Magnetic ball bearing systems are applied in many different fields in industry and some aviation fields. In this system, the magnetic ball bearing serves as a conventional ball bearing, but the very obvious difference between these two types is that the object is held fixed or movable between two or more magnetic poles of the electromagnet. When the current flows through the coils of the magnet, a magnetic force is generated, which lifts and suppresses the forces in different directions so that the object is always in the desired position.Based on the characteristics of slide control combined with fuzzy control, the control model can be simplified, avoiding the limitations encountered by conventional control methods. The sliding control method combined with dimming control with fixed drive control for nonlinear systems and fast response will overcome limitations such as easy slippage and inaccurate operation, especially in the case of position changes and external interference impact.
Tài liệu tham khảo
Abdul Rashid Husain, Mohamad Noh Ahmad & Abdul Halim Mohd Yatim (2008), Chattering-free Sliding Mode Control for an Active Magnetic Bearing System. World Academy of Science, Engineering and Technology
Chien-An Chen, Huann-Keng Chiang & Jing-Chung Shen (2009), Sliding Mode Control of a Magnetic Ball Suspension System, Vol. 11, No. 2
H.Lee & V. Utkin (2007). Chattering suppression methods in sliding mode control system .Annual Review in Control, vol. 31, pp. 179-188
L.X.Wang (1997).A course in fuzzy sysmms and control. Prentice Hall
O.Omidvar & D.L.Elliott (1997) Neural sysmms for control. Academic Hall..
Oscar Castillo & patricia Melin. Type-2 Fuzzy Logic: Theory and Application, vol.223, Spinger.
Peter Vas (1994). Sensorless Vector and Direct Torque Control.Oxford University.
Qilian Liang & Jerry M.Mendel (2000). Interval Type-2 Fuzzy logic Systems: Theory and Design. IEEE Transaction on fuzzy system, vol.8, No.5.
J.Yen & R.Langari (2002). Fuzzy logic, Inmlligence, Control and information. Prentice Hall
Wilfrid Perruquetti & Jean Pierre Barbot (2002). Sliding Mode Control in Engineering. Marcel Dekker
