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A Self-Sensing Active Magnetic Bearing with Zero-Bias-Current Control
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| Author(s) |
OHNIWA Katsumi; KATO Yuki; MIYASHITA Osamu; YOSHIDA Toshiya |
| Abstract |
A zero-bias-current self-sensing active magnetic bearing is proposed. One degree-of-freedom (DOF) of the rotor is controlled by a pair of electromagnets, which are alternatively energized by the proposed circuit. The rotor position of the one DOF is measured by using both electromagnets: the non-energized electromagnet also contributes to the position sensing. The proposed method gives good linearity in the position estimation. The controller of the magnetic levitation consists of a digital signal processor, DSP, which compensates the nonlinearity of the magnetic force and achieves good damping. |
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| Filename: | 0244 |
| Filesize: | 1.322 MB |
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| Type |
Members Only |
| Date |
Last modified 2006-02-12 by System |
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