gain-scheduled h_2/h_∞ autopilot design with regional pole placement constraints: an lmi-based approach

In this paper, a gain-scheduled three-loop autopilot is designed for the pursuit system that can satisfy the mixed h₂/h∞ performance and time-domain constraints. the gain-scheduled autopilot problem was first converted into a state-feedback control problem for linear parameter varying (lpv) systems and then, a control method was proposedusing the linear matrix inequality (lmi) approaches. the new approaches could satisfy the mixed h2/h∞ performance and regional pole placement constraints and ensure no constraints on system matrices. the final gain-scheduled autopilot which can promise greater stability and performance for the entire parameter range was calculated using the interpolation of the finite number of fixed controllers. simulation results showed theed method in designing the three-loop autopilot.