Khac Duc Do1， Dang Hoe Nguyen2， Thanh Binh Nguyen3
1. School of Mechanical Engineering, University of Western Austra lia, WA 6009, Australia; 2. Vice-Rectoral Office, Thainguyen University of Technology, Thainguyen, Vietn am; 3. Dept. of Human Resource, University of Thainguyen, Thainguyen, Viet nam)
Abstract-In this paper, recent results controling nonlinear s ystems with output tracking error constraints are applied to the design of new t racking controllers for magnetic bearings. The proposed controllers can force th e rotor to track a bounded and sufficiently smooth reference trajectory asymptot ically and guarantee non-contactedness between the rotor and the stator of the magnetic bearings. Simulation results are included to illustrate the effectivene ss of the proposed controllers.
Key words-nonlinear system; output constraint; backstep ping; Lyapunov method
Manuscript Number: 1674-8042(2010)01-0010-07
dio: 10.3969/j.issn.1674-8042.2010.01.02
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