Servo system controller of rocket engine based on Characteristic model

Servo system controller based on characteristic model was proposed for the new high-thrust rocket engine. Firstly, the characteristic modeling method was introduced and the range of parameters was discussed. Secondly, artificial bee colony algorithm was employed to estimate the characteristic model parameters of servo system in real time under the condition of equivalent output of characteristic model and actual system. Finally, golden section adaptive control law was introduced to stabilize the close-loop system in the process of parameters estimation, feedforward tracking control law, logical integral and logical derivative control law were also used to improve the performance of servo system. Simulation results demonstrate that the servo system controller can guarantee the accurate tracking of command and robustness to model uncertainty. ©, 2015, Journal of Solid Rocket Technology. All right reserved.