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This paper presents an approach to improve the stability of three-axis stabilized satellite with rotating payloads from a disturbance identification perspective. Based on steady-state output-only and the system transfer function, the unknown external and internal disturbance torques are identified in a closed loop without persistent excitation. The modified eigensystem identification algorithm (ERA)...
The problem of optimal vibration control for time-delay systems is considered by using the sliding mode control approach. The delayed system is transformed into a non-delayed one by using functional transformations. The optimal sliding surface and the sliding controller are derived from a Riccati equation and a Sylvester equation. The feedforward control compensates for the effect of disturbance....
The disturbance rejection problem for linear systems with both state delay and control delay is considered. Using a model transformation, the time-delay system is transformed into a nondelayed system. The disturbance rejection control law is obtained by solving its optimal regulation problem. A dynamic compensator is designed, which is combined by an internal model corresponding to the disturbances...
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