Stabilization of Three pole Active Magnetic Bearing by Sliding Mode Control Techniques

Jesna, Sherine V A and Ushakumari, S (2017) Stabilization of Three pole Active Magnetic Bearing by Sliding Mode Control Techniques. In: International Conference on Green Technologies (ICGT), 18/12/2012, MBCET, Trivandrum.

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An AMB is a mechatronic device, which could ensure contact-less, low frictional losses, lubrication free, high speed applicationscompared to conventional bearings. These bearing systems work on the principle of magneticlevitation. Hence the transmission losses in the electric al drives systems and the use of lubricants, which are mostly pollutants, are reduced considerably. Thus AMBs are classified under the efficient and pollution free bearing systems available. The limited use of AMBs in industry is due to the expensive cost. The possible way to cost down the AMB is to reduce the number of magnetic poles. The three pole AMB has the major disadvantage of strong nonlinearity due to the magnetic flux coupling. This paper presents an extended sliding mode control approach to control nonlinear three pole Active Magnetic Bearing (AMB), along with nonlinear rotor dynamics, subjected to parametric variations and external disturbances. A comparison of performances of the AMB with extended controller and that of the AMB with conventional sliding mode controller is done, by simulation analysis, to quantify the robustness of the proposed controller.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Mechatronics, Non linear control, Sliding mode, extended dynamics, Magnetic Bearings
Subjects: Engineering > MIT Manipal > Mechatronics
Depositing User: MIT Library
Date Deposited: 22 Aug 2017 05:58
Last Modified: 22 Aug 2017 05:58

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