Abstract
This tutorial paper focuses on a number of designs for perturbation (input) signals for system identification; all of the signals can be designed using software readily available on the World Wide Web. Pseudorandom signals have fixed spectra, and both binary and multilevel signals based on maximum-length sequences are discussed. Other classes of pseudorandom binary signals that greatly increase the number of available signal periods are described. Computer-optimized signals have spectra that can be specified by the user, and the paper deals with three types – multisine (sum of harmonics) signals, and binary and multilevel multiharmonic signals. Perturbation signal quality measures are also considered in the paper.
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