Tolerance optimization distribution method

A technology for optimizing allocation and tolerance, applied in multi-objective optimization, design optimization/simulation, calculation model, etc.

Pending Publication Date: 2021-05-04
ZHEJIANG UNIV
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Problems solved by technology

Tolerance optimization allocation with the goal of obtaining the lowest cost is the main technology affecting the tolerance economy. The current research focuses on minimizing the sum of processing costs and quality loss costs. There are also parallel design studies involving processing procedures and environmental robustness. Comprehensive There are not many studies that consider ensuring the ability of products to resist the influence of tolerance changes
Tolerance optimization allocation is a multi-objective optimization problem, but the optimization algorithm used to solve this type of problem is relatively traditional and still incomplete

Method used

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Embodiment Construction

[0061] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings, so as to make the technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned herein.

[0062] The invention proposes a method for tolerance optimization based on an improved bat algorithm. On the basis of the two-dimensional size chain, establish a multi-objective optimization mathematical model that takes comprehensive consideration of processing cost, quality loss and improvement sensitivity cost as the objective function, and takes tolerance processing capability and assembly tolerance constraints as constraints, and uses the present invention to propose The algorithm is used to solve the model, so that the obtained allocation results meet the requirements of large tolerance and mini...

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Abstract

The invention discloses a tolerance optimization distribution method, which comprises the following steps of: (1) constructing a fitness function which takes the total processing cost, total mass loss and total sensitivity cost as objective functions and takes processing capacity and assembly tolerance constraint as constraint conditions, and determining a weight factor between the objective functions by adopting an analytic hierarchy process; (2) importing assembly information into the fitness function; and (3) solving the fitness function by adopting an improved bat algorithm and outputting a result, wherein the improved bat algorithm is obtained by introducing a crossover operator and a mutation operator of a genetic algorithm into the bat algorithm.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to a tolerance optimization distribution method. Background technique [0002] With the development of the machinery manufacturing industry, product innovation and economy have become the key for enterprises to enhance their comprehensive strength. In the whole life cycle of a product, design is the main stage to achieve innovation, and tolerance is the key factor to ensure the rationality and economy of design. Tolerance optimization allocation with the goal of obtaining the lowest cost is the main technology affecting the tolerance economy. The current research focuses on minimizing the sum of processing costs and quality loss costs. There are also parallel design studies involving processing procedures and environmental robustness. Comprehensive There are not many studies considering the ability to ensure the product's ability to resist the influence of tolerance changes....

Claims

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Application Information

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IPC IPC(8): G06F30/27G06F30/17G06N3/00G06F111/04G06F111/06
CPCG06F30/27G06F30/17G06N3/006G06F2111/04G06F2111/06
Inventor 曹衍龙吴紫涧杨凯莉叶晓平杨将新
Owner ZHEJIANG UNIV
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