Compensation of actuator dynamics in nonlinear missile control

This brief presents an approach to the compensation of the actuator dynamics in nonlinear missile control. In general, actuator dynamics are not considered in nonlinear missile control systems. Here, we analyzed the influences of actuator dynamics on the nonlinear missile controller and found that the second-order actuator dynamics showed risks of potentially destabilizing the overall system. Thus, to accommodate for the influence of the actuator dynamics, a compensator is proposed where the information of the nonlinear control input and the actual fin deflection is incorporated. We also conducted performance and stability analysis for the proposed control system, including actuator dynamics. We were able to confirm the validity of the proposed approach based on simulation results for the first- and second-order actuator dynamics.

[1]  Christopher D'Souza,et al.  Missile flight control with dynamic inversion and structured singular value synthesis , 1994 .

[2]  Ronald A. Hess,et al.  Flight control system design with rate saturating actuators , 1996 .

[3]  Zhihua Qu,et al.  Dynamic robust recursive control design and its application to a nonlinear missile autopilot , 1997, Proceedings of the 1997 American Control Conference (Cat. No.97CH36041).

[4]  Jinho Kim,et al.  Nonlinear model inversion control for bank-to-turn missile , 1995 .

[5]  Ronald A. Hess,et al.  Robust, Decoupled, Flight Control Design with Rate-Saturating Actuators , 1998 .

[6]  Seon-Gab Kim,et al.  Output-redefinition based on robust zero dynamics = 강인 제로 동역학에 기초한 출력재정의 기법 , 1998 .

[7]  J.R. Cloutier,et al.  Robust feedback linearization approach to autopilot design , 1992, [Proceedings 1992] The First IEEE Conference on Control Applications.

[8]  Dongkyoung Chwa,et al.  New parametric affine modeling and control for skid-to-turn missiles , 2001, IEEE Trans. Control. Syst. Technol..

[9]  Pramod P. Khargonekar,et al.  Missile Autopilot Designs Using H8 Control with Gain Scheduling and Dynamic Inversion , 1998 .

[10]  Min-Jea Tahk,et al.  Plant Inversion Control of Tail-Controlled Missiles , 1997 .

[11]  In-Joong Ha,et al.  Autopilot design for highly maneuvering STT missiles via singular perturbation-like technique , 1999, IEEE Trans. Control. Syst. Technol..

[12]  In-Joong Ha,et al.  Missile autopilot design via functional inversion and time-scaled transformation , 1997, IEEE Transactions on Aerospace and Electronic Systems.

[13]  Zhihua Qu,et al.  Design and evaluation of robust nonlinear missile autopilots from a performance perspective , 1995, Proceedings of 1995 American Control Conference - ACC'95.