Gaussian process based injection molding forming process robust design and tolerance design method

Abstract

The invention relates to a Gaussian process based injection molding forming process robust design and tolerance design method. The Gaussian process based injection molding forming process robust design and tolerance design method comprises obtaining the correlation of process parameters and quality objectives by a Gaussian process based self-adaptive canonical correlation analysis method and classify the parameters into main parameters and secondary parameters according to the sizes of degrees of the correlation; establishing a robust optimization model of the main parameters, adding the fluctuation quantity into an objective function and constraint conditions and obtaining a robust process parameter combination through simultaneous optimization of the two targets of the mean and variance to reduce the complexity of calculation of a multi-parameter model reasonably; performing analysis on the relation of the process parameter fluctuation tolerance range and the cost, establishing a mathematical expectation model of a quality overall loss and setting a reasonable tolerance range for every process parameter. According to the Gaussian process based injection molding forming process robust design and tolerance design method, the influence of human experience and trial and error experiment is greatly reduced in the design process, the design cycle is short, the qualified rate of products is high, the system cost is low, an intelligent control project is implemented conveniently, and the Gaussian process based injection molding forming process robust design and tolerance design method can be widely applied to the forming process of various materials.

Description

technical field [0001] The invention relates to a robust design and tolerance design method of injection molding process, in particular to a Gaussian process canonical correlation analysis model combined with an optimization algorithm for injection molding process control robust design and tolerance design method, belonging to the field of injection molding technology engineering . Background technique [0002] With the continuous progress and development of social science and technology, the market's requirements for products are increasingly tending to high precision, high pass rate, and low cost, and the production technology is gradually transforming to intelligent. In the field of injection molding technology engineering, computer simulation technology has been widely used in the prediction of molding quality and the acquisition of optimal process parameter combinations. However, in the actual manufacturing process, the quality of the product is also affected by many n...

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Problems solved by technology

[0006] The purpose of the present invention is to propose a Gaussian process combined with an optimization algorithm for injection molding process control robust design and tolerance design method, by virtue of Gaussian canonical correlation analysis to screen out the main parameters, and further design on this basis, to solve the traditional optimization method calculation Too long time, design cycle and high cost

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