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A guidance law with finite time convergence considering autopilot dynamics and uncertainties

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  • Control Applications
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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 finite time convergent guidance law is designed based on the existing finite time sliding-mode control theory. It is proved that the line-of-sight (LOS) angular rate converges to zero in finite time under the proposed guidance law. Compared with the existing finite time guidance laws, this guidance law can compensate for the effects of the autopilot dynamics and uncertainties, and the information used for feedback 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.

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Author information

Authors and Affiliations

  1. Department Automation, School of Information Science and Technology, University of Science and Technology of China, Hefei, Anhui, 230027, P. R. China

    Gui-Lin Li & Hai-Bo Ji

  2. Science and Technology on Space Intelligent Control Laboratory, Beijing Institute of Control Engineering, Beijing, 100190, China

    Han Yan

Authors
  1. Gui-Lin Li
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  2. Han Yan
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  3. Hai-Bo Ji
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Corresponding author

Correspondence to Gui-Lin Li.

Additional information

Gui-Lin Li is a Ph.D. candidate at the Department of Automation, University of Science and Technology of China. Her research interests include nonlinear control, navigation and guidance.

Han Yan received his B.Eng. and Ph.D. degrees in Control Science and Control Engineering from University of Science and Technology of China in 2008 and 2013, respectively. He is currently an Engineer in Science and Technology on Space Intelligent Control Laboratory, Beijing Institute of Control Engineering, Beijing, China. His research interests include nonlinear and control theories, and their applications to the guidance and control.

Hai-Bo Ji is a Professor at the Department of Automation, University of Science and Technology of China. He received his Ph.D. degree in Mechanical Engineering from Beijing University in 1990. His research interests include nonlinear control and applications, navigation and guidance.

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Li, GL., Yan, H. & Ji, HB. A guidance law with finite time convergence considering autopilot dynamics and uncertainties. Int. J. Control Autom. Syst. 12, 1011–1017 (2014). https://doi.org/10.1007/s12555-013-0432-y

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

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