The designing optimization of structural parameters for the frame of
four roller rolling mill was achieved by the utilization of
cooperated optimization method.According to the thought of carrying out designing optimization upon complex system by
designing optimization of multi-branch of learning,let the complex
mechanical system be resolved into a number of simple sub-systems for carrying out designing optimization has been put forward.Cooperated optimization is a kind of multi-branch of learning algorithm of designing optimization that has been developed rather quickly in recent years,the method of cooperated optimization being applied to the optimization design of complex engineering system has been described.Within the optimization of
systematic level of cooperated optimization,the
slack variable is introduced to let the restraint of consistency equality be transformed to the restraint of non-equality.The value adoption of slack variable will affect the convergence speed in the optimization of systematic level.By means of designing optimization of structural parameters for the frame of four roller rolling mill,the general train of thought for carrying out designing optimization of complex mechanical system by the use of
Cooperated optimization method was presented,thus laid a foundation for solving the problems of designing optimization of more complicated mechanical system.A calculation example proved the effectiveness of solving the designing optimization problems in complex mechanical system by cooperated optimization algorithm.