State Feedback Sliding Mode Control for an Active Magnetic Bearing System
Yao-Wen Tsai1, Van Duc Phan2
1Prof. Yao-Wen Tsai, Department of Mechanical and Automation Engineering, Da-Yeh University, Taiwan R.O.C.
2Van Duc Phan, Department of Mechanical and Automation Engineering, Da-Yeh University, Taiwan R.O.C.
Manuscript received on August 10, 2016. | Revised Manuscript received on August 23, 2016. | Manuscript published on August 30, 2016. | PP: 18-21 | Volume-3 Issue-5, August 2016. | Retrieval Number: E0380083516
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© The Authors. Published By: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: This paper proposes the state feedback Sliding Mode Control (SMC) approach in order to control the nonlinear system. A nonlinear model of two degrees of freedom (DOF) of an Active Magnetic Bearing(AMBs) obtained using Lagrange’s equation is introduced. The SMC approach by using linear matrix inequality (LMI) technique is proposed not only to out-perform the proportional integral differential (PID) control but also to show some advantages. Firstly, a robust stabilization problem for a class of nonlinear systems is considered. Secondly, the conservatism of PID approach is reduced, fast response and reject disturbance of the system is also enhanced in this study. Finally, the simulation result has been obtained and compared with the conventional PID control. website.
Keywords: State feedback control, two DOF for AMB, sliding mode control..