Output-feedback gain-scheduled control for missile autopilot

This paper mainly investigates the gain-scheduled autopilot design for missile longitudinal dynamics. The nonlinear missile dynamics are transformed to an equivalent linear parameter varying system via a linear parameter varying transformation. There is no ignored nonlinear term such that the linearization errors can be avoided. Gain-scheduled control can effectively cope with the influence resulted from external disturbance and noise. According to the operational conditions, gain-scheduled controlled system is able to select the suitable gain scheduling process to achieve the desired goal. In this paper, the addressed controllers include fixed-order controller, PI controller and full-order controller. The external disturbance is considered, where the gain-scheduled robust controllers are derived by employing certain optimization problems in the form of linear matrix inequalities.