Virtual Free-Volume Revised Method and Adaptive Control for Solid Ducted Rockets

Abstract

The response difference between the classical mathematical model of a ducted rocket and a real experiment is compared in this study, and a new revised method is proposed based on the free volume. A virtual free volume that is related to the real free volume is built to eliminate the discrepancy between the model and experiment, and a possible explanation of virtual free volume is carried out. In addition, design constraints and variation characteristics of the ducted rocket control system are analyzed. Furthermore, a radial basis function (RBF) adaptive control method is proposed to deal with the variation. Finally, hardware in a loop simulation device for the ducted rocket control system is presented, and its reliability is proved by analysis and comparison with a direct-connected ground test, and a serial simulation test that consistent with the numerical simulation is carried out to verify the validation of the controller.