Study of missile reentry dynamic decoupling control based on variable structure robustness compensating

There exists aerodynamic coupling between yawing channel and roll channel in the process of missile large angle of attack reentry. The dynamic decoupling control was adopted, and for the parameter sensitivity disadvantage of dynamic decoupling, the variable structure robust compensating control was proposed to attenuate the remaining coupling to a suitable level, and achieve an H_∞ tracking performance index. Theory analysis and digital simulation show that the control system attenuates the remaining coupling effectively, and has a good robustness.