Abstract: A guaranteed cost optimization method based on analysis of parameter interval uncertainties is proposed to overcome the disadvantage in design optimization of shell transfer arm. In this proposed method, the interval characteristic of key dimensions or material parameters in the engineering design is considered, and the parameter perturbations are mapped from variation space into objective and constraint spaces, then the obtained degraded-estimation of objective and constraint is acted as an additional constraint of original optimization problem, resulting in a new robust optimization of an outer-inner optimization structure. The optimization results of shell transfer arm show that the proposed method is effective in solving complex engineering optimization problems with interval uncertainties.

Key words: ordnance science and technology, interval uncertainty, guaranteed cost optimization, shell transfer arm