FTC with Dynamic Virtual Actuators: Characterization via Dynamic Output Controllers and H∞ Approach

Abstract EN

The paper presents new conditions, adequate in design of dynamic virtual actuators and utilizable in fault-tolerant control structures (FTC) for continuous-time linear systems, which arestabilizable by dynamic output controllers.

Taking into account disturbance conditions and changes of variables in FTC after virtual actuator activation and applying the nominalcontrol scheme relating to the biproper dynamic output controller of prescribed order, the design conditions are outlined in terms of the linear matrix inequalities within the enhancedbounded real lemma forms.

Using a free tuning parameter in design, and with suitable choice of the controller order, the approach provides the way toobtain acceptable dynamics of the closed-loop system after activation of the dynamic virtual actuator.