A sliding mode controller design for nonlaminated magnetic levitation systems
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https://doi.org/10.54939/1859-1043.j.mst.FEE.2022.81-89Keywords:
Sliding mode control; Non-laminated structure; Electromagnetic bearing; Disturbances; Fractional order derivative.Sliding mode control; Non-laminated structure; Electromagnetic bearing; Disturbances; Fractional order derivative.Abstract
This paper investigates sliding mode control methods for 1-DOF non-laminated active magnetic bearings 1 DOF. A dynamic model of non-laminated active magnetic bearings is expressed that it is difficult to design a model-based controller under nonlinear disturbance components such as eddy current losses in the actuator, external disturbance and uncertain parameters. In order to solve this problem, the sliding control methods are studied to improve the robustness of the controller. The working ability of the non-laminated active magnetic bearings and the effectiveness of the control system is demontrated by MatlabSimulink software and the sliding control method applied to the case of Sigmoid function proposed in this paper has improved the disadvantages of Sign and Sat-Pi functions.
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