Analysis of memory bit errors induced by electromagnetic interference in closed-loop digital flight control systems

This paper employs mean square stability conditions for worst case and random memory bit-errors caused by high intensity electromagnetic (EM) disturbances to determine EM susceptibility of flight control systems. The perturbed closed-loop system is represented as a jump linear discrete-time system. This model is compared to other types of linear parameter varying representations. Two tests for EM susceptibility are presented and applied to a simple flight controller example. The second test, which uses the random bit-error interference model, is shown to be less conservative