CN108563741A - The environmental damage sensitive parameter screening technique of more performance parameter products - Google Patents
The environmental damage sensitive parameter screening technique of more performance parameter products Download PDFInfo
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- CN108563741A CN108563741A CN201810325736.4A CN201810325736A CN108563741A CN 108563741 A CN108563741 A CN 108563741A CN 201810325736 A CN201810325736 A CN 201810325736A CN 108563741 A CN108563741 A CN 108563741A
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Abstract
The invention discloses a kind of environmental damage sensitive parameter screening techniques of more performance parameter products.By based on parameter detecting data of the product under a certain environment, departure degree statistical analysis of the parameter relative to original value after each parameter detecting data are carried out the dimensionless conversion of energy characterization parameter degree of injury and converted successively, the environmental damage sensitive parameter according to departure degree size screening product.This method can Effective selection go out damage sensitive parameter of the product under a certain environment, have simple and practicable, the good advantage of universality.
Description
Technical field
The present invention relates to the products with multinomial performance parameter, and in particular to the environmental damage with more performance parameter products
Sensitive parameter screens.
Background technology
The environmental damage sensitive parameter of a certain product refers to more sensitive to product local environment, can extend and table at any time
Reveal the parameter of apparent derogatory behaviour.The analysis of environmental damage sensitive parameter is the basis of Product environment damage research, has grasped production
Damage sensitive parameter of the product under a certain environment can further carry out product performance degradation rule in the present context and longevity
Evaluation studies are ordered, are of great significance.
Currently, the environmental damage sensitive parameter of more performance parameter products is mainly according to each parameter in same environment, identical
It is determined relative to the variation degree size of initial value under time, it is believed that the maximum parameter of variation degree is the environment under the environment
Sensitive parameter is damaged, calculation formula is as shown in Equation 1.
︱ Xi-X0︱/X0× 100% [1]
In formula, XiFor the detected value of parameter at a time, X0For the initial detecting value of parameter.
There are two disadvantages for this method：
First, the maximum parameter of variation degree may not be the maximum parameter of degree of injury, itself qualification of this and parameter refers to
The size for marking range is related, using the parameter that this method is found out may be the maximum parameter of variation degree rather than degree of injury most
Big parameter；
Second is that this method determines parameter to environment generally by the Parameters variation degree size that comparison is sometime put
Sensitivity.If each parameter is in monotone variation and between each other without intersection, as shown in Figure 1, this is to analogy in this case
Method is feasible.If parameter is not instead of in monotone variation trend, there is in fluctuating change and between each other crossover phenomenon, such as scheme
Shown in 2, in this case, the variation degree which parameter which is just unable to judge accurately is maximum.
Invention content
The object of the present invention is achieved like this：
Assuming that a certain product has m parameter, respectively X1、X2、…、Xm, under a certain environmental condition, each parameter has n
A and time t1、t2、…、tnCorresponding detected value now will filter out environmental damage sensitive parameter from this m parameter.It ties first
Closing parameter index requires the dimensionless that each parameter detecting data of product are carried out with energy characterization parameter degree of injury to convert, secondly to each
Parameter makees the departure degree statistical analysis relative to original value after conversion, and the environment of product is screened according to parameter drift-out degree size
Damage sensitive parameter.This method successively by include the following steps carry out：
1, performance parameter dimensionless converts
According to the index request of each performance parameter, the dimensionless that energy characterization parameter degree of injury is carried out to parameter converts, makes
Has comparativity between dimension and the different parameter of the order of magnitude.The index form of parameter is different, dimensionless method for transformation
It is different.
(1) single upper limit type index
Dimensionless processing method with single upper limit type index parameter is as shown in Equation 2.
In formula, XiFor the detection numerical value of parameter ith, XminFor the minimum value in all detected values of the parameter, XThe upper limitFor ginseng
Several qualified index upper limit values.
xiIt is bigger, indicate corresponding XiCloser to the qualification index upper limit, i.e. degree of injury is bigger, Internal meaning such as Fig. 3 institutes
Show.
(2) single lower limit
Dimensionless processing method with single lower limit type index parameter is as shown in Equation 3.
In formula, XiFor the detection numerical value of parameter ith, XmaxFor the maximum value in all detected values of the parameter, XLower limitFor ginseng
Several qualified index lower limiting values.
xiIt is bigger, indicate corresponding XiCloser to qualification index lower limit, i.e. degree of injury is bigger, Internal meaning such as Fig. 4 institutes
Show.
(3) bound interval type index
Dimensionless processing method with bound interval type index parameter is as shown in Equation 4.
In formula, XiFor the detection numerical value of parameter ith, XThe upper limitFor the qualified index upper limit value of parameter, XLower limitFor the conjunction of parameter
Lattice index lower limiting value.
xiIt is bigger, indicate corresponding XiMore deviate qualified index intermediate value, i.e. degree of injury is bigger, Internal meaning such as Fig. 5 institutes
Show.
2, departure degree calculates
By the dimensionless number of the energy characterization parameter degree of injury after conversion based on, according to formula 5, parameter is being tested
It is calculated in the process relative to the departure degree of initial value.
In formula, δ is departure degree, and n is the detection number of parameter during the test, xiIt is passed through for parameter ith detected value
Cross nondimensionalization treated value, x0For the original value of parameter before the test by nondimensionalization treated value.
Using departure degree δ as the foundation of parameter of measurement degree of injury size.If the departure degree of a certain parameter calculates number
Value is all big compared to other parameters, then shows that the environmental damage degree of the parameter is maximum, be the ring of product under this environment
Sensitive parameter is damaged in border.
The invention has the advantages that：
For this method when carrying out dimensionless conversion to parameter, parameter is to the characterization of degree of injury after having taken into account conversion；Right
When the degree of injury of different parameters compares and analyzes, all properties detection data of parameter is fully utilized, rather than is only used
The detection data sometime put.Accordingly, with respect to previous environmental damage sensitive parameter screening technique, this method can be more accurate
Really, the environmental damage sensitive parameter of multi-parameter product is effectively filtered out.
Description of the drawings
Fig. 1 is performance parameter in monotone variation and without intersection schematic diagram；
Fig. 2 is performance parameter in fluctuating change and there is intersection schematic diagram；
Fig. 3 is single upper limit type index parameter degree of injury xiInternal meaning；
Fig. 4 is single lower limit type index parameter degree of injury xiInternal meaning；
Fig. 5 is bound type index parameter degree of injury xiInternal meaning.
Specific implementation mode
The present invention is specifically described below by embodiment, it is necessary to, it is noted that following embodiment is served only for pair
The present invention is further detailed, and should not be understood as limiting the scope of the invention, the person skilled in the art in the field
Some nonessential modifications and adaptations can be made to the present invention according to foregoing invention content.
Embodiment
Environmental damage sensitive parameter screening of certain type mechanical gyro under single temperature stress：
There are four Specifeca tion speeifications for the type mechanical gyro, respectively unlock error, contact initial angle, vertical drift and water
Flat drift, the index request of each parameter are as shown in table 1.
Each parameter index requirement of 1 mechanical gyro of table
| Performance parameter | Unlock error/° | Contact initial angle/° | Vertical drift/° | Horizontal drift/° |
| Index request | ≤0.5 | 4.2~6.0 | - 0.6~-1.9 | 0.16~-0.9 |
In order to filter out environmental damage sensitive parameter of the gyro under single temperature stress, it is 75 to devise gyro in temperature
Environmental test at DEG C respectively detects the original value of each parameter before experiment, the inspection of each parameter during the test
It is 8 times to survey number, as shown in table 2.
Each parameter detecting result of 2 mechanical gyro of table
| Test period/d | Unlock error/° | Contact initial angle/° | Vertical drift/° | Horizontal drift/° |
| 0 | 0.14 | 5.5 | -1.32 | -0.4 |
| 14 | 0.14 | 4.84 | -1.2 | -0.28 |
| 28 | 0.16 | 5.38 | -0.92 | -0.22 |
| 42 | 0.26 | 5.48 | -1.14 | -0.28 |
| 56 | 0.32 | 5.4 | -0.8 | -0.3 |
| 84 | 0.28 | 5.44 | -0.64 | -0.4 |
| 112 | 0.18 | 5.44 | -0.62 | -0.3 |
| 140 | 0.16 | 5.04 | -0.56 | -0.36 |
| 168 | 0.12 | 5.34 | -0.7 | -0.32 |
1, the dimensionless conversion of performance parameter
As can be seen from Table 1, the index for unlocking error parameter is single upper limit type, and the index of excess-three parameter is bound
Interval type.Therefore, being carried out respectively to each parameter of listed mechanical gyro in table 2 according to formula 2 and formula 4 can characterization parameter damage journey
The dimensionless conversion of degree calculates, and the results are shown in Table 3.
Each parameter dimensionless conversion results of 3 mechanical gyro of table
| Test period/d | Unlock error/% | Contact initial angle/% | Vertical drift/% | Horizontal drift/% |
| 0 | 5.26 | 44.44 | 10.77 | 5.66 |
| 14 | 5.26 | 28.89 | 7.69 | 16.98 |
| 28 | 10.53 | 31.11 | 50.77 | 28.30 |
| 42 | 36.84 | 42.22 | 16.92 | 16.98 |
| 56 | 52.63 | 33.33 | 69.23 | 13.21 |
| 84 | 42.11 | 37.78 | 93.85 | 5.66 |
| 112 | 15.79 | 37.78 | 96.92 | 13.21 |
| 140 | 10.53 | 6.67 | 106.15 | 1.89 |
| 168 | 0 | 26.67 | 84.62 | 9.43 |
2, departure degree counts
Table 3 gives mechanical gyro in different tests time, the magnitude size of the degree of injury of each parameter.In order to find out
The maximum parameter of degree of injury during experiment, each parameter values in table 3 are deviateed respectively according to formula 5 degree of original value into
Row calculates.
The departure degree calculating process for such as unlocking error parameter is：
It can similarly obtain, the departure degree calculated value of contact starting angular dimensions is 297.5, the deviation of vertical drift parameter
Degree calculated value is 4242.6, and the departure degree calculated value of horizontal drift parameter is 113.9.
3, conclusion
By comparison as can be seen that the departure degree of vertical drift parameter is much larger than its excess-three parameter, illustrate vertically to float
It is maximum to move the degree of injury shown during the test, i.e., the parameter is mechanical gyro under single temperature stress environment
Environmental damage sensitive parameter.
Claims (4)
- The environmental damage sensitive parameter screening technique of the product of performance parameter more than 1., it is characterised in that：Include the following steps：A certain product has m parameter, and under a certain environmental condition, each parameter has n and time t1、t2、…、tnIt is corresponding Detected value；When calculating the degree of injury of a certain parameter, being carried out first to the detection data of parameters can characterization parameter degree of injury Nondimensionalization processing；By treated dimensionless number based on, departure degree calculating is carried out to each parameter respectively according to following formula：In formula, δ is departure degree, and n is the detection number of parameter during the test, xiIt is parameter ith detected value by immeasurable Guiding principleization treated value, x0For the original value of parameter before the test by nondimensionalization treated value, wherein n be natural number.Using departure degree δ as the foundation of parameter of measurement degree of injury size, if the departure degree evaluation phase of a certain parameter It is all bigger than other parameters, then show that the environmental damage degree of the parameter is maximum, is the environment damage of product under this environment Hinder sensitive parameter.
- 2. the environmental damage sensitive parameter screening technique of more performance parameter products as described in claim 1, it is characterised in that：It is right It is in the dimensionless method of single upper limit type index parameter：In formula, XiFor the detection numerical value of parameter ith, XminFor the minimum value in all detected values of the parameter, XThe upper limitFor the conjunction of parameter Lattice index upper limit value.
- 3. the environmental damage sensitive parameter screening technique of more performance parameter products as described in claim 1, it is characterised in that：It is right It is in the dimensionless method of single lower limit type index parameter：In formula, XiFor the detection numerical value of parameter ith, XmaxFor the maximum value in all detected values of the parameter, XLower limitFor the conjunction of parameter Lattice index lower limiting value.
- 4. the environmental damage sensitive parameter screening technique of more performance parameter products as described in claim 1, it is characterised in that：It is right It is in the dimensionless method with bound type index parameter：In formula, XiFor the detection numerical value of parameter ith, XThe upper limitFor the qualified index upper limit value of parameter, XLower limitFor the qualified index of parameter Lower limiting value.
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Citations (5)
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| CN101975920A (en) * | 2010-09-26 | 2011-02-16 | 中兴通讯股份有限公司 | Detection method and system of electronic device reliability |
| CN103258101A (en) * | 2013-05-23 | 2013-08-21 | 北京航空航天大学 | Method for determining characterization parameters of simulation circuit welding spot mechanical creep failure mechanism |
| CN105717384A (en) * | 2015-05-11 | 2016-06-29 | 北京圣涛平试验工程技术研究院有限责任公司 | Component sensitive parameter degeneration measurement method |
| CN106202643A (en) * | 2016-06-28 | 2016-12-07 | 西安航天动力研究所 | Method analyzed by a kind of three sections of circular arc primitive corrugated tubes based on the sequence of variance sensitivity |
| CN107886161A (en) * | 2017-11-03 | 2018-04-06 | 南京航空航天大学 | A kind of global sensitivity analysis method for improving Complex Information System efficiency |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975920A (en) * | 2010-09-26 | 2011-02-16 | 中兴通讯股份有限公司 | Detection method and system of electronic device reliability |
| CN103258101A (en) * | 2013-05-23 | 2013-08-21 | 北京航空航天大学 | Method for determining characterization parameters of simulation circuit welding spot mechanical creep failure mechanism |
| CN105717384A (en) * | 2015-05-11 | 2016-06-29 | 北京圣涛平试验工程技术研究院有限责任公司 | Component sensitive parameter degeneration measurement method |
| CN106202643A (en) * | 2016-06-28 | 2016-12-07 | 西安航天动力研究所 | Method analyzed by a kind of three sections of circular arc primitive corrugated tubes based on the sequence of variance sensitivity |
| CN107886161A (en) * | 2017-11-03 | 2018-04-06 | 南京航空航天大学 | A kind of global sensitivity analysis method for improving Complex Information System efficiency |
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