The Research Of Multi-quality Control Of Engine Cylinder Head

With the progress of production technology,the level of automation and information technology of automobile manufacturing industry continue to develop.The production crafts of the vehicle has become more complicated.At the same time,the quality and the performance requirements of vehicle are also increasing.The engine is the most important part of the vehicle parts,it's quality level can ultimately affect the overall performance of the car quality.The quality control of the engine cylinder head production line is more and more attention by the engineering industry.Using the traditional SPC control chart can not be system quality control.This paper presents a multivariate quality control and diagnosis technique based on copula function correlation analysis.on this basis,constructing a multi-quality control system of engine cylinder head line.The main contents of this paper are as follows:1)Study on the crafts characteristics of engine cylinder head line and characteristics of quality data.2)On the basis of the characteristics of the cylinder head line quality point,proposing Copula function model research the relationship between quality point.3)Making quality control to the quality point that existence strong correlation after standardize quality data.For multi-quality diagnosis problem,proposing multi-quality diagnosis technique based on BP neural network.4)Based on the above theoretical and technology.Building a set of multi-quality control system of engine cylinder head line for the actual production...