Reduced Effort Control Laws for Underactuated Rigid Spacecraft
نویسندگان
چکیده
Recent results show that a nonsmooth time invariant feedback control law can be used to stabi lize an axi symmetric rigid body using only two con trol torques to the zero equilibrium This method however may require a signi cant amount of con trol e ort especially for initial conditions close to an equilibrium manifold In this paper we propose a control law which reduces the control e ort re quired The new control law renders the equilibrium manifold unstable and drives the trajectories of the closed loop system into a safe region where the original control law can be subsequently used
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