Power Frequency: A Metric for Analyzing Pilot-in-the-Loop Flying Tasks

Crossover frequency is a parameter often used to characterize the pilot-vehicle system behavior for continuous control tasks with known forcing functions. However, for many tasks, such an input is not known, and in these cases cutoff frequency can be applied. While cutoff frequency is a useful parameter, it does not necessarily reflect pilot effort. Power frequency, derived from cutoff frequency via wavelet analysis, is introduced herein as a parameter that relates the frequency of pilot input with the intensity of that input.