Regular Papers

International Journal of Control, Automation and Systems 2014; 12(5): 1011-1017

Published online August 30, 2014

https://doi.org/10.1007/s12555-013-0432-y

© The International Journal of Control, Automation, and Systems

A Guidance Law with Finite Time Convergence Considering Autopilot Dynamics and Uncertainties

Gui-Lin Li*, Han Yan, and Hai-Bo Ji

University of Science and Technology of China

Abstract

Taking into consideration both the autopilot dynamics and uncertainties, this paper proposes a finite time convergent guidance law for homing missile to intercept a maneuvering target. Firstly, an exact observer (differentiator) is employed to estimate the target maneuvers in finite time. Then, a fini-te time convergent guidance law is designed based on the existing finite time sliding-mode control the-ory. It is proved that the line-of-sight (LOS) angular rate converges to zero in finite time under the pro-posed guidance law. Compared with the existing finite time guidance laws, this guidance law can com-pensate for the effects of the autopilot dynamics and uncertainties, and the information used for feed-back control is much easier to obtain. Finally, simulation results show that our scheme, as a finite time convergent algorithm, has strong robustness to bounded disturbances.

Keywords Autopilot dynamics, finite time convergence, guidance law, maneuvering target, robustness, uncertainties.

Article

Regular Papers

International Journal of Control, Automation and Systems 2014; 12(5): 1011-1017

Published online October 1, 2014 https://doi.org/10.1007/s12555-013-0432-y

Copyright © The International Journal of Control, Automation, and Systems.

A Guidance Law with Finite Time Convergence Considering Autopilot Dynamics and Uncertainties

Gui-Lin Li*, Han Yan, and Hai-Bo Ji

University of Science and Technology of China

Abstract

Taking into consideration both the autopilot dynamics and uncertainties, this paper proposes a finite time convergent guidance law for homing missile to intercept a maneuvering target. Firstly, an exact observer (differentiator) is employed to estimate the target maneuvers in finite time. Then, a fini-te time convergent guidance law is designed based on the existing finite time sliding-mode control the-ory. It is proved that the line-of-sight (LOS) angular rate converges to zero in finite time under the pro-posed guidance law. Compared with the existing finite time guidance laws, this guidance law can com-pensate for the effects of the autopilot dynamics and uncertainties, and the information used for feed-back control is much easier to obtain. Finally, simulation results show that our scheme, as a finite time convergent algorithm, has strong robustness to bounded disturbances.

Keywords: Autopilot dynamics, finite time convergence, guidance law, maneuvering target, robustness, uncertainties.

IJCAS
July 2024

Vol. 22, No. 7, pp. 2055~2340

Stats or Metrics

Share this article on

  • line

Related articles in IJCAS

IJCAS

eISSN 2005-4092
pISSN 1598-6446