Reconfiguration by Disturbance Decoupling

Abstract

This chapter addresses the strong reconfiguration goal for plants after actuator faults. The objective is to find a reconfigured block that makes the external output of the reconfigured control loop match the output of the nominal control loop. The approach builds on the virtual actuator, designed in Chap. 8 to stabilise a plant after actuator faults. In contrast to the reconfiguration problems treated earlier, this goal does not lead to an equivalent controller design problem. Instead, the problem can be transformed into a disturbance decoupling problem with stabilisation, which belongs to a different class of problems. Known approaches can be used to find a solution.