Journal ArticleDOI
The application of disturbance observer-based sliding mode control for magnetic levitation systems:
Z. G. Sun,Norbert C. Cheung,Shi Wei Zhao,W.C. Gan +3 more
- Vol. 224, Iss: 8, pp 1635-1644
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TLDR
In this article, a sliding mode controller is proposed, with a simple yet effective disturbance observer to perform disturbance rejection, and the simulation results and the experimental results verify the validity of the robust controller.Abstract:
A control algorithm for the position tracking of a magnetic levitation system is presented in this article. The magnetic levitation system is well known for its non-linear dynamic characteristics and open-loop instability. The external disturbances will deteriorate the dynamic performance of the magnetic levitation system, and may give rise to system instability. This problem triggers enormous interests in designing various controllers for the non-linear dynamic system. In this article, a magnetic levitation system is first modelled. Then, a sliding mode controller is proposed, with a simple yet effective disturbance observer to perform disturbance rejection. Both the simulation results and the experimental results verify the validity of the robust controller.read more
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References
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Journal ArticleDOI
A robust MIMO terminal sliding mode control scheme for rigid robotic manipulators
TL;DR: A robust MIMO terminal sliding mode technique and a few structural properties of rigid robotic manipulators are developed so that the output tracking error can converge to zero in a finite time, and strong robustness with respect to large uncertain dynamics can be guaranteed.
Journal ArticleDOI
Modeling and nonlinear control of magnetic levitation systems
A. El Hajjaji,Mustapha Ouladsine +1 more
TL;DR: A nonlinear model for magnetic levitation systems which is validated with experimental measurements and a real-time implementation of this model based on differential geometry is developed.
Journal ArticleDOI
Design and analysis of the nonlinear feedback linearizing control for an electromagnetic suspension system
SungJun Joo,Jin-Ho Seo +1 more
TL;DR: This paper presents some results on the robust stabilization of a class of feedback linearizable nonlinear single-input/single-output (SISO) systems exhibiting parametric uncertainty and analysis and implementation of nonlinear feedback linearizing control for an electromagnetic suspension (EMS) system.
Journal ArticleDOI
Brief Adaptive robust nonlinear control of a magnetic levitation system
Zi-Jiang Yang,Michitaka Tateishi +1 more
TL;DR: The combined adaptive and robust approach helps to overcome some well-known practical problems such as high-gain feedback of the robust controller, and poor transient performance of the adaptive controller, so that better control performance can be achieved compared to the case where either is employed alone.
Journal ArticleDOI
Robust servo-system based on two-degree-of-freedom control with sliding mode
Yasutaka Fujimoto,Atsuo Kawamura +1 more
TL;DR: Through simulations and experiments, it is proved that the introduction of nonlinear control (sliding mode) drastically improves the disturbance suppression characteristics of a linear system (two-degree-of-freedom control).