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Table 4 Comparison of the different fal functions used in the conventional ADRC

From: Fault ride-through capability improvement in a DFIG-based wind turbine using modified ADRC

The type of fal function

Performance against the rising and falling edges of the input square signal

Performance against the step disturbances

The amount of calculations used during the simulation

Default fal

Conventional

Conventional

Conventional

falarcsinh

Much better than default fal

More robust than the default fal

Less than default fal (because it has one less rule)

falarctan

Better than falarcsinh

faltanh

Similar to falarctan and better than falarcsinh