of the electromechanical whole machine product, and obtaining a failure rate function of various components of the electromechanical whole machine product; introducing the failure rate function of the components into the reliability model of the whole machine product, and obtaining a reliability function of the electromechanical whole machine product based on the competition failure model; combining the reliability function based on the competition failure model and the reliability function based on the Weibull life distribution, and obtaining a feature life function of the electromechanical whole machine product; and combining the life distribution of a plurality of main components of the electromechanical whole machine product and the feature life function of the electromechanical whole machine product, and obtaining a life distribution model of the electromechanical whole machine product. The electromechanical whole machine product shelf-life modeling method provided by the invention can achieve accurate evaluation of the shelf-life of the electromechanical whole machine product.
Description
technical field [0001] The invention relates to the technical field of reliability testing and evaluation, in particular to a storage life modeling method for electromechanical complete machine products. Background technique [0002] The storage life is an important combat technical index stipulated in the equipment contract (or mission statement). In order to quantitatively allocate, predict and evaluate the storage life index of the complete machine product, it is first necessary to determine its life distribution model and parameter estimation. Because the whole machine product is very expensive, there is little potential to increase the sample size. In the case of small samples, it is difficult to accurately evaluate the storage life of the whole machine product by using the data of the life test for life distribution fitting and parameter evaluation. Contents of the invention [0003] In view of this, the object of the present invention is to propose a storage life m...
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IPC IPC(8): G06F17/50
CPCG16Z99/00
Inventor 张生鹏李宏民张文伟
Owner CASIC DEFENSE TECH RES & TEST CENT