Fractional Order Sliding Mode Decoupling of Rotating Missile Control Coupling Aiming at the problem of control coupling caused by the dual-channel actuator of missile rotating around its longitudinal axis,a decoupling method based on the sliding mode variable structure control principle is proposed in order to avoid inverting transfer function matrix.By analyzing the state space model of the dual-channel coupled actuator,the corresponding sliding mode control law is designed.In order to reduce the chatter of the sliding mode control method,the sliding mode control principle and the fractional order calculus theory are combined to design a fractional order sliding mode decoupling controller.Simulation results show that the fractional order sliding mode decoupling controller can solve the problem of poor robustness of the traditional frequency domain compensation decoupling method to parameter perturbation,and reduce the chatter of the sliding mode control method.