Adaptive Tracking Control of Hypersonic Re-entry Vehicle with Uncertain Parameters

The problem of hypersonic re-entry vehicle attitude control with uncertain parameters is addressed. Aimed at a class of affine nonlinear system, adaptive control with observer is proposed. It is proved that observer error of uncertain parameters and tracking error of system output can uniformly asymptotically converge to zero. For implementation on hypersonic re-entry vehicle, two-loop attitude control is designed with aerodynamic derivatives considered as uncertain parameters. Simulations on 6DOF model of HRV show that the proposed adaptive control can keep good tracking performance in case of uncertain parameters.