Abstract
Abstract We are considering the problem of identifying Wiener systems that includes memoryless nonlinearities. The focus is made on the determination of the system nonlinearity which is not necessarily invertible, smooth or parametric. To this end, a frequency approach is developed, that investigates the system output extrema. In the case where the nonlinearity is strictly monotonic, a simple experiment is performed involving the application of a sine signal. In the general case, such an experiment is repeated a few times with different amplitudes.
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