Adaptive Predefined-Time Attitude Stabilization Control of Space Continuum Robot

This brief investigates the predefined-time stabilization attitude control for multi-segment cable-driven space continuum robot system in the presence of external time-varying disturbances. By utilizing the theorem of practical predefined-time stability, an adaptive attitude controller based on a nonsingular terminal sliding mode is developed, so that the attitude error can converge into a small neighborhood of the origin within a predefined time. A suitable Lyapunov function is chosen to prove the stability of the robot system. The numerical simulation results demonstrate the effectiveness and superiority of the proposed control strategy.