Integrated H∞ filtering bumpless transfer control for switched linear systems

The integrated H-infinity filtering bumpless transfer control problem for switched linear systems is studied in this paper. The target is to attain the H-infinity filtering property of the switched linear systems via switchings, while reducing the control bumps induced by switchings. First, a novel description of the bumpless transfer performance is presented, quantifying the suppression level on the control bumps from both relative and absolute viewpoints. Then, a switching logic, a collection of filters and filter-based controllers are jointly designed to attain this target. Further, a criterion which ensures not only the H-infinity filtering property but also the bumpless transfer performance is developed. Finally, an application on a turbofan engine control system model is offered, verifying the efficiency of the developed integrated H-infinity filtering bumpless transfer control strategy. (C) 2019 ISA. Published by Elsevier Ltd. All rights reserved.