Impact angle control guidance laws using finite-time-convergence control methods

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This study deals with the design of the impact angle control guidance (IACG) laws using the finite-time convergence control (FTCL) methods. To design IACG laws, the guidance command is divided into two parts. The first part is the command to intercept the target by nullifying the miss distance. The second part is the command to satisfy the impact angle constraint only. Unlike the general tracking problems, the guidance problems, including IACG, can be regarded as the finite-time tracking problems. Namely, the terminal constraints should converge to the desired values before the target is intercepted. For accomplishing this goal, the concept of FTCL methods is utilized in this paper. To use the characteristics of FTCL methods enforcing a specific state variable to be zero for a given time, the impact angle error is defined as a state variable. The error dynamics of the impact angle is then derived. Finally, the proposed guidance commands are determined in a way to apply the concept of FTCL methods to the error dynamics of the impact angle. This study considers the two FTCL methods: the optimal error dynamics and the arbitrary time convergence control method. Finally, numerical simulations are performed to examine the characteristics of the proposed IACGs through FTCL methods. © 2021 IEEE.
Institute of Electrical and Electronics Engineers Inc.
Issue Date

29th Mediterranean Conference on Control and Automation, MED 2021, pp.997 - 1002

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AE-Conference Papers(학술회의논문)
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