Robust Adaptive Integrator Backstepping Control for Quadrotor UAV Stabilization Under Unknown Mass Uncertainty

Document Type : Original Article

Author

Department of Electrical and Computer Engineering, Faculty of Electrical Engineering, Isfahan University of Technology, Isfahan, Iran

Abstract
Quadrotor unmanned aerial vehicles are highly nonlinear, underactuated, and strongly coupled systems whose performance is sensitive to physical parameter uncertainties. Among these uncertainties, mass variation is especially important because it directly affects the altitude dynamics through the thrust-to-mass ratio. In practical missions, the quadrotor mass may change due to payload variation, battery replacement, mounted equipment, or modeling errors. Therefore, designing a stabilizing controller that does not require exact prior knowledge of the vehicle mass is essential for improving flight reliability and robustness.

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Subjects

Volume 5, Issue 2
Summer 2026

  • Receive Date 03 July 2026
  • Revise Date 13 July 2026
  • Accept Date 14 July 2026