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In this paper, a composite control method, consisting of a feedforward compensation part based on disturbance observer (DOB) and a feedback regulation part based on finite time controller, is proposed for 6DOF spacecraft formation control. The design of the composite controller can be divided into two steps: firstly, a continuous finite time controller is designed to stabilize the closed-loop spacecraft...
In this paper, the finite-time tracking problem is investigated for a permanent magnet synchronous motor (PMSM) and a continuous finite-time controller is designed. The whole tracking error system is considered as a cascaded system. Two continuous finite-time stabilizing controllers are designed for two subsystems respectively. Then finite-time stability results for cascaded systems are employed to...
The design of a continuous finite-time controller for bank-to-turn(BTT) missiles is considered in this work. The proposed controller allows that roll rate and angle of attack can track the desired commands in finite-time with sideslip angle maintained in a small degree range. Based on input/output(I/O) feedback linearizaiton technique and finite-time stability results for homogenous system, a continuous...
In this paper, we discuss the classical problem of attitude stabilization for a rigid spacecraft with external disturbances. Almost all the control laws for attitude stabilization problem in the literature can only guarantee at best exponential convergence of the attitude with infinite settling time. We employ finite-time control techniques including terminal sliding mode approach and continuous finite-time...
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