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Compensation of actuator dynamics in nonlinear missile control

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3 Author(s)
Dongkyoung Chwa ; Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., South Korea ; Jin Young Choi ; J. H. Seo

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.

Published in:

IEEE Transactions on Control Systems Technology  (Volume:12 ,  Issue: 4 )