Ioannis Dermitzakis

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The present work develops a method to determine higher-order corrections to the pi criterion, derived from basic results of Center Manifold theory. The proposed method is based on solving the Center Manifold PDE via power series. The advantage of the proposed approach is the improvement of the accuracy of the pi criterion in predicting performance under(More)
The frequency-dependent pi criterion of Bittanti et al. [7] is a very important tool that has been used extensively in applications, to predict potential performance improvement under periodic forcing in a nonlinear system. The pi criterion is local in nature and provides an approximate formula for the performance index under small-amplitude periodic(More)
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