Yet another example of where good predictions still lead to bad outcomes.
The Gap metric is a useful tool to compare hoe similar systems behave in closed loop.
see
El-Sakkary, Ahmed. "The gap metric: Robustness of stabilization of feedback systems." IEEE Transactions on Automatic Control 30.3 (1985): 240-247.
https://ieeexplore.ieee.org/abstract/document/1103926
The Gap metric is a useful tool to compare hoe similar systems behave in closed loop.
see
El-Sakkary, Ahmed. "The gap metric: Robustness of stabilization of feedback systems." IEEE Transactions on Automatic Control 30.3 (1985): 240-247.
https://ieeexplore.ieee.org/abstract/document/1103926