面对称火箭多通道耦合下的多变量自适应PID控制OA

Aiming at the multi-channel coupling effect,interference and uncertainty of the dynamics of the plane-symmetric rocket,as well as the performance requirements of large-angle rapid maneuvering for the plane-symmetric rocket mission,a multivariable adaptive PID tracking control method is proposed.Different from the method of traditional rocket which ignores the channel coupling and designs single variable controller for each channel,the multivariable joint control design is carried out for three channels.Firstly,the performance constraint function is introduced to constrain the transient and steady-state performance of the tracking error,and a multivariable adaptive PID controller is designed to improve the transient response of the system.Then,a norm adaptive estimation algorithm is designed to compensate for the interference and uncertainty.Finally,the engine swing angle amplitude constraint is considered for control distribution.The theoretical correctness of the proposed method is proved by the Lyapunov stability theory.The simulation results show that this control scheme has higher steady-state accuracy and faster convergence speed than that of the single variable adaptive controller,and superior transient performance compared to multivariable adaptive PI control.The Monte Carlo simulation verifies the robustness of the controller to interference and uncertainty.