Identification of Complex Order-distributions

Autor: Jay L. Adams, Tom T. Hartley, Carl F. Lorenzo
Rok vydání: 2008
Předmět:
Zdroj: Journal of Vibration and Control. 14:1375-1388
ISSN: 1741-2986
1077-5463
DOI: 10.1177/1077546307087443
Popis: This article discusses the identification of fractional systems using the concepts of complex order distribution. Based on the ability to define systems using complex order-distributions, it is shown that system identification in the frequency domain using a least-squares approach can be performed. A mesh is created to cover an area in the complex-order plane. The weighting of each block in the order-plane is selected to minimize the square-error between the frequency response of the system and the identified system. The identified systems have real time responses. Four examples, including both pure real-order systems and pure complex-order systems, are presented to demonstrate the utility of the identification method.
Databáze: OpenAIRE