Unity sliding mode controller design for active magnetic bearings system

Other Title(s)

تصميم مسيطر منزلق أحادي لمنظوظة محامل مغناطيسية فعالة

Joint Authors

al-Samirrai, Shibli Ahmad
Mahmud, Ali Majid
Rafat, Safanah Mazhar

Source

Journal of Engineering

Issue

Vol. 21, Issue 6 (30 Jun. 2015), pp.90-107, 18 p.

Publisher

University of Baghdad College of Engineering

Publication Date

2015-06-30

Country of Publication

Iraq

No. of Pages

18

Main Subjects

Mechanical Engineering

Topics

Abstract EN

Active Magnetic Bearings (AMBs) are progressively being implemented in a wide variety of applications.

Their exclusive appealing features make them suitable for solving traditional rotorbearing problems using novel design approaches for rotating machinery.

In this paper, a linearized uncertain model of AMBs is utilized to develop a nonlinear sliding mode controller based on Lyapunov function for the electromechanical system.

The controller requires measurements of the rotor displacements and their derivatives.

Since the control law is discontinuous, the proposed controller can achieve a finite time regulation but with the drawback of the chattering problem.

To reduce the effect of this problem, the gain of the unite vector term is evaluated as a function to state variables.

As a result the proposed discontinuous controller regulates the state to the origin in a finite time in spite of the uncertainty in system model and the presence of external disturbances.

These results are demonstrated via numerical simulations.

In addition the chattering in system response in these results is within the acceptable range.

American Psychological Association (APA)

Rafat, Safanah Mazhar& al-Samirrai, Shibli Ahmad& Mahmud, Ali Majid. 2015. Unity sliding mode controller design for active magnetic bearings system. Journal of Engineering،Vol. 21, no. 6, pp.90-107.
https://search.emarefa.net/detail/BIM-611300

Modern Language Association (MLA)

Rafat, Safanah Mazhar…[et al.]. Unity sliding mode controller design for active magnetic bearings system. Journal of Engineering Vol. 21, no. 6 (Jun. 2015), pp.90-107.
https://search.emarefa.net/detail/BIM-611300

American Medical Association (AMA)

Rafat, Safanah Mazhar& al-Samirrai, Shibli Ahmad& Mahmud, Ali Majid. Unity sliding mode controller design for active magnetic bearings system. Journal of Engineering. 2015. Vol. 21, no. 6, pp.90-107.
https://search.emarefa.net/detail/BIM-611300

Data Type

Journal Articles

Language

English

Notes

Includes appendices : p. 100-107

Record ID

BIM-611300