H∞Control for Flexible Spacecraft with Time-Varying Input Delay

Disturbance observer basedH∞ control for flexible spacecraft with time-varying input delay

*Correspondence: [email protected]; [email protected] 1School of Instrumentation Science and Opto-Electronics Engineering, Beihang University, Beijing, 100191, China 2School of Information and Control, Nanjing University of Information Science and Technology, Nanjing, 210044, China Abstract In this paper, a composite disturbance-observer-based control (DOBC) and H∞ control scheme is app...

Finite time stabilization of time-delay nonlinear systems with uncertainty and time-varying delay

In this paper, the problem of finite-time stability and finite-time stabilization for a specific class of dynamical systems with nonlinear functions in the presence time-varying delay and norm-bounded uncertainty terms is investigated. Nonlinear functions are considered to satisfy the Lipchitz conditions. At first, sufficient conditions to guarantee the finite-time stability for time-delay nonl...

Fault-Tolerant Attitude Control for Flexible Spacecraft with Input Saturation

Fault-tolerant constrained attitude controllers are proposed for flexible spacecraft in the presence of input saturation and actuator fault, as well as model uncertainty and external disturbance. Two input saturations, that is amplitude saturation and, amplitude and rate saturation are considered and simple and effective compensators are designed to deal with the effect of input saturation. Two...

T-S FUZZY MODEL-BASED MEMORY CONTROL FOR DISCRETE-TIME SYSTEM WITH RANDOM INPUT DELAY

A memory control for T-S fuzzy discrete-time systems with sto- chastic input delay is proposed in this paper. Dierent from the common assumptions on the time delay in the existing literatures, it is assumed in this paper that the delays vary randomly and satisfy some probabilistic dis- tribution. A new state space model of the discrete-time T-S fuzzy system is derived by introducing some stocha...

Robust output feedback stabilization for discrete-time systems with time-varying input delay