Variable Order Derivatives

版本 1.4.0.0 (139.1 KB) 作者: Duarte Valério
Functions for implementing fractional or complex order derivatives, when the order changes with time
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更新时间 2010/5/10

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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.

引用格式

Duarte Valério (2025). Variable Order Derivatives (https://www.mathworks.com/matlabcentral/fileexchange/24444-variable-order-derivatives), MATLAB Central File Exchange. 检索时间: .

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参考作品: Gamma

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版本 已发布 发行说明
1.4.0.0

Files for variable order, linear phase Crone approximations have been added.
1.3.0.0

1) A nasty bug affecting variable complex order derivatives was fixed. 2) C^\infty interpolation of zeros and poles now uses exact Crone formulas only.
1.2.0.0

Required function gamma.m (from http://www.mathworks.com/matlabcentral/fileexchange/3572) now included.
1.1.0.0

Simulink files for complex orders now provided.
1.0.0.0