Abstract | ||
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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 |
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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 Maione | 1 | 54 | 12.37 |