http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Unbiased 제어를 위한 반경방향 능동 자기베어링 설계
노명규(Myounggyu Noh),송미선(Miseon Song),정원진(Wonjin Jeong),박영우(Young-Woo Park) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
Magnetic bearings support rotating shaft using magnetic forces. These magnetic forces are generated by the currents in the coils wound on poles. The multi-polar structure of radial magnetic bearings results in nonlinear relationships between coil currents and forces. Further, this relationship is non-invertible which is necessary for linear feedback. Typically, a bias linearization is used to linearize the relationship. However, bias-linearization control requires too many amplifiers, which increases cost and system complexity. In this paper, we design a multi-pole radial bearing, assuming that unbiased control is employed, and industry-standard 3-phase inverter is used to drive the bearing. Current distribution matrix is obtained for the case where the number of poles is odd. Specifically, 9-pole bearing design is presented. The load capacity and flux density distribution are validated from the results of finite-element analysis.