Part fixing point analysis and selection method and device

Abstract

The invention discloses a part fixed point analysis and selection method and device, and relates to the technical field of automobile design, and the method comprises the following steps: obtaining a fixed point selection range and a part peripheral boundary based on a three-dimensional model of a target part and a surrounding environment part model; based on a preset fixed point evaluation target model, a fixed point selection range and a part peripheral boundary, according to a set fixed point number, obtaining a corresponding fixed point support form and a fixed mode required by the fixed point; and outputting part fixing point position information based on the number of the fixing points, the fixing point support form and the fixing mode required by the fixing points. According to the method, analysis is performed based on the target part and the surrounding environment part model, so that the optimal fixing point and the fixing form of the part can be quickly and accurately found, and the actual requirements of production design work are met.

Description

Technical Field

[0001] The invention relates to the technical field of automobile design, and in particular to a method and a device for analyzing and selecting a part fixing point. Background Art

[0002] In the current automotive design field, the design of the fixing points of parts is required in the overall layout of the car. However, in the current design work, the selection method of the fixed points of the transmission makes it difficult to select the fixing points of the parts and it is impossible to determine whether the selected fixing points can achieve the optimal fixing form of the parts, and design errors will occur in the process of confirming the fixing points of the parts. Therefore, in order to meet the actual needs of production design work, a part fixing point analysis and selection technology is provided. Summary of the invention

[0003] In view of the defects existing in the prior art, the purpose of the present invention is to provide a method and device for analyzing and selecting part fixing points, which performs analysis based on the target part and the surrounding environment part model so as to quickly and accurately find the optimal fixing point and fixing form of the part to meet the actual needs of production design work.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is: In a first aspect, the present application provides a method for analyzing and selecting a part fixing point, the method comprising the following steps: Based on the 3D model of the target part and the model of the surrounding environment parts, the fixed point selection range and the perimeter boundary of the part are obtained; Based on the preset fixed point evaluation target model, the fixed point selection range and the peripheral boundary of the part, and according to the set number of fixed points, the corresponding fixed point bracket form and the required fixing method of the fixed point are obtained; Based on the number of the fixing points, the form of the fixing point brackets and the required fixing method of the fixing points, the position information of the part fixing points is output; wherein, The fixed point evaluation target model is used to analyze and obtain the corresponding fixed point bracket form and the required fixing method of the fixed point based on the fixed point selection range, the part peripheral boundary and the number of fixed points.

[0005] On the basis of the above technical solution, based on the three-dimensional model of the target part and the model of the surrounding environment parts, the fixed point selection range and the part peripheral boundary are obtained, including the following steps: The surrounding environment model of the target part is constructed through CATIA, and the fixed point selection range and the surrounding boundary of the part are obtained according to the three-dimensional model of the target part.

[0006] On the basis of the above technical solution, based on the preset fixed point evaluation target model, the fixed point selection range and the peripheral boundary of the part, according to the set number of fixed points, the corresponding fixed point bracket form and the required fixing method of the fixed point are obtained, including the following steps: Based on a preset fixed point evaluation target model, based on the set number of fixed points, the fixed point selection range and the peripheral boundary of the part, weights corresponding to different types of fixed point bracket forms and weights corresponding to different fixed point fixing methods are calculated; Based on the weights corresponding to different types of fixed point bracket forms and the weights corresponding to different fixed point fixing methods, a comprehensive analysis is performed to obtain the corresponding fixed point bracket form and the required fixing method of the fixed point.

[0007] On the basis of the above technical solution, the fixed point evaluation target model is configured with a fixed point bracket selection algorithm; The fixed point bracket algorithm determines whether the target part needs a bracket according to the fixed point selection range, the peripheral boundary of the part and the set number of fixed points, and then obtains the corresponding fixed point bracket form and the required fixing method of the fixed point based on the physical conditions and performance conditions of the target part; wherein, The physical conditions include center of gravity and torque; The performance conditions include space utilization and peripheral component clearance.

[0008] Based on the above technical solution, the fixed point bracket selection algorithm includes the following steps: Step 1: Enter the basic parameters of the algorithm in MATLAB; Step 2: Obtain the weight matrix of the fixed points corresponding to all parts by improving the A* algorithm ; Step 3: Obtain the fixed support weight matrix corresponding to all fixed supports by improving the Boustrophedon algorithm ; Step 4: Integrate the weight matrix of the part fixed points and the fixed support weight matrix , get the global weight matrix ; Step 5: Set the population size M, initialize the genetic algebra counter: gen=0; randomly generate the initial path set P(gen); Step 6: The produced population Substitute the fitness function , and calculate ; Step 7: Start iterating and follow the function value Sorting; Step 8: Start the selection operation, design the selection operator based on the roulette method, and obtain the population that will be inherited to the next generation after screening ; Step 9: Select the crossover probability, use the partial mapping crossover algorithm, select two individuals for crossover, and form the offspring genes that can be inherited ; Step 10: Select the mutation probability and use the 2-opt mutation operation to mutate and form heritable offspring genes ; Step 11: Form a new population , calculate the fitness and record, the number of iterations + 1; Step 12: When the termination condition is reached, the iteration ends and the final result is output; The basic parameters of the algorithm include the fixed point selection range and the surrounding environment model.

[0009] In a second aspect, the present application provides a device for analyzing and selecting a fixed point of a part, the device comprising: A part peripheral boundary acquisition module is used to obtain a fixed point selection range and a part peripheral boundary based on a three-dimensional model of a target part and a model of surrounding parts; A fixing information acquisition module, which is used to obtain the corresponding fixing point bracket form and the required fixing method of the fixing point based on the preset fixing point evaluation target model, the fixing point selection range and the peripheral boundary of the part according to the set number of fixing points; A fixing information output module is used to output the part fixing point position information based on the number of fixing points, the fixing point bracket form and the fixing method required for the fixing point; wherein, The fixed point evaluation target model is used to analyze and obtain the corresponding fixed point bracket form and the required fixing method of the fixed point based on the fixed point selection range, the part peripheral boundary and the number of fixed points.

[0010] On the basis of the above technical solution, the part peripheral boundary acquisition module is also used to construct the surrounding environment model of the target part through CATIA, and obtain the fixed point selection range and the part peripheral boundary according to the three-dimensional model of the target part.

[0011] On the basis of the above technical solution, the fixed information acquisition module is further used to calculate the weights corresponding to different types of fixed point bracket forms and the weights corresponding to different fixed point fixing methods based on the preset fixed point evaluation target model, the set number of fixed points, the fixed point selection range and the peripheral boundary of the part; The fixing information acquisition module is also used to comprehensively analyze and obtain the corresponding fixing point bracket form and the required fixing method of the fixing point based on the weights corresponding to different types of fixing point bracket forms and the weights corresponding to different fixing point fixing methods.

[0012] On the basis of the above technical solution, the fixed point evaluation target model is configured with a fixed point bracket selection algorithm; The fixed point bracket algorithm determines whether the target part needs a bracket according to the fixed point selection range, the peripheral boundary of the part and the set number of fixed points, and then obtains the corresponding fixed point bracket form and the required fixing method of the fixed point based on the physical conditions and performance conditions of the target part; wherein, The physical conditions include center of gravity and torque; The performance conditions include space utilization and peripheral component clearance.

[0013] Based on the above technical solution, the fixed point bracket selection algorithm includes the following steps: Step 1: Enter the basic parameters of the algorithm in MATLAB; Step 2: Obtain the weight matrix of the fixed points corresponding to all parts by improving the A* algorithm ; Step 3: Obtain the fixed support weight matrix corresponding to all fixed supports by improving the Boustrophedon algorithm ; Step 4: Integrate the weight matrix of the part fixed points and the fixed support weight matrix , get the global weight matrix ; Step 5: Set the population size M, initialize the genetic algebra counter: gen=0; randomly generate the initial path set P(gen); Step 6: The produced population Substitute the fitness function , and calculate ; Step 7: Start iterating and follow the function value Sorting; Step 8: Start the selection operation, design the selection operator based on the roulette method, and obtain the population that will be inherited to the next generation after screening ; Step 9: Select the crossover probability, use the partial mapping crossover algorithm, select two individuals for crossover, and form the offspring genes that can be inherited ; Step 10: Select the mutation probability and use the 2-opt mutation operation to mutate and form heritable offspring genes ; Step 11: Form a new population , calculate the fitness and record, the number of iterations + 1; Step 12: When the termination condition is reached, the iteration ends and the final result is output; The basic parameters of the algorithm include the fixed point selection range and the surrounding environment model.

[0014] Compared with the prior art, the advantages of the present invention are: The present invention performs analysis based on the target part and the surrounding environment part model so as to quickly and accurately find the optimal fixing point and fixing form of the part to meet the actual needs of production design work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 A flowchart of the steps of the method for analyzing and selecting a part fixing point according to an embodiment of the present invention; Figure 2 It is a principle flow chart of the method for analyzing and selecting the fixing points of parts according to an embodiment of the present invention; Figure 3 It is a principle flow chart of a fixed point bracket selection algorithm in a part fixed point analysis and selection method according to an embodiment of the present invention; Figure 4 A flowchart of the steps of a fixed point bracket selection algorithm in a method for analyzing and selecting a part fixed point according to an embodiment of the present invention; Figure 5 It is a structural block diagram of a device for analyzing and selecting a part fixing point according to an embodiment of the present invention. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0018] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0019] The embodiment of the present application provides a method and device for analyzing and selecting a part fixing point, which performs analysis based on a target part and a model of surrounding parts so as to quickly and accurately find the best fixing point and fixing form of the part to meet the actual needs of production design work.

[0020] In order to achieve the above technical effects, the overall idea of ​​this application is as follows: A method for analyzing and selecting a part fixing point comprises the following steps: S1. Based on the three-dimensional model of the target part and the model of the surrounding environment parts, obtain the fixed point selection range and the peripheral boundary of the part; S2. Based on the preset fixed point evaluation target model, the fixed point selection range and the perimeter of the part, the corresponding fixed point bracket form and the required fixing method of the fixed point are obtained according to the set number of fixed points; S3. Output the position information of the part fixing points based on the number of fixing points, the form of the fixing point brackets and the required fixing method of the fixing points; wherein, The fixed point evaluation target model is used to analyze and obtain the corresponding fixed point bracket form and the required fixing method of the fixed point based on the fixed point selection range, the surrounding boundary of the part and the number of fixed points.

[0021] The embodiments of the present application are further described in detail below in conjunction with the accompanying drawings.

[0022] First, see Figures 1 to 4 As shown, an embodiment of the present application provides a method for analyzing and selecting a part fixing point, and the method for analyzing and selecting a part fixing point includes the following steps: S1. Based on the three-dimensional model of the target part and the model of the surrounding environment parts, obtain the fixed point selection range and the peripheral boundary of the part; S2. Based on the preset fixed point evaluation target model, the fixed point selection range and the perimeter of the part, the corresponding fixed point bracket form and the required fixing method of the fixed point are obtained according to the set number of fixed points; S3. Output the position information of the part fixing points based on the number of fixing points, the form of the fixing point brackets and the required fixing method of the fixing points; wherein, The fixed point evaluation target model is used to analyze and obtain the corresponding fixed point bracket form and the required fixing method of the fixed point based on the fixed point selection range, the surrounding boundary of the part and the number of fixed points.

[0023] In the embodiment of the present application, analysis is performed based on the target part and the surrounding environment part model so as to quickly and accurately find the best fixing point and fixing form of the part to meet the actual needs of production design work.

[0024] Further, based on the three-dimensional model of the target part and the model of the surrounding environment parts, the fixed point selection range and the part peripheral boundary are obtained, including the following steps: The surrounding environment model of the target part is constructed through CATIA, and the fixed point selection range and the surrounding boundary of the part are obtained according to the three-dimensional model of the target part.

[0025] Further, based on the preset fixed point evaluation target model, the fixed point selection range and the part peripheral boundary, according to the set number of fixed points, the corresponding fixed point bracket form and the required fixing method of the fixed point are obtained, including the following steps: Based on a preset fixed point evaluation target model, based on the set number of fixed points, the fixed point selection range and the peripheral boundary of the part, weights corresponding to different types of fixed point bracket forms and weights corresponding to different fixed point fixing methods are calculated; Based on the weights corresponding to different types of fixed point bracket forms and the weights corresponding to different fixed point fixing methods, a comprehensive analysis is performed to obtain the corresponding fixed point bracket form and the required fixing method of the fixed point.

[0026] Further, the fixed point evaluation target model is configured with a fixed point bracket selection algorithm; The fixed point bracket algorithm determines whether the target part needs a bracket according to the fixed point selection range, the peripheral boundary of the part and the set number of fixed points, and then obtains the corresponding fixed point bracket form and the required fixing method of the fixed point based on the physical conditions and performance conditions of the target part; wherein, The physical conditions include center of gravity and torque; The performance conditions include space utilization and peripheral component clearance.

[0027] It should be noted that, when the above technical solution is implemented, the situation is as follows: Step 1: Use CATIA to build the required layout environment space model and set the definition domain range of the fixed point according to the 3D model attributes of the part.

[0028] Step 2: Obtain the digital model of the part's surrounding environment, determine the spatial definition domain of the part's fixed point layout based on the digital model outline, and generate a surrounding environment model. By obtaining the CATIA surrounding space model, build an environmental mathematical model in MATLAB.

[0029] Step 3: Propose a fixed point evaluation target, which is calculated based on the number of fixed points, the form of fixed point brackets, and the required fixing method of the fixed points, and the setting weights to calculate the comprehensive fixed point target.

[0030] The evaluation target is obtained by calculating the number of given fixed points, the weights of different types of brackets (such as Z-shaped brackets, I-shaped brackets, etc.), and the weights of fixed forms (such as welding, screwing, etc.) through comprehensive calculation of the above limiting conditions.

[0031] Step 4: Propose a fixed point bracket selection algorithm, automatically select the bracket form and generate the bracket according to the position of the fixed point and the requirements of the fixed point, judge whether the part needs a bracket through the number of fixed points and the surrounding environment parts, and automatically determine the required bracket through calculation based on the physical conditions (physical conditions such as center of gravity and torque) and performance conditions (space occupancy, clearance between surrounding parts, etc.) of the required fixed parts.

[0032] Step 5: Through the constructed environmental model, an optimization algorithm based on an improved genetic algorithm is proposed to obtain the optimal coordinates and fixing form of the part fixing points.

[0033] Step 6: Generate the part model directly in CATIA using the given coordinates.

[0034] Furthermore, the fixed point bracket selection algorithm includes the following steps: Step 1: Enter the basic parameters of the algorithm in MATLAB; Step 2: Obtain the weight matrix of the fixed points corresponding to all parts by improving the A* algorithm ; Step 3: Obtain the fixed support weight matrix corresponding to all fixed supports by improving the Boustrophedon algorithm ; Step 4: Integrate the weight matrix of the part fixed points and the fixed support weight matrix , get the global weight matrix ; Step 5: Set the population size M, initialize the genetic algebra counter: gen=0; randomly generate the initial path set P(gen); Step 6: The produced population Substitute the fitness function , and calculate ; Step 7: Start iterating and follow the function value Sorting; Step 8: Start the selection operation, design the selection operator based on the roulette method, and obtain the population that will be inherited to the next generation after screening ; Step 9: Select the crossover probability, use the partial mapping crossover algorithm, select two individuals for crossover, and form the offspring genes that can be inherited ; Step 10: Select the mutation probability and use the 2-opt mutation operation to mutate and form heritable offspring genes ; Step 11: Form a new population , calculate the fitness and record, the number of iterations + 1; Step 12: When the termination condition is reached, the iteration ends and the final result is output; The basic parameters of the algorithm include the fixed point selection range and the surrounding environment model.

[0035] Second, see Figure 5 As shown, the embodiment of the present application provides a device for analyzing and selecting a part fixing point based on the method for analyzing and selecting a part fixing point mentioned in the first aspect, and the device includes: A part peripheral boundary acquisition module is used to obtain a fixed point selection range and a part peripheral boundary based on a three-dimensional model of a target part and a model of surrounding parts; A fixing information acquisition module, which is used to obtain the corresponding fixing point bracket form and the required fixing method of the fixing point based on the preset fixing point evaluation target model, the fixing point selection range and the peripheral boundary of the part according to the set number of fixing points; A fixing information output module is used to output the part fixing point position information based on the number of fixing points, the fixing point bracket form and the fixing method required for the fixing point; wherein, The fixed point evaluation target model is used to analyze and obtain the corresponding fixed point bracket form and the required fixing method of the fixed point based on the fixed point selection range, the part peripheral boundary and the number of fixed points.

[0036] In the embodiment of the present application, analysis is performed based on the target part and the surrounding environment part model so as to quickly and accurately find the best fixing point and fixing form of the part to meet the actual needs of production design work.

[0037] Furthermore, the part peripheral boundary acquisition module is also used to construct a surrounding environment model of the target part through CATIA, and obtain a fixed point selection range and a part peripheral boundary according to the three-dimensional model of the target part.

[0038] Furthermore, the fixing information acquisition module is also used to evaluate the target model based on the preset fixing points, and to calculate the weights corresponding to different types of fixing point bracket forms and the weights corresponding to different fixing point fixing methods based on the set number of fixing points, the fixing point selection range and the peripheral boundary of the part; The fixing information acquisition module is also used to comprehensively analyze and obtain the corresponding fixing point bracket form and the required fixing method of the fixing point based on the weights corresponding to different types of fixing point bracket forms and the weights corresponding to different fixing point fixing methods.

[0039] Further, the fixed point evaluation target model is configured with a fixed point bracket selection algorithm; The fixed point bracket algorithm determines whether the target part needs a bracket according to the fixed point selection range, the peripheral boundary of the part and the set number of fixed points, and then obtains the corresponding fixed point bracket form and the required fixing method of the fixed point based on the physical conditions and performance conditions of the target part; wherein, The physical conditions include center of gravity and torque; The performance conditions include space utilization and peripheral component clearance.

[0040] Furthermore, the fixed point bracket selection algorithm includes the following steps: Step 1: Enter the basic parameters of the algorithm in MATLAB; Step 2: Obtain the weight matrix of the fixed points corresponding to all parts by improving the A* algorithm ; Step 3: Obtain the fixed support weight matrix corresponding to all fixed supports by improving the Boustrophedon algorithm ; Step 4: Integrate the weight matrix of the part fixed points and the fixed support weight matrix , get the global weight matrix ; Step 5: Set the population size M, initialize the genetic algebra counter: gen=0; randomly generate the initial path set P(gen); Step 6: The produced population Substitute the fitness function , and calculate ; Step 7: Start iterating and follow the function value Sorting; Step 8: Start the selection operation, design the selection operator based on the roulette method, and obtain the population that will be inherited to the next generation after screening ; Step 9: Select the crossover probability, use the partial mapping crossover algorithm, select two individuals for crossover, and form the offspring genes that can be inherited ; Step 10: Select the mutation probability and use the 2-opt mutation operation to mutate and form heritable offspring genes ; Step 11: Form a new population , calculate the fitness and record, the number of iterations + 1; Step 12: When the termination condition is reached, the iteration ends and the final result is output; The basic parameters of the algorithm include the fixed point selection range and the surrounding environment model.

[0041] It should be noted that the part fixing point analysis and selection device mentioned in the second aspect is similar to the technical principle of the part fixing point analysis and selection method mentioned in the first aspect in terms of technical issues, technical means and technical effects, and will not be elaborated here.

[0042] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0043] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0044] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A method for analyzing and selecting a part fixing point, characterized in that: The method comprises the following steps: Based on the 3D model of the target part and the model of the surrounding environment parts, the fixed point selection range and the perimeter boundary of the part are obtained; Based on the preset fixed point evaluation target model, the fixed point selection range and the peripheral boundary of the part, and according to the set number of fixed points, the corresponding fixed point bracket form and the required fixing method of the fixed point are obtained; Based on the number of the fixing points, the form of the fixing point brackets and the required fixing method of the fixing points, the position information of the part fixing points is output; wherein, The fixed point evaluation target model is used to analyze and obtain the corresponding fixed point bracket form and the required fixing method of the fixed point based on the fixed point selection range, the part peripheral boundary and the number of fixed points.

2. The method for analyzing and selecting a part fixing point according to claim 1, characterized in that: Based on the 3D model of the target part and the model of the surrounding parts, the fixed point selection range and the surrounding boundary of the part are obtained, including the following steps: The surrounding environment model of the target part is constructed through CATIA, and the fixed point selection range and the surrounding boundary of the part are obtained according to the three-dimensional model of the target part.

3. The method for analyzing and selecting a part fixing point according to claim 1, characterized in that: Based on the preset fixed point evaluation target model, the fixed point selection range and the part peripheral boundary, according to the set number of fixed points, the corresponding fixed point bracket form and the required fixing method of the fixed point are obtained, including the following steps: Based on a preset fixed point evaluation target model, based on the set number of fixed points, the fixed point selection range and the peripheral boundary of the part, weights corresponding to different types of fixed point bracket forms and weights corresponding to different fixed point fixing methods are calculated; Based on the weights corresponding to different types of fixed point bracket forms and the weights corresponding to different fixed point fixing methods, a comprehensive analysis is performed to obtain the corresponding fixed point bracket form and the required fixing method of the fixed point.

4. The method for analyzing and selecting a part fixing point according to claim 1, characterized in that: The fixed point evaluation target model is configured with a fixed point bracket selection algorithm; The fixed point bracket algorithm determines whether the target part needs a bracket according to the fixed point selection range, the peripheral boundary of the part and the set number of fixed points, and then obtains the corresponding fixed point bracket form and the required fixing method of the fixed point based on the physical conditions and performance conditions of the target part; wherein, The physical conditions include center of gravity and torque; The performance conditions include space utilization and peripheral component clearance.

5. The method for analyzing and selecting a part fixing point according to claim 4, characterized in that: The fixed point bracket selection algorithm comprises the following steps: Step 1: Enter the basic parameters of the algorithm in MATLAB; Step 2: Obtain the weight matrix of the fixed points corresponding to all parts by improving the A* algorithm ; Step 3: Obtain the fixed support weight matrix corresponding to all fixed supports by improving the Boustrophedon algorithm ; Step 4: Integrate the weight matrix of the part fixed points and the fixed support weight matrix , get the global weight matrix ; Step 5: Set the population size M, initialize the genetic algebra counter: gen=0; randomly generate the initial path set P(gen); Step 6: The produced population Substitute the fitness function , and calculate ; Step 7: Start iterating and follow the function value Sorting; Step 8: Start the selection operation, design the selection operator based on the roulette method, and obtain the population that will be inherited to the next generation after screening ; Step 9: Select the crossover probability, use the partial mapping crossover algorithm, select two individuals for crossover, and form the offspring genes that can be inherited ; Step 10: Select the mutation probability and use the 2-opt mutation operation to mutate and form heritable offspring genes ; Step 11: Form a new population , calculate the fitness and record, the number of iterations + 1; Step 12: When the termination condition is reached, the iteration ends and the final result is output; The basic parameters of the algorithm include the fixed point selection range and the surrounding environment model.

6. A device for analyzing and selecting fixed points of parts, characterized in that: The device comprises: A part peripheral boundary acquisition module is used to obtain a fixed point selection range and a part peripheral boundary based on a three-dimensional model of a target part and a model of surrounding parts; A fixing information acquisition module, which is used to obtain the corresponding fixing point bracket form and the required fixing method of the fixing point based on the preset fixing point evaluation target model, the fixing point selection range and the peripheral boundary of the part according to the set number of fixing points; A fixing information output module is used to output the part fixing point position information based on the number of fixing points, the fixing point bracket form and the fixing method required for the fixing point; wherein, The fixed point evaluation target model is used to analyze and obtain the corresponding fixed point bracket form and the required fixing method of the fixed point based on the fixed point selection range, the part peripheral boundary and the number of fixed points.

7. The device for analyzing and selecting parts fixing points according to claim 6, characterized in that: The part peripheral boundary acquisition module is also used to construct the surrounding environment model of the target part through CATIA, and obtain the fixed point selection range and the part peripheral boundary according to the three-dimensional model of the target part.

8. The device for analyzing and selecting parts fixing points according to claim 6, characterized in that: The fixing information acquisition module is also used to calculate the weights corresponding to different types of fixing point bracket forms and the weights corresponding to different fixing point fixing methods based on the preset fixing point evaluation target model, the set number of fixing points, the fixing point selection range and the peripheral boundary of the part; The fixing information acquisition module is also used to comprehensively analyze and obtain the corresponding fixing point bracket form and the required fixing method of the fixing point based on the weights corresponding to different types of fixing point bracket forms and the weights corresponding to different fixing point fixing methods.

9. The device for analyzing and selecting parts fixing points according to claim 6, characterized in that: The fixed point evaluation target model is configured with a fixed point bracket selection algorithm; The fixed point bracket algorithm determines whether the target part needs a bracket according to the fixed point selection range, the peripheral boundary of the part and the set number of fixed points, and then obtains the corresponding fixed point bracket form and the required fixing method of the fixed point based on the physical conditions and performance conditions of the target part; wherein, The physical conditions include center of gravity and torque; The performance conditions include space utilization and peripheral component clearance.

10. The device for analyzing and selecting parts fixing points according to claim 9, characterized in that: The fixed point bracket selection algorithm comprises the following steps: Step 1: Enter the basic parameters of the algorithm in MATLAB; Step 2: Obtain the weight matrix of the fixed points corresponding to all parts by improving the A* algorithm ; Step 3: Obtain the fixed support weight matrix corresponding to all fixed supports by improving the Boustrophedon algorithm ; Step 4: Integrate the weight matrix of the part fixed points and the fixed support weight matrix , get the global weight matrix ; Step 5: Set the population size M, initialize the genetic algebra counter: gen=0; randomly generate the initial path set P(gen); Step 6: The produced population Substitute the fitness function , and calculate ; Step 7: Start iterating and follow the function value Sorting; Step 8: Start the selection operation, design the selection operator based on the roulette method, and obtain the population that will be inherited to the next generation after screening ; Step 9: Select the crossover probability, use the partial mapping crossover algorithm, select two individuals for crossover, and form the offspring genes that can be inherited ; Step 10: Select the mutation probability and use the 2-opt mutation operation to mutate and form heritable offspring genes ; Step 11: Form a new population , calculate the fitness and record, the number of iterations + 1; Step 12: When the termination condition is reached, the iteration ends and the final result is output; The basic parameters of the algorithm include the fixed point selection range and the surrounding environment model.

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