Variable-scale teaching and learning algorithm-based tolerance allocation multi-objective optimization design method
A technology of multi-objective optimization and design method, applied in the field of digital measurement and computer application, to achieve the effect of optimizing tolerance allocation, improving quality and broad application prospects
Inactive Publication Date: 2018-04-03
HUBEI UNIV OF AUTOMOTIVE TECH
View PDF7 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
With the development of precision manufacturing technology, the traditional tolerance optimization model based on cost and quality as the goal can no longer meet the requirements. Under the background of "energy saving and emission reduction", the problem of energy consumption optimization in the manufacturing process is becoming more and more prominent
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0048] In order to express the design scheme and advantages of the present invention more clearly and specifically, the following process will describe in detail the entire assessment scheme flow in conjunction with the accompanying drawings.
[0049] A multi-objective optimization design method for tolerance distribution based on variable-scale teaching and learning algorithm of the present invention comprises the following steps:
[0050] Step 1. Tolerance allocation multi-objective optimization model modeling
[0051] A cost tolerance function is established using a negative square model, where A i ,B i is a known parameter, A i >0,B i >0,i=(1,2..n),t i is the tolerance of the i-th component ring in the linear dimension chain,
[0052]
[0053] The mass loss function is established using the Taguchi mass loss model, where k i is the mass loss constant of the i-th ring, i=(1,2..n),t i is the tolerance of the i-th component ring in the linear dimension chain;
[00...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a variable-scale teaching and learning algorithm-based tolerance allocation multi-objective optimization design method. Through analysis, the manufacturing cost, the quality loss and the processing process energy consumption are determined as objective functions, and a cost, quality and energy consumption-based tolerance allocation multi-objective optimization function model is built; model constraints are processed by using a violation function method, initial populations is grouped and an optimal solution in groups is calculated; in a teaching stage, local search isenhanced for the optimal solution in the groups by adopting a DFP variable-scale method, so that students are ensured to learn from teachers; in a learning stage, the students are guided to learn fromoptimal students in the groups by adopting a directed learning strategy, so that the learning has a certain directivity; and finally a group of tolerance allocation multi-objective solving preferencedecisions are obtained by adopting an AHP.
Description
technical field [0001] The invention relates to a multi-objective optimal design method for mechanical tolerance allocation, in particular to a multi-objective optimal design method for tolerance allocation based on a variable-scale teaching and learning algorithm. It belongs to the field of digital measurement and computer application. Background technique [0002] Tolerance design has an extremely important impact on products and product quality. In the traditional tolerance design, the tolerance value is mainly given by the designer's experience, and it is difficult to guarantee the product accuracy and cost requirements. Tolerance allocation is an important part of tolerance design, which is mainly to study the reasonable allocation of each component in the dimensional chain under the premise of meeting the assembly target. With the development of computer-aided technology, tolerance optimization model and optimization algorithm have become the focus of tolerance desig...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20G06F2111/04G06F2111/06
Inventor 王宸冯正君王生怀肖玉杰
Owner HUBEI UNIV OF AUTOMOTIVE TECH