Discussion on: 'Simple Fractional Order Model Structures and their Applications in Control System Design'

摘要

Fractional calculus is about the integration or differentiation of non-integer orders. The use of "fractional" is purely due to historical reasons [ 1 ]. Using fractional order differential equations is believed to be able to better characterize the nature around us. Using an integer order model is only for our own convenience. Depending on the scale on which we characterize the dynamics of a system, more and more evidences are found that using fractional order model is ubiquitous and unavoidable [1,2,3].