The anti-windup control for hypersonic vehicles with input saturation based on improved cooperative optimization algorithm

A nonlinear anti-windup(AW) control compensator based on improved cooperative optimization algorithm(ICOA) is proposed to deal with the control problem caused by the saturation of the control surfaces of the hypersonic vehicle(HSV) during re-entry. Firstly, saturated link is added in the system controller, and the model of AW compensator is designed according to the HSV system equations. Then, the nonlinear L2 gain structure is introduced with the purpose of optimizing the performance of system, which transforms the problem of saturation control into the optimization problem through nonlinear matrix inequality (NMIL) constraints. The optimization problem is solved by an ICOA. Finally, the simulation results show the effectiveness of the proposed method. The saturation situation can be relieved within a short time and the satisfactory control performance is attained by the presented method.