A generalized control law for uniform, global and exponential magnetic detumbling of rigid spacecraft

Nicolas Petit (1) , Ioannis Sarras (2)

1 CAS - Centre Automatique et Systèmes
2 DTIS, ONERA, Université Paris Saclay [Palaiseau]

The problem of magnetic detumbling, also known as magnetic momentum unloading, is considered. The objective is to stabilize a rigid spacecraft angular velocity to zero only through magnetic actuation, i.e. magneto-torquers. We propose a generalized control law that is uniformly, globally exponentially stabilizing (UGES) and show that the celebrated b-dot law is one particular case of this law. Furthermore, we provide an explicit (time-varying) strict Lyapunov function to establish the stability claim.

Mots clés: satellite control; time-varying systems; Lyapunov stability

Domaines: Automatique / Robotique

Nicolas Petit, Ioannis Sarras. A generalized control law for uniform, global and exponential magnetic detumbling of rigid spacecraft. IFAC 2020 World Congress, Jul 2020, Virtuel, Germany. ⟨hal-03021760⟩