Considered is the nonseparable steady state optimization control problem for large-scale systems, where the overall objective function is not of an additive form with respect to subsystems. To deal with the slow compute problem using iterative algorithms in multiobjective optimization, Hopfield hierarchical optimization network based on IPM is presented. Its asymptote stability is proved and its equilibrium point is the optimal point of the original problem. The simulation shows that the net is effective to...