Electricity: measuring and testing – Magnetic – Displacement
Patent
1993-09-08
1995-09-26
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
Displacement
318632, 318653, 32420721, 32420724, 354400, 36457101, G01D 518, G01B 714, G03B 1318, G05D 300
Patent
active
054536847
ABSTRACT:
A position detecting method for detecting a position of a moving object such as a bearing or a lens by capturing a plurality of repetitive periodic waveforms coming from a position sensor and performing data processing on the captured waveforms. The method comprises the steps of moving the moving object by more than one period of the waveforms, obtaining a maximum value and a minimum value of the waveforms, obtaining an offset value and a gain of the waveforms based on the maximum value and the minimum value, correcting a gain and an offset value of data based on the obtained offset value and the gain of the waveforms to create corrected data, and processing the corrected data to detect the position of the moving object.
REFERENCES:
patent: 4283679 (1981-08-01), Ito et al.
patent: 4458322 (1984-07-01), Veale
patent: 4462083 (1984-07-01), Schwefel
patent: 4490674 (1984-12-01), Ito
patent: 4629982 (1986-12-01), Kieslich
patent: 4791366 (1988-12-01), Suzuki et al.
Patent Abstracts of Japan, vol. 15, No. 351.
Kananen Ronald P.
Sony Corporation
Strecker Gerard R.
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