These functions calculate fractional or complex order derivatives, when the order changes with time. Riemann-Liouville, Caputo and Grünwald-Letnikoff definitions are provided; the three variations considered by Lorenzo and Hartley are considered. Fuzzy supervised implementations in Simulink, based upon Oustaloup's Crone approximations, are also provided.
Duarte Valério (2022). Variable Order Derivatives (https://www.mathworks.com/matlabcentral/fileexchange/24444-variable-order-derivatives), MATLAB Central File Exchange. Retrieved .
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