CN111191323A

CN111191323A - Design change control method

Info

Publication number: CN111191323A
Application number: CN201911353232.4A
Authority: CN
Inventors: 年丽云; 刘俊堂; 吕潇超; 赵攀; 郑党党; 周小波
Original assignee: Xian Aircraft Design and Research Institute of AVIC
Current assignee: Xian Aircraft Design and Research Institute of AVIC
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-05-22
Anticipated expiration: 2039-12-24
Also published as: CN111191323B

Abstract

The invention relates to a design change control method, and belongs to the field of airplane products, collaborative development and configuration control. The method comprises the following steps: receiving the serial number of the component to be changed and the effective frame number range of the change sent by a designer; acquiring the current shelf range of the components to be changed and the current shelf range of the ECD of the configuration of the design module from the stored design module; updating the number or the version number of the component to be changed according to the current frame range of the component to be changed and the effective frame range of the change; and updating the number or version number of the ECD according to the current frame range of the ECD and the effective frame range of the change.

Description

Design change control method

Technical Field

The invention relates to a design change control method, and belongs to the field of airplane products, collaborative development and configuration control.

Background

At present, a simplified configuration management mode is gradually adopted in aircraft development, the number of shelves validity information originally distributed on parts is moved to the design module level, and components under the module are not marked with any number of shelves validity any more. However, when the design module and the component are changed, it is considered that different version validity mechanisms are actually adopted, for example, the latest version is valid or a plurality of versions are valid, so that the change control of the design module and the component thereof is greatly different. In addition, design module and component modification control, while some patented efforts have been made, lacks the definition of derivation rules for the design module and component numbering and versions.

Disclosure of Invention

The purpose of the invention is as follows: from the perspective of engineering application, the problem that the state of a design module is constantly changed and the configuration of airplanes of different numbers of frames is dynamically changed due to frequent engineering change of the design module during model development is solved, the consistency of configuration information of a design end and a manufacturing end of each airplane is maintained, and the complexity of configuration control is reduced.

The invention provides a design change control method, which comprises the following steps:

receiving the serial number of the component to be changed and the effective frame number range of the change sent by a designer;

acquiring the current shelf range of the components to be changed and the current shelf range of the ECD of the configuration of the design module from the stored design module;

updating the number or the version number of the component to be changed according to the current frame range of the component to be changed and the effective frame range of the change;

and updating the number or version number of the ECD according to the current frame range of the ECD and the effective frame range of the change.

Further, updating the number or version number of the component to be changed according to the current shelf range and the effective shelf range of the current change, including:

comparing the current rack frequency range of the component to be changed with the inclusion relationship of the current rack frequency range to be changed;

if the effective shelf range of the change contains the current shelf range of the component to be changed, the component to be changed is subjected to version change to obtain a new version number;

if the current frame range of the component to be changed really comprises the effective frame range of the change, or if the effective frame range of the change and the current frame range of the component to be changed have intersection and are not subsets, changing the number of the component to be changed to obtain a new number;

and if the effective frame range of the change is not intersected with the current frame range of the component to be changed, the component to be changed is not allowed to be changed.

Further, updating the serial number or version number of the ECD according to the current shelf range of the ECD and the effective shelf range of the change, further comprising:

if the effective frame range of the change contains the current frame range of the ECD, changing the version of the ECD to obtain a new version number with the validity range being the current frame range;

if the current frame range of the ECD really comprises the effective frame range of the change, changing the number of the ECD to obtain a new number, wherein the effective range of the ECD with the new number is the effective frame range of the change; the validity range of the serial number ECD before the change is a complement of the effective ranking range of the change in the current ranking range of the ECD;

and if the effective frame range of the change and the current frame range of the ECD are intersected and not subsets, changing the number of the ECD to obtain a new number, wherein the validity range of the ECD with the new number is the intersection of the effective frame range of the change and the current frame range of the ECD, and the validity range of the ECD with the number before the change is a complement of the validity range of the ECD with the new number in the current frame range of the ECD.

Further, after updating the number or version number of the component to be changed according to the current rack range of the component to be changed and the effective rack range of the change, the method further includes:

and updating the number or the version number of the assembly layer by layer according to the number or the version number of the component to be changed.

Further, for the assembly of the ith layer, i is the number of layers from the component to be modified to the assembly, i is an integer from 1 to n, and n is the number of layers from the component to be modified to the assembly top layer; according to the number or the version number of the component to be changed, the number or the version number of the assembly is updated layer by layer, and the method comprises the following steps:

when i is smaller than or equal to n, acquiring the number, the version number and the current frame range of the ith layer assembly;

comparing the current rack frequency range of the ith layer assembly with the inclusion relation of the current rack frequency range changed at this time;

if the effective shelf range of the current change contains the current shelf range of the ith layer assembly, performing version change on the ith layer assembly to obtain a new version number, and stopping updating the subsequent layer assembly;

if the current frame number range of the ith layer assembly really comprises the frame number range which is changed into effect at this time, or if the frame number range which is changed into effect at this time and the current frame number range of the ith layer assembly have intersection and are not subsets, changing the number of the ith layer assembly to obtain a new number;

and if the effective frame range of the current change is not intersected with the current frame range of the ith assembly, the ith assembly is not allowed to be changed.

Further, the number of the ECD includes a horizontal number and a vertical number, and the number change rule of the ECD includes:

if the new validity range of the ECD contains positive infinity, changing the transverse number of the ECD;

if the new validity range of EDC does not contain positive infinity, then the longitudinal number of ECD is changed.

Further, the number change rule of the component to be changed includes:

when the component to be changed is a single piece or a left piece of a symmetrical piece, the last 3 bits of the serial number of the component to be changed are derived according to an odd number sequence mode;

when the component to be changed is the right part of the symmetrical part, the last 3 bits of the serial number of the component to be changed are derived according to an even number sequence mode.

Further, the change rule of the version number includes:

the components to be changed and the ECD are derived according to the alphabetical order of the version;

and when a new version is generated, the old version is invalidated.

The invention has the advantages that: under the simplified configuration management mode, the design module adopting the latest effective mechanism and the change control of the components of the design module are comprehensively explained, the change control method and the step definition are included, the version and the number derivation rule of the design module and the components are provided, the fishbone-shaped numbering rule of the design module is provided for the first time, the change domination of the design module is realized, the quick, efficient and clear control of the design module and the components at the development stage is ensured, and therefore the consistency of configuration information at the design end and the manufacturing end is effectively maintained, and the engineering application reality is met.

Drawings

FIG. 1 is a flow chart of a modification control calculation logic.

FIG. 2 is a flow diagram of a component change calculation logic.

Figure 3 is a flow diagram of ECD change calculation logic.

Fig. 4 is a diagram illustrating ECD numbering rules.

FIG. 5 is a diagram illustrating an embodiment of ECD numbered fish spear derivation rules.

FIG. 6 is a diagram illustrating component numbering rules.

Fig. 7 is a diagram illustrating initial information of a design module.

FIG. 8 is a schematic diagram of design module information after a first change.

FIG. 9 is a diagram illustrating design module information after a second modification.

Fig. 10 is a schematic diagram of design module information after the third modification.

Detailed description of the invention

The Design module product structure defined in the invention is divided into an upper layer and a lower layer, wherein the upper layer is defined as ECD (configuration of Design module), is a Design module configuration, is used for recording each change of the Design module and configuration information of the Design module, is a management node, and the lower layer is a component layer, and organizes a Design data example according to the relation of assembly-component-part, and is a specific Design model.

When the method is adopted, the design module and the components thereof adopt the latest effective mechanism, namely, after the new version of the design module and the components is released, the old version of the design module and the components thereof are automatically invalidated; the design module marks the effectiveness of the rank (specifically embodied in the effectiveness of the mark of the rank on the ECD layer), the component does not mark any rank information, the effectiveness of the rank of the component is calculated by a computer system, and the principle is as follows: the shelf effectiveness of the components is equal to the sum of the shelf effectiveness of the design modules where the components are located. When the product is designed, the initial effectiveness of the design module is set as a set V1 {1, 2, 3, 4 … … } (the set V1 and all sets in the invention are positive integer sets) by the computer system, a new version or a new numbered design module is generated by design change, and the initial effectiveness is generated by change calculation. The invention is used in model development stage and takes the module as the center configuration management mode, the change control to the design module and its spare part is shown as figure 1, 2, 3, the method of the specific design change includes:

determining a part assembly needing to be changed as a part assembly to be changed, calculating an ECD list where the part assembly to be changed is located by a system, assuming that the number of ECDs in the ECD list is n, regarding the ith ECD in the list, i belongs to n, the validity of the i belongs to a set EVi, obtaining a valid range set of the part assembly or assembly to be changed based on the sum of the validity of the ECDs, recording the valid range set as a set PV, PV (EV 1 ∪ EV2 ∪ … … ∪ EVn), determining an effective frame range set of the current change, recording the valid frame range set as a set CV, and obtaining the change mode of the part assembly to be changed according to the calculation of the effective frame range of the current change and the current frame range of the part assembly to be changed:

a) if the set CV comprises a set PV, the component to be changed is changed for changing the version and is marked as a changed piece for changing the version;

b) if the set PV really comprises the set CV, the component to be changed is changed by changing the number and is marked as a number changing change piece;

c) if the set CV and the set PV have intersection and are not subsets, the component to be changed is changed by changing the number and is marked as a number changing piece;

d) if the intersection of the set CV and the set PV is empty, the component to be changed is not allowed to be changed at this time;

step two: if the component to be changed is changed by changing the number, the system automatically takes the upper assembly as the development step one of the component to be changed:

a) if the upper-layer assembly is changed in a plate changing way, stopping tracing, and marking the upper-layer assembly as a plate changing piece;

b) if the upper assembly is changed by changing the number and is not the topmost assembly, continuously tracing the upper assembly to execute the step two until the upper assembly is changed by changing the version and marked as a changed version change part or the upper assembly is the topmost assembly, marking the upper assembly as a changed version change part or a changed number change part according to an actual calculation result, and stopping tracing;

step three: calculating the change mode of each design module in the design module list where the to-be-changed piece is located as shown in fig. 3, wherein the change of the design module is embodied as the change of an ECD, and for the ith ECD in the ECD list, i belongs to n:

a) if the set CV comprises a set EVi, the ECD is a plate change, and is marked as a plate change ECD, the effectiveness of a new version of the ECD is EVi, and the effectiveness of an old version of the ECD is set to be null;

b) if the set EVi really contains the set CV, the ECD is changed by changing the number, the ECD is marked to be changed by changing the number, the effective range of the new ECD number is the set CV, the effective range of the original ECD number is the complement of the CV in the EVi, and the effective range is marked as NV (NV-CV);

c) if the set EVi and the set CV have intersection and are not subsets, the ECD is changed by changing the number, the ECD is marked to be changed by changing the number, the validity range of the new ECD number is the set NV (CV ∩ EVi), and the validity range of the original ECD is the set EVi-NV;

d) if the intersection of the set EVi and the set CV is empty, the ECD is not changed;

e) performing steps a to d for each ECD in the ECD list until determining a modification manner of all ECDs.

Step four: performing the first step to the third step on other components to be changed of the current change until all the components to be changed complete the change calculation control process;

step five: and (3) changing and executing: according to the change calculation result, revising a new version of the changed components and ECD, creating new numbers for the changed components and ECD, and hanging other unchanged components under the new version or the new numbered ECD; and (4) carrying out three-dimensional model design on the modified part, and carrying out examination and issuance by taking the design module as a unit, so as to realize the sealing of engineering modification, and finishing the modification.

The above is a design change control method, in which the change types of the design module and the component are divided into a plate change and a number change, and the change of the design module is finally embodied as the change of the ECD. For ECD and components, when the version is changed, the version is derived according to the A, B, C, D … … mode, the version A can initiate the change to be derived into the version B after the approval, the version B takes effect after the approval, and the version A is invalidated. For change of numbering, the numbering and derivation rules of the ECD and component parts need to be defined:

a) for ECD:

the ECD is numbered as shown in FIG. 4, and the rule is: ECD-XXXXXXXXXXXX-YYYY, wherein XXXXXXXXXXXX is information of model, system component or ATA section number, etc., YYYY is configuration information of design module, the modification of the design module is embodied by the derivation of YYYY, the initial value of YYYY is 1, the number of YYYY is developed according to the system of 'fish bone number' as shown in FIG. 5, if the number change modification is effective for the future frame, namely, the frame comprises + ∞frame, the modification is developed according to the transverse number of the fish bone, the 1 derivation is 2, the 2 derivation is 3, and the like; if the number change is only effective for part of the shelves and does not include the future shelf (not including + ∞), the fish bone is developed according to the longitudinal number of the fish bone, through change calculation, if the change affects the ECD with the configuration information of 1, 1 is derived to be 1_1, during the next change, if the change affects the ECD with the configuration information of 1, 1 is derived to be 1_2, or if the change affects the ECD with the configuration information of 1_1, 1_1 is derived to be 1_1_1, engineering change occurs again, the change affects the ECD with the configuration information of 1_1, 1_1_2 is generated, and the like.

b) For the component parts:

the numbering of the components is shown in figure 6, the rule is XX-XXXXXXXXX-YYY, XX is represented by the model, the middle is 10 digits and represents the system, the subsystem and the subsystem of the airplane, YYY is three digits and is 001 or 002, 001 represents the left part of the symmetrical part or a single part without dividing the left part and the right part, and 002 represents the right part of the symmetrical part. When changing the number, 001 is derived according to the rules of 003, 005 and 007 … …, and 002 is derived according to the rules of 004, 006 and 008 … ….

Assuming that the design module 1 exists on the product structure, the structure, version and effectiveness are shown in fig. 7.

In development, engineering change is needed for reasons of design improvement or process requirements, the component to be changed is a part 1, and the change effective rate is {1, 2, 3, … … }. The computer system carries out change calculation on each part in the list of parts to be changed:

1) calculating the change mode of the component to be changed: for a part 1 to be changed, calculating that a design module where the part is located is a design module 1, the effectiveness of the part is the sum of the effectiveness of the ECD, so that the effectiveness before the part 1 is changed is {1, 2, 3, … … }, the change effective rate is {1, 2, 3, … … }, and the two sets are the same, so that the part 1 is changed to be a version B;

2) tracing the change mode of the upper assembly of the part to be changed: when the part to be changed is changed in a plate changing way, the computer does not actively trace back the change mode of the assembly upwards, so that the assembly of the upper layer is not changed;

3) calculating the change mode of the ECD where the part to be changed is located: the corresponding ECD1 is changed to be the previous frame {1, 2, 3, … … }, the change effective frame is the frame {1, 2, 3, … … }, the two sets are the same, the ECD1 is changed for changing the version, a version B is generated, the effectiveness is {1, 2, 3, … … }, the effectiveness of the version A is null, and the version A is invalidated;

4) and (3) changing and executing: other components without modification are automatically hung under the B version of the ECD to form the final product structure as shown in FIG. 8.

In the development, the parts are already produced in work-in-process and are partially installed, the part 2 needs to be changed and the change effective frequency is {6, 7, 8, … … }, and the computer system carries out change calculation on each part in a to-be-changed part list:

1) calculating the change mode of the component to be changed: for the part 2 to be changed, calculating that the design module where the part is located is the design module 1, the validity of the part is the sum of the validity of the belonged ECD, so that the pre-change validity of the part 2 is {1, 2, 3, … … }, the change effective frame is {6, 7, 8, … … }, and the change effective frame is a subset of the original frame and is different, so that the part 2 is changed for changing the number to generate a new number XX-5381120002-;

2) tracing the change mode of the upper assembly of the part to be changed: when the part to be changed is changed by changing the number, the computer traces back the change mode of assembly upwards, the upper layer assembly is the component 1, and the ECD where the component is located is the ECD1, so the effectiveness before the change of the component 1 is {1, 2, 3, … … }, the change effective frame is {6, 7, 8, … … }, and the change effective frame is a subset of the original frame and is different, therefore, the component 1 is changed by changing the number, and a new number XX-5381120000-; the assembly 1 is changed in number, so that the computer continuously traces back the change mode of the assembly 1 upwards, the ECD where the assembly 1 is located is the ECD1, therefore, the pre-change effectiveness of the assembly 1 is {1, 2, 3, … … }, the change effective rack is {6, 7, 8, … … }, and the change effective rack is a subset of the original rack and is different, therefore, the assembly 1 is changed in number, and a new number XX-5381000000-; assembly 1 is the assembly of the uppermost layer, and the tracing is stopped;

3) calculating the change mode of the ECD where the part to be changed is located: the validity of the ECD1 before change in the corresponding ECD list is {1, 2, 3, … … }, the effectiveness change is {6, 7, 8, … … }, the ECD1 is the change of the number change, the A version of the new ECD2 is generated, the serial number of the ECD2 is ECD-5381000000-2 according to the transverse derivation of the serial number of the fishbone, the validity is {6, 7, 8, … … }, and the B version of the ECD1 is {1, 2, 3, 4, 5 };

4) and (3) changing and executing: other unmodified components are automatically hung under the version A of the ECD2 to form the final product structure as shown in FIG. 9.

The parts in development are already produced in work-in-process and are partially installed,

parts

2 and 3 need to be changed for other reasons, the change effective frequency is {4, 5, … …, 10}, and the computer system performs change calculation on each part in a list of parts to be changed:

1) calculating the change mode of the component to be changed: for the part 2 to be changed, calculating that the ECD where the part is located is ECD1, the effectiveness of the part is the sum of the effectiveness of the ECD, therefore, the effectiveness before the part 2 is changed is {1, 2, … … 5}, the change effective frame is {4, 5, … …, 10}, the change effective frame and the original frame are not subsets and have intersection, therefore, the part 2 is changed by changing the number, and a new number XX-5381120002 and 005 are generated;

2) tracing the change mode of the upper assembly of the part to be changed: when the part 2 to be changed is changed by changing the number, the computer traces back the change mode of assembly upwards, the upper layer is assembled into the component 1, and the ECD where the component is located is ECD1, so the effectiveness before the change of the component 1 is {1, 2, … … 5}, the change effective frame is {4, 5, … …, 10}, the change effective frame and the original frame are not subsets and have intersection, therefore, the component 1 is changed by changing the number, and a new number XX-5381120000-plus 005 is generated; the assembly 1 is changed in number, so that the computer continuously traces back the change mode of the assembly 1 upwards, the ECD where the assembly 1 is located is the ECD1, therefore, the effectiveness before the change of the assembly 1 is {1, 2, … … 5}, the change effective frame is {4, 5, … …, 10}, the change effective frame and the original frame are not subsets and have intersection, therefore, the assembly 1 is changed in number, and a new number XX-5381000000-; assembly 1 is the assembly of the uppermost layer, and the tracing is stopped;

3) calculating the change mode of the ECD where the part to be changed is located: the validity before change of the ECD1 in the corresponding ECD list is {1, 2, … … 5}, the effectiveness change is {4, 5, … …, 10}, the ECD1 is the change of the number change, an A version of the new number ECD3 is generated, the number is derived according to the longitudinal rule of the fish bone number, the number is ECD-5381000000-1_1, the validity is {4, 5}, and the validity of a B version of the ECD1 is {1, 2, 3 };

4) calculating the change mode of the component to be changed: for the part 3 to be changed, calculating ECDs of the part to be changed to be ECD1 and ECD2, wherein the effectiveness of the part is the sum of the effectiveness of the ECDs, so that the effectiveness before the part 3 is changed is {1, 2, 3, … … }, the change effectiveness frame is {4, 5, … …, 10}, and the change effectiveness frame is a subset of the original frame, so that the part 3 is changed by changing the number to generate a new number XX-5381120003-;

5) tracing the change mode of the upper assembly of the part to be changed: when the part 3 to be changed is changed by changing the number, the computer traces back the change mode of assembly upwards, the assembly 1 and the assembly 2 are assembled on the upper layer, the ECD where the assembly 1 is located is ECD1, therefore, the effectiveness before the change of the assembly 1 is {1, 2, … …, 5}, the change effective frame is {4, 5, … …, 10}, the change effective frame and the original frame are not subsets and have intersection, therefore, the assembly 1 is changed by changing the number, and a new number XX-5381000000 and 005 are generated; assembly 1 is the assembly of the uppermost layer, and the tracing is stopped; the ECD where the assembly 2 is located is ECD2, so that the effectiveness before the assembly 2 is changed is {6, 7, 8, … … }, the change effective frame is {4, 5, … …, 10}, the change effective frame and the original frame are not subsets and have intersection, and therefore, the assembly 2 is changed by changing the number, and a new number XX-5381000000-007 is generated; assembly 2 is the assembly of the uppermost layer, and the tracing is stopped;

6) calculating the change mode of the ECD where the part to be changed is located: the validity before change of the ECD1 in the corresponding ECD list is {1, 2, … …, 5}, the change validation frequency is {4, 5, … …, 10}, the ECD1 is the change of the number change, the A version of the new number ECD3 is generated, the number is derived according to the longitudinal rule of the fish bone number, the number is ECD-5381000000-1_1, the validity is {4, 5}, and the B version of the ECD1 is {1, 2, 3 }; the validity of the ECD2 before change in the corresponding ECD list is {6, 7, 8, … … }, the effectiveness change is {4, 5, … …, 10}, the ECD2 is the change of the number change, the version A of the new number ECD4 is generated, the number is derived according to the longitudinal rule of the fish bone number and is ECD-5381000000-2_1, the validity is {6, 7, … …, 10}, and the version A of the ECD2 is {11, 12, 13, … … };

7) the modification execution result is as shown in fig. 10.

The invention discloses a design change control method, which defines a change control mechanism of a design module and a component based on a simplified configuration management mode, comprises the contents of change calculation of the component to be changed, tracing of upper assembly, change mode and effectiveness calculation of the design module and the like, and also defines the change derivation mode of the design module and the component, comprises a version derivation mechanism and a numbering derivation mechanism, firstly provides a fishbone derivation rule of the numbering of the design module, and realizes the dominance of the configuration change of the design module. The invention realizes the automatic and efficient control of the complex change states of the design module and the components during the development of the airplane, can ensure the consistency of the design end and the manufacturing enough configuration data, and is fit for the actual engineering.

Claims

1. A design change control method, comprising:

2. The method of claim 1, wherein updating the number or version number of the component to be modified according to the current shelf range and the effective shelf range of the current modification comprises:

3. The method as claimed in claim 2, wherein updating the number or version number of the ECD according to the current shelf range and the current change effective shelf range of the ECD further comprises:

4. The method according to claim 2, wherein after updating the number or version number of the component to be changed according to the current shelf range of the component to be changed and the effective shelf range of the current change, the method further comprises:

5. The method of claim 4, wherein for the ith layer assembly, i is the number of layers experienced from the component to be modified to the assembly, i is an integer from 1 to n, and n is the number of layers experienced from the component to be modified to the top layer of the assembly; according to the number or the version number of the component to be changed, the number or the version number of the assembly is updated layer by layer, and the method comprises the following steps:

6. The method as claimed in claim 3, wherein the number of the ECD comprises a horizontal number and a vertical number, and the number change rule of the ECD comprises:

7. The method of claim 2, wherein the numbering change rule of the component to be changed comprises:

8. The method of claim 3, wherein the change rule of the version number comprises:

the components to be changed and the ECD are derived according to the alphabetical sequence of the version number;

and when a new version is generated, the old version is invalidated.