Figures & data
Fig. 1. Configuration of the multivariable feedback system.
Fig. 2. l.s(r): Nyquist contour for Lyapunov/asymptotical stability.
Fig. 3. _ε.s;: Nyquist contour for exponential stability.
Fig. 4. d.s: Nyquist contour for
-stability.
Fig. 5. Conceptual illustration of relationships among ,
1 and
2.
Fig. 6. Cart with inverted pendulum.
Fig. 7. Nyquist locus and regularized Nyquist locus for Case (a).
Fig. 8. Nyquist locus and regularized Nyquist locus when =
l.s(r).
