1 research outputs found
Dynamic output feedback H ∞ design in finite-frequency domain for constrained linear systems
This paper deals with the design problem of H∞ control for linear systems in finite-frequency (FF)
domain. Accordingly, the H∞ norm from the exogenous disturbance to the controlled output is reduced
in a given frequency range with utilizing the generalized Kalman–Yakubovic–Popov (gKYP) lemma. As
some of the states are hard or impossible to measure in many applications, a dynamic output feedback
controller is proposed. In order to meet practical requirements that express the limitations of the
physical system and the actuator, these time-domain hard constraints are taken into account in the
controller design. An algorithm terminating in finitely many steps is given to determine the dynamic
output feedback with suboptimal FF H∞ norm bound. The algorithm consists of solving a series of
linear matrix inequalities (LMIs). Finally, two case studies are given to demonstrate the effectiveness
and advantageous of the proposed method