A Reference-Optimizing Antiwindup Control for Input-Constrained Systems
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Date
2019
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Publisher
IEEE Conference on Control, Decision and Information Technologies
Abstract
Control limits due to saturation constraints may
result in the directionality problem in addition to the controller
windup effect. In solving the directionality problem, this paper
explores the concept of modifying the reference signal to be an
element of the maximal output admissible set of the closedloop
dynamics. This is achieved by an online constrained
optimization of a tracking-related cost function associated
with the closed-loop system. The design procedure for this
reference-optimizing directional compensator is applicable to
most existing antiwindup schemes. The effectiveness of the
proposed control structure is demonstrated via simulation of
benchmark case study examples.