Variant aircraft wingspan and control strategy collaborative design method

The invention discloses a variant aircraft wingspan and control strategy collaborative design method, mainly aims to optimize the control performance of an aircraft system based on a strategy iteration thought, and belongs to the field of intelligent control. The method comprises the following design steps: establishing a variant aircraft model; determining a solving target based on the performance function; determining key solving conditions; and designing a strategy iteration algorithm. The method aims at a type of variant aircrafts, focuses on the influence of wingspan parameters, constructs a longitudinal nonlinear dynamic model, defines performance functions related to disturbance, and designs an iterative algorithm based on a Sum-of-Square technology by converting a Hamilton-Jacobi equation into an optimization problem of nonlinear inequality constraint, so that the problem that the Hamilton-Jacobi equation is difficult to solve is solved. In order to optimize the H-infinity control performance, a wings