What is the meaning of a system with fractional order greater than 1?

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Is it necessary to covary exogenous constructs in a structural model?

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Emmanuel Gonzalez

A fractional differential equation with an order between 1 to 2 can be stable if you can ensure that the poles are in the left-half plane of the complex plane. There is a paper (I forgot who the author is) showing that stable systems of orders between 1 and 2 exhibit overshooting property in its transient response, which is desirable in many engineering applications.

Seng-Kin Lao

Dear Prof Gonzalez,

Thanks for your comment. It's really helpful.

Regards,

Seng-Kin

Cj Nev

Dr. Gonzalez, Is overshooting also desirable in elevators?