Abstract
In this study, we present a novel L 2 norm-based
preview tracking controller design for discrete-time periodic linear
parameter-varying (LPV) systems based on a linear fractional
representation (LFR). It also proposes a robust controller design method
using actions that are integral and preview to achieve excellent
tracking performance and output constraints assuming that the reference
signal may be previewe. First of all, an augmented error system (AES)
with future knowledge about related signals was performed for a linear
periodic system using LFR, transforming a control issue with the preview
leading to a stability issue. The proposed conditions depend on using
slack variables and decision matrices related to LFR to generate novel
preview control. Second, Lyapunov functions dependent on parameters and
full-block multipliers were addressed to achieve synthesis situations
that are less conservative for discrete-time periodic LPV/LFR systems,
which were expressed as linear matrix inequalities (LMIs) to produce
reliable output and condition feedback with preview actions. In the end,
the efficiency of the proposed control methods was demonstrated based on
two numerical cases.