동력기계공학회지 (Journal of Power System Engineering)
- 제7권3호
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- Pages.48-53
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- 2003
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- 2713-8429(pISSN)
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- 2713-8437(eISSN)
$H_{\infty}$ 제어기에 의한 능동 자기 베어링 시스템의 강인한 제어계 설계
Robust Control System Design for an AMB by $H_{\infty}$ Controller
초록
This paper deals with the control of a horizontally placed flexible rotor levitated by electromagnets in a multi-input/multi-output (MIMO) active magnetic bearing(AMB) system. AMB is a kind of novel high performance bearing which can suspend the rotor by magnetic force. Its contact-free manner between the rotor and stator results in it being able to operate under much higher speed than conventional rolling bearings with relatively low power losses, as well as being environmental-friendly technology for AMB system having no wear and no lubrication requirements. In this MIMO AMB system, the rotor is a complex mechanical system, it not only has rigid body characteristics such as translational and slope motion but also bends as a flexible body. Reduced order nominal model is computed by consideration of the first 3 mode shapes of rotor dynamics. Then, the
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