Integral state-feedback control of linear time-varying systems: A performance preserving approach

An integral extension of state-feedback controllers for linear time-varying plants is proposed, which preserves performance the nominal controller in unperturbed case. Similar to time-invariant state feedback with action, achieves complete rejection disturbances whose effective action on plant constant respect control input. Moreover, bounded-input bounded-state stability arbitrary shown. A modification preventing windup as well tuning guidelines are discussed. The efficacy proposed technique demonstrated simulation a two-tank system that linearized along reference trajectory.