Robust Variable Structure Controllers for Axial Active Magnetic Bearing

Yıl 2016, Special Issue (2016), 178 - 183, 01.12.2016

Sinan Başaran Selim Sivrioğlu

https://doi.org/10.18100/ijamec.270081

Öz

This
work focuses on robust variable structure control of a rotor-axial active
magnetic bearing system. The electromagnetic force generated by active magnetic
bearing is highly nonlinear characteristics. On the other hand, the magnetic
force coefficient is a calculated value and its real value is not truly
identified, therefore, robustness is a great importance in the operation of the
active magnetic bearings system. On this works Lyapunov based three different
type of variable structure controllers are proposed and experimentally tested.
Robustness of the controllers were tested experimentally by creating some
parametric uncertainty in the control system using an external disk mass
attached to the rotor. The results of the controllers are also compared with
conventional and linear robust controllers.

Anahtar Kelimeler

Axial active magnetic bearings, sliding mode controller, high gain robust controller, high frequency robust controller

Kaynakça

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