Design of Robust Control System for Flexible Missile Based on μ-Synthesis

Abstract

Based on the robust control theory, aiming at the pneumatic servo elastictiy problem of flexible missile, this paper carries out the control system research. By establishing the missile rigid-elastic coupling full parameter uncertainty model, the μ-synthesis robust control system is designed based on the traditional three-loop control structure. Frequency domain analysis shows that the designed control system has strong robustness and is enough to deal with the strong uncertainty of flexible missile. Time domain simulation results show that, comparing with the classical PID control system, the μ-synthesis robust control system ensures the time-domain index, the first-order vibration amplitude of the missile body is reduced to 10%, and the attenuation time is shortened to about 0.5 s, which effectively suppresses the elastic vibration of the missile.

Keywords

• |μ-synthesis|robust control|flexible missile|pneumatic servo elasticity|vibration suppression