Visualizing control systems performance: A fractional perspective

• Type: Article in International Scientific Journal
• Date: 2015

Authors

António Mendes Lopes (Author) FEUP; Tenreiro Machado, JAT (Author) Other

Journal

Title: Advances in Mechanical Engineering

Vol. 7

ISSN: 1687-8132

Publisher: SAGE

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 4 Citations

Other information

Authenticus ID: P-00J-ZY4

DOI: 10.1177/1687814015619831

Abstract (EN): This article presents a novel method for visualizing the control systems behavior. The proposed scheme uses the tools of fractional calculus and computes the signals propagating within the system structure as a time/frequency-space wave. Linear and nonlinear closed-loop control systems are analyzed, for both the time and frequency responses, under the action of a reference step input signal. Several nonlinearities, namely, Coulomb friction and backlash, are also tested. The numerical experiments demonstrate the feasibility of the proposed methodology as a visualization tool and motivate its extension for other systems and classes of nonlinearities.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8