CPC H02N 15/00 (2013.01) [F16C 32/0459 (2013.01); G01B 7/14 (2013.01)] | 12 Claims |
1. A displacement correction apparatus, comprising:
a reference circuit, configured to provide a reference signal; and
a correction circuit, configured to perform a logarithm operation on a nonlinear displacement signal to be corrected, based on the reference signal, to obtain a corrected linear displacement signal,
wherein the nonlinear displacement signal to be corrected comprises an axial displacement signal of a magnetic levitation bearing detected by an eddy current sensor,
wherein in a case of performing a reference signal matching on the eddy current sensor,
the nonlinear displacement signal to be corrected comprises a minimum value of the axial displacement signal output by the eddy current sensor; and
an initial value of the reference signal comprises a set minimum reference signal.
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