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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, we consider the problem of global finite-time stabilization for a class of upper-triangular systems. First, we use the generalized adding a power integrator technique to design a homogeneous controller which locally finite-time stabilizes the upper-triangular systems. Then, we integrate a series of nested saturation functions with the homogeneous controller and adjust the saturation...
In this paper, finite-time stability and stabilization problems for switched linear systems are discussed. Firstly, the concept of finite-time stability is extended to switched linear systems. Then, based on the state transition matrix of the system, a necessary and sufficient condition for finite-time stability of switched linear systems is presented. For ease of reference, some sufficient conditions...
Conventional controllers for the nonholonomic systems all stabilize the closed loop system to a target point. In this paper, considering the nonholonomic chained form system, a control design approach based on set stabilization idea is proposed. The proposed control laws can asymptotically stabilize the closed loop system to a set of given target points. First, for the first-order subsystem, a state...
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