Adaptive control

Inertia

Physics

Engineering

Control engineering

Mathematical analysis

Aerospace engineering

Settling time

Artificial intelligence

Attitude control

Nonlinear system

Step response

Singularity

Economics

Control (management)

Convergence (economics)

Spacecraft

Mathematics

Sliding mode control

Computer science

Control theory (sociology)

Economic growth

Fixed point

Quantum mechanics

Classical mechanics

IEEE Transactions on Industrial Informatics

The rapid attitude stabilization problem of flexible spacecraft with uncertain inertia and disturbances is investigated. In this article, a sliding mode-based fixed-time control approach is presented with a new fixed-time surface ensuring a faster convergence rate incorporated. This surface has no singularity and can guarantee the settling time to be independent of initial states. An adaptive fixed-time attitude control law is then synthesized, which is continuous and chattering free. It is rigorously proved that the states of the spacecraft attitude system can converge into a small neighborhood after fixed time. A numerical example is presented to validate that the designed scheme is efficient to perform attitude stabilization maneuvers rapidly, whereas high control accuracy is still provided.

Faster Fixed-Time Control of Flexible Spacecraft Attitude Stabilization