Reduced Attitude Control for Boresight Alignment With Dynamic Pointing Constraints

The problem of boresight alignment control is studied when multiple dynamic pointing constraints and angular velocity constraints exist during the maneuver. The tracking errors and dynamic pointing constraints are defined using the reduced attitude, which has only two degrees of freedom and avoids the singularity and redundancy description. An artificial potential function and a barrier Lyapunov function are employed to derive the feedback control law for attitude tracking scenario with no violation of the constraints and limitations. The stability analysis shows that the proposed control law guarantees the asymptotical convergence of the tracking errors. Numerical simulations are conducted to demonstrate the efficacy and performance of the presented control design under several different scenarios.