Title
Analog Realizations Of Fractional-Order Integrators/Differentiators A Comparison
Abstract
Non-integer differential or integral operators can be used to realize fractional-order controllers, which provide better performance than conventional PID controllers, especially if controlled plants are of non-integer-order. In many cases, fractional-order controllers are more flexible than PID and ensure robustness for high gain variations. This paper compares three different approaches to approximate fractional-order differentiators or integrators. Each approximation realizes a rational transfer function characterized by a sequence of interlaced minimum-phase zeros and stable poles. The frequency-domain comparison shows that best approximations have nearly the same zero-pole locations, even if they are obtained starting from different points of view.
Year
Venue
Keywords
2009
ICINCO 2009: PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE ON INFORMATICS IN CONTROL, AUTOMATION AND ROBOTICS, VOL 3
Non-integer-order operators, Fractional-order controllers, Rational approximation, Interlaced singularities
Field
DocType
Citations 
Differentiator,Control theory,Integrator,Control engineering,Engineering
Conference
1
PageRank 
References 
Authors
0.50
4
1
Name
Order
Citations
PageRank
Guido Maione15412.37