Research on Multiresponse Robust Optimization Based on RSM

Abstract

Traditional design method based on mechanics theory and empirical formula, it could not always achieve the best robust solution, this paper discusses multiresponse robust design method based on Response Surface Methodology and used it in valve spring optimization design. The performance of valve spring directly affects whole performance of pump, spring wire diameter, spring pitch diameter and number of active coils are deemed as design variables, the three objectives are valve spring stiffness, the inherent frequency and valve spring mass, response surface models of the three objective functions are built through Response Surface Methodology; through desirability function method, multiresponse optimization is converted into the problem of finding the maximum total desirability function. The approach described in this paper was applied and verified in a case study in the 3DT-25/1.5 reciprocating pump valve assembly.