In this paper, we try to use feedback control system as a

new hybrid method to solve optimization problems. Because

controller can control plant for a goal, if the plant is replaced

by the cost function and the goal is changed to be solving

optimization problems, then optimization problems will

become a control problem. Thus a control system for solving

optimization problems is obtained, in which the neural

network can be used as controller, and any information of the

plant without delay is knowable.