The aircraft accident that happened over the last 10 years has been classified into six categories according to their main contributing factors. Those results would have been the same if the figures represented the last 30 years or just the last year. The category is the largest one. It represents 70% of the accident. This figure represents all the accidents where the crew could really have don...

In this paper we obtain information theoretical conditions for tracking in linear time-invariant control systems. We consider the particular case where the closed loop contains a channel in the feedback loop. The mutual information rate between the feedback signal and the reference input signal is used to quantify information about the reference signal that is available for feedback. This mutua...