Abstract:

A control strategy was proposed for the agile missile with the blended lateral thrust and aerodynamic surface control based on the active disturbancerejection control(ADRC) and the dynamic control allocation. An ADRC based controller was designed using the longitudinal dynamic model of the agile missile to obtain the control moment required by the attack angle of the missile. The required control moment are mapped into the respective control commands on the aerodynamic deflector and the thrust engine array using the dynamic control allocation to realize the fast and accurate tracking of the attack angle command of the missile. The ADRC based controller is insentive to the model parameter variation, applicable to the condition of large aerodynamic disturbance of the lateral jet flow of the missile. The dynamic control allocation algorithm can give appropriate allocation between the aerodynamic deflection and the lateral thruster taking into account of the dynamic characteristics and the constraints of both kinds of actuators. The proposed blended control strategy can fast track the attack angle command accurately, providing a basis for the design of agile missile control system with lateral thrust and aerodynamic controls.

Key words: control and navigation technology of aerocraft, blended control strategy, active disturbancerejection control (ADRC), dynamic control allocation, lateral thrust, agile missile