1 research outputs found
Using the Best Linear Approximation With Varying Excitation Signals for Nonlinear System Characterization
Block oriented model structure detection is quite desirable since it helps to
imagine the system with real physical elements. In this work we explore
experimental methods to detect the internal structure of the system, using a
black box approach. Two different strategies are compared and the best
combination of these is introduced. The methods are applied on two real systems
with a static nonlinear block in the feedback path. The main goal is to excite
the system in a way that reduces the total distortion in the measured frequency
response functions to have more precise measurements and more reliable decision
about the structure of the system.Comment: 9 pages, 14 figure