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Output-reference tracking problem for discrete-time systems with input saturations

Output-reference tracking problem for discrete-time systems with input saturations

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Nonlinear state feedback controllers are exhibited for locally stabilising linear discrete-time systems with both saturating actuators and additive disturbances when the output must track a certain time-varying reference level. The objective is to bring the steady-state error due to disturbances to zero, by using a saturated controller and a dead-zone function. The objective is two-fold: to determine both a stabilising controller and a region of the state space over which the stability of the resulting closed-loop system is ensured, when the controls are allowed to saturate.

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