Integral variable-structure grey control for magnetic levitation system

Integral variable-structure grey control for magnetic levitation system

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An integral variable-structure grey control for a magnetic levitation system for position tracking is presented. The sliding-mode control is insensitive to system uncertainties and disturbances when it is within expected limits. It produces chattering when uncertainty values are overestimated, or steady-state error when underestimated. The method uses a mathematically simple and computationally efficient grey compensator for the integral variable structure controller to reduce chattering and steady-state error. The stability of this magnetic levitation system is proven by using the Lyapunov function. The experimental results verify that the proposed controller is valid for a magnetic levitation system.


    1. 1)
      • Robust position control of a magnetic levitation system via dynamic surface control technique
    2. 2)
      • Modeling and nonlinear control of magnetic levitation system
    3. 3)
    4. 4)
      • H∞ control and sliding mode control of magnetic levitation system
    5. 5)
    6. 6)
      • Automatic control systems
    7. 7)
      • Electromagnetic levitation and suspension techniques
    8. 8)
      • Multiloop control of thyristor-driven magnetic levitation system
    9. 9)
    10. 10)
    11. 11)
    12. 12)
      • Control problems of grey system
    13. 13)
    14. 14)
    15. 15)

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