CN113111444B - System and method for acquiring actual damage design change list - Google Patents
System and method for acquiring actual damage design change list Download PDFInfo
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- CN113111444B CN113111444B CN202110495165.0A CN202110495165A CN113111444B CN 113111444 B CN113111444 B CN 113111444B CN 202110495165 A CN202110495165 A CN 202110495165A CN 113111444 B CN113111444 B CN 113111444B
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- 238000013461 design Methods 0.000 title claims abstract description 199
- 230000006378 damage Effects 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000012795 verification Methods 0.000 claims abstract description 15
- 230000008676 import Effects 0.000 claims abstract description 14
- 238000012216 screening Methods 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 claims abstract description 6
- 238000011161 development Methods 0.000 claims description 8
- 230000001186 cumulative effect Effects 0.000 claims description 3
- 230000001010 compromised effect Effects 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000013178 mathematical model Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000007728 cost analysis Methods 0.000 description 1
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Abstract
The invention discloses a method for acquiring an actual damage design change list, which comprises the following steps: sorting the design change items from high to low according to the cost increment of the single vehicle, screening and listing n design change items of which the accumulated cost of the design change items accounts for A% of the total cost of the design change items according to the cost increment from high to low to form a design change list of which the cost index actually damages; calculating each design change import period influence value D, comparing each design change import period influence value D with a period delta D of the sample car for test verification, screening and listing design change items corresponding to D > delta D, and forming a period index actual damage design change list; determining a total actual damage design change list according to the cost index actual damage design change list and the period index actual damage design change list. The method can accurately acquire the actual damage design change list, and is beneficial to later-stage design change modeling.
Description
Technical Field
The invention relates to the technical field of automobile design, in particular to a system and a method for acquiring an actual damage design change list.
Background
With the development of automobile technology and the continuous upgrading of consumer demands, automobile companies can change the design in different levels and types from the development stage of projects to the product market. Effective reissue prevention of design changes is one of the most common approaches; but in the process of thinking against the law, a great deal of manpower investment is needed to find the cause.
At present, no relevant mathematical model is established for design change to carry out comprehensive evaluation, the evaluation of a design change scheme is a complex technical and economic system, the generation reason of the design change is complex, a database is huge, and as the premise of establishing the mathematical model of the design change, the acquisition of an actual damaged design change list is particularly important, and a set of acquisition mode which can accurately reflect the actual situation of the design change and actually damage the design change list needs to be developed.
Disclosure of Invention
The invention aims to provide a system and a method for acquiring an actual damage design change list.
To achieve the object, the present invention provides a system for acquiring a change list of actual damage design, comprising: the system comprises a cost index actual damage design change acquisition module, a period index actual damage design change acquisition module and an actual damage design change list acquisition module;
the cost index actual damage design change acquisition module is used for sorting the design change items from high to low according to the cost increment of the single vehicle, screening and listing n design change items of which the accumulated cost of the design change items accounts for A% of the total cost of the design change items according to the cost increment from high to low, and forming a cost index actual damage design change list;
the period index actual damage design change acquisition module is used for verifying time Y on the sample car according to each scheme after design changetCalculating the influence value D of each design change import cycle at the time Y of verification of the scheme without corresponding design change on the sample car;
the period index actual damage design change acquisition module is further used for comparing each design change import period influence value D with a period delta D of the sample car for test verification, screening and listing design change items corresponding to D > delta D, and forming a period index actual damage design change list;
the actual damage design change list acquisition module is used for determining a total actual damage design change list according to the cost index actual damage design change list and the period index actual damage design change list.
The invention has the beneficial effects that:
this patent adopts the mode of establishing mathematical model, and accurate efficient discerns actual harm design change, utilizes the actual harm design change of setting up other to establish design change model, utilizes this model can adopt concentrated resource focus core problem in actual production, and it is big or small to grab, will fall to specific example to the backstep of actual harm design change, can use improvement measure fast to concrete project, improves the efficiency of design change, reduces the cost of design change.
Drawings
FIG. 1 is a schematic structural view of the present invention;
the system comprises a cost index actual damage design change acquisition module, a period index actual damage design change acquisition module and a period index actual damage design change list acquisition module, wherein the cost index actual damage design change acquisition module, the period index actual damage design change acquisition module and the period index actual damage design change list acquisition module are arranged in sequence.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
as shown in fig. 1, the actual damage design change list acquiring system includes a cost index actual damage design change acquiring module 1, a period index actual damage design change acquiring module 2, and an actual damage design change list acquiring module 3;
the cost index actual damage design change acquisition module 1 is used for sorting the design change items from high to low according to the cost increment of a single vehicle, screening and listing n design change items with the accumulated cost of the design change items accounting for 80% of the total cost of the design change items according to the cost increment from high to low to form a cost index actual damage design change list, realizing the rapid identification of the items with large cost change caused by the change, avoiding the cost analysis of all the design change items and improving the identification efficiency;
the period index actual damage design change acquisition module 2 is used for verifying the time Y on the sample car according to each scheme after the design changetCalculating the influence value D of each design change import period at the time Y of verification of the scheme without corresponding design change on the sample car;
the period index actual damage design change acquisition module 2 is further configured to compare each design change import period influence value D with a period Δ D of test verification performed on the sample car, and screen and list design change items corresponding to D > Δ D to form a period index actual damage design change list, so as to realize rapid identification of items of which the design change import period spans 2 or more sample cars;
the actual damage design change list obtaining module 3 is configured to determine a total actual damage design change list according to the cost index actual damage design change list and the period index actual damage design change list.
In the technical scheme, the development project has m design change projects, the cost increment Delta C of the single vehicle is sequenced from high to low according to the design change projects, and the set change with the largest cost increment is defined as X1Corresponding to a cost increment of Δ C1After sorting according to cost increment, the design change item set is X ═ X1,X2,X3,…Xi,…,XmA corresponding cost set Δ C ═ Δ C1,ΔC2,ΔC3,…ΔCi,…,ΔCm}；
If it is used
Then X1To XnThe design change list is actually compromised for cost indicators.
In the above-described embodiment, each design change introduction period influence value D is the time Y at which each design changed plan is verified on the prototype cart-time Y of verification on the sample car of the scheme of the respective design change.
In the above technical solution, the actual damage design change list obtaining module 3 obtains a total actual damage design change list by merging the cost index actual damage design change list and the period index actual damage design change list.
In the above technical solution, the accumulated cost of the design change item is an accumulated cost obtained by sorting the variation of the cost of the bicycle caused by the design change from high to low and then adding the variation one by one.
In the above technical solution, the total cost of the design change project is the sum of the cost variation generated by all design changes on the development project.
In the technical scheme, m design changes of the development project are selected, and X is screened out from the cost index1To XnItem design change to cost index actual damage deviceCounting a change list; considering from the period index, when D is more than delta D, screening out XjTo XkIf the item design change is a periodic index, the actual damage to the design change list is { X }1…Xn}U{Xj…XkAnd the method is a total actual damage design change list, realizes the items screened by combining the two indexes, ensures the integrity of the actual damage design change list and ensures the accuracy of subsequent design change modeling.
A method for acquiring an actual damage design change list is characterized by comprising the following steps:
step 1: sorting the design change items from high to low according to the cost increment of the single vehicle, screening and listing n design change items according to the cost increment from high to low, wherein the cumulative cost of the design change items accounts for 80% of the total cost of the design change items, and forming a design change list with the cost indexes actually damaged;
step 2: time Y verified on the prototype vehicle according to each changed designtCalculating the influence value D of each design change import period at the time Y of verification of the scheme without corresponding design change on the sample car;
the period index actual damage design change acquisition module 2 is further configured to compare each design change import period influence value D with a period Δ D of the sample car for test verification, and screen and list design change items corresponding to D > Δ D to form a period index actual damage design change list;
and step 3: determining a total actual damage design change list according to the cost index actual damage design change list and the period index actual damage design change list.
In the step 3, the cost index actual damage design change list and the period index actual damage design change list are merged to obtain a total actual damage design change list.
Taking a certain production item A as an example, 115 items of design change are generated in total before production of the final quantity, 14 items of cost increase are involved, and 9 items of cycle change are involved.
Identifying according to the cost dimension, screening 6 items as actual damage setting changes according to the cumulative percentage of 80 percent, and showing in the following table;
and identifying according to a period dimension, setting the verification period of each sample vehicle as 60 days, and when the introduced period influence value D exceeds 60 days, including the actual damage setting, as shown in the following table.
To sum up, 7 actual lesion set variables were selected as the object of the backstepping.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (10)
1. A kind of actual damage design change list acquisition system, characterized by that: the system comprises a cost index actual damage design change acquisition module (1), a period index actual damage design change acquisition module (2) and an actual damage design change list acquisition module (3);
the cost index actual damage design change acquisition module (1) is used for sorting the design change items from high to low according to the cost increment of a single vehicle, screening and listing n design change items of which the cumulative cost of the design change items accounts for A% of the total cost of the design change items according to the cost increment from high to low, and forming a cost index actual damage design change list;
the period index actual damage design change acquisition module (2) is used for verifying time Y on the sample car according to each scheme after design changetCalculating the influence value D of each design change import period at the time Y of verification of the scheme without corresponding design change on the sample car;
the period index actual damage design change acquisition module (2) is also used for comparing each design change import period influence value D with a period delta D of a sample car for test verification, screening and listing design change items corresponding to D & gt delta D, and forming a period index actual damage design change list;
and the actual damage design change list acquisition module (3) is used for determining a total actual damage design change list according to the cost index actual damage design change list and the period index actual damage design change list.
2. The actual damage design change list acquisition system according to claim 1, wherein: the development project has m design change projects, the single vehicle cost increment delta C is sequenced from high to low according to the design change projects, and the design change project with the largest cost increment is defined as X1Corresponding to a cost increment of Δ C1After sorting according to cost increment, the design change item set is X ═ X1,X2,X3,…Xi,…,XmA corresponding cost set Δ C ═ Δ C1,ΔC2,ΔC3,…ΔCi,…,ΔCm}；
If it is not
Then X1To XnThe design change list is actually compromised for cost indicators.
3. The actual damage design change list acquisition system according to claim 1, wherein: each design change import cycle influence value D is the time Y for verification of each design changed plan on the prototype cart-time Y of verification on the sample car of the scheme of the respective design change.
4. The actual damage design change list acquisition system according to claim 1, wherein: and the actual damage design change list acquisition module (3) is used for solving the union of the cost index actual damage design change list and the period index actual damage design change list to obtain a total actual damage design change list.
5. The actual damage design change list acquisition system according to claim 1, wherein: the A% is 80%.
6. The actual damage design change list acquisition system according to claim 1, wherein: the accumulated cost of the design change items is obtained by sorting the variation of the cost of the single vehicle caused by the design change from high to low and then adding the variation one by one.
7. The actual damage design change list acquisition system according to claim 1, wherein: the total cost of the design change project is the sum of the cost variation generated by all the design changes on the development project.
8. The actual damage design change list acquisition system according to claim 1, wherein: the development project has m design changes, and X is screened out from the cost index1To XnItem design change to cost index actual damage design change list; considering from the period index, when D is more than delta D, screening out XjTo XkIf the item design change is a periodic index, the actual damage to the design change list is { X }1…Xn}U{Xj…XkThe total actual damage design change list.
9. A method for acquiring an actual damage design change list is characterized by comprising the following steps:
step 1: sorting the design change items from high to low according to the cost increment of the single vehicle, screening and listing n design change items according to the cost increment from high to low, wherein the accumulated cost of the design change items accounts for A% of the total cost of the design change items, and forming a cost index actual damage design change list;
step 2: time Y verified on the prototype vehicle according to each changed designtCalculating the influence value D of each design change import period at the time Y of verification of the scheme without corresponding design change on the sample car;
comparing each design change import period influence value D with a period delta D of the sample car for test verification respectively, screening and listing design change items corresponding to D > delta D, and forming a period index actual damage design change list;
and step 3: determining a total actual damage design change list according to the cost index actual damage design change list and the period index actual damage design change list.
10. The actual damage design change list acquisition method according to claim 9, wherein: in the step 3, the cost index actual damage design change list and the period index actual damage design change list are merged to obtain a total actual damage design change list.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10187818A (en) * | 1996-12-24 | 1998-07-21 | Hitachi Ltd | Design verification time deciding method for mass production product and design planning support device |
| JP2005085179A (en) * | 2003-09-11 | 2005-03-31 | Matsushita Electric Ind Co Ltd | Design change management system |
| WO2014155840A1 (en) * | 2013-03-26 | 2014-10-02 | 株式会社日立製作所 | Device, method, and program for predicting design modification effect |
| CN109978502A (en) * | 2019-03-21 | 2019-07-05 | 广州翔实工程咨询有限公司 | Automatic budget method, system and computer storage medium are changed in engineering design |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8060347B2 (en) * | 2008-07-29 | 2011-11-15 | Mentor Graphics Corporation | Complexity management for vehicle electrical/electronic architecture design |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10187818A (en) * | 1996-12-24 | 1998-07-21 | Hitachi Ltd | Design verification time deciding method for mass production product and design planning support device |
| JP2005085179A (en) * | 2003-09-11 | 2005-03-31 | Matsushita Electric Ind Co Ltd | Design change management system |
| WO2014155840A1 (en) * | 2013-03-26 | 2014-10-02 | 株式会社日立製作所 | Device, method, and program for predicting design modification effect |
| JP2014191450A (en) * | 2013-03-26 | 2014-10-06 | Hitachi Ltd | Design change influence prediction device, method and program |
| CN109978502A (en) * | 2019-03-21 | 2019-07-05 | 广州翔实工程咨询有限公司 | Automatic budget method, system and computer storage medium are changed in engineering design |
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