A stateflow based simulation of UAV multi-mode flight control

How MATLAB, Simulink and stateflow can be used to design and realize a simulation platform for UAV multi-mode flight control system is presented. The simulation platform includes nonlinear dynamic model of UAV, control system and environment model which is to make the simulation more similar to the real flight environment. The environment model consists of wind shear submodel, atmosphere submodel and gravity submodel. In accordance with the design philosophy of navigation level, flight modes are regarded as different states in the finite state machine module which is for the logic control. The control module is divided into two subsystems which are longitudinal control subsystem and lateral control subsystem. In this way, the disturbance caused by the switch among different modes which share the same control law can be avoided. The simulation result demonstrates the validity of the stateflow based simulation platform of UAV multi-mode flight control.