Figure 8

Effect of frequency ratio fr on the system frequency response function. (a) System based on NSID-1. (b) System based on NSID-2. (c) System based on NSID-1. (d) System based on NSID-2

Effect of frequency ratio fr on the system frequency response function. (a) System based on NSID-1. (b) System based on NSID-2. (c) System based on NSID-1. (d) System based on NSID-2