Identification of Coulomb Friction-Impeded Systems With a Triple-Relay Feedback Apparatus

This paper aims to identify friction-impeded servo-mechanical systems using a time-domain based approach with a multiple-relay feedback apparatus. By converting the closed-loop system into a triple-relay feedback system, switching conditions of a stable limit cycle are obtained. Following by this, s...

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Bibliographic Details
Published in:IEEE transactions on control systems technology 2012-05, Vol.20 (3), p.726-737
Main Authors: Chen, Si-Lu, Tan, Kok Kiong, Huang, Sunan
Format: Article
Language:English
Subjects:
Appeals
Applied sciences
Computer science
control theory
systems
Control systems
Control theory
Control theory. Systems
Coulomb friction
D.c. Machines
Electrical engineering. Electrical power engineering
Electrical machines
Exact sciences and technology
Feedback
Friction
Friction modeling
Fundamental areas of phenomenology (including applications)
hybrid systems
Limit-cycles
Mathematical analysis
Mathematical models
Mechanical contact (friction...)
Modelling and identification
Noise
Oscillators
Physics
relay feedback
Relays
Solid mechanics
Stability analysis
Stable oscillations
Structural and continuum mechanics
Switches
switching systems
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Description
Summary:This paper aims to identify friction-impeded servo-mechanical systems using a time-domain based approach with a multiple-relay feedback apparatus. By converting the closed-loop system into a triple-relay feedback system, switching conditions of a stable limit cycle are obtained. Following by this, stable oscillations are excited by choosing suitable relay gains. Hence, the level of Coulomb friction and other linear parameters are identified by numerically solving a set of equations with data from just a single limit cycle experiment. This method is also robust to measurement noise. Simulation and real-time experiments on a DC motor show the practical appeal of the proposed method.
ISSN:1063-6536
1558-0865
DOI:10.1109/TCST.2011.2143413