Title :
Application of a Modified Fast Fourier Transform to Calculate Human Operator Describing Functions
Author_Institution :
Office of Control Theory and Appl. NASA Elec. Res. Center Cambridge, Mass. 02139
Abstract :
A modified fast Fourier transform (FFT) is used in a hybrid computer program to permit processing of tracking data during a run to yield the human operator´s describing function almost immediately after the data-taking period. The computer processing time is substantially reduced at no cost in accuracy.
Keywords :
Aerodynamics; Control systems; Displays; Fast Fourier transforms; Frequency; Humans; Man machine systems; NASA; Sampling methods; Shape;
Journal_Title :
Man-Machine Systems, IEEE Transactions on
DOI :
10.1109/TMMS.1969.299913
