Graphical Nonlinear System Analysis

Thomas Chaffey, Fulvio Forni, Rodolphe Sepulchre

We use the recently introduced concept of a Scaled Relative Graph (SRG) to develop a graphical analysis of input-output properties of feedback systems. The SRG of a nonlinear operator generalizes the Nyquist diagram of an LTI system. In the spirit of classical control theory, important robustness indicators of nonlinear feedback systems are measured as distances between SRGs.

Knowledge Graph



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