On fault tolerant control structures incorporating fault estimation

Abstract

The paper provides the minimal necessary modifications of linear matrix inequality conditions for the mixed H 2 /H ∞ control design as well as for the augmented observer-based fault estimation to be mutually compatible in joint design of integrated fault estimation and fault tolerant control. To be possible, within this integration, to design the controller which guarantees a pre-specified H ∞ norm disturbance attenuation level, the design conditions has to be regularized using the H 2 performance index and, moreover, augmented fault observer must be of enforced dynamics. Analyzing the ambit of performances given on the mixed H 2 /H ∞ design, the joint design conditions are formulated as a minimization problem subject to convex constraints expressed by a system of LMIs. The feasibility of the conditions is demonstrated by a numerical example.

Sensor and Actuator Fault Tolerant Control of Grid-Tied Microgrid

“…Moreover, there is no studies to address the simultaneous sensor and actuator FTC. In addition, researchers and scientists from a wide range of disciplines are interested in studying FTC strategies for sensor and actuator faults [10], [11], [13]- [15].…”