Absolute angular position sensor on 360 of a rotating element

Details Absolute angular position sensor on 360 of a rotating element Absolute angular position sensor on 360 of a rotating element

2008-01-29

2008-01-29

Patidar, Jay M (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

C324S207250, C324S174000

Reexamination Certificate

active

10559387

ABSTRACT:
An angular position sensor includes a rotating part (14) which creates a variable magnetic flux, a fixed part (16) for supporting two probes (22, 26) each having an output current, the first (22) of the probes having an output current having discontinuities when the magnetic flux passes through zero, the second (26) of the probes being subjected to a second magnetic flux, shifted by 90° relative to the first flux and having an output current that is a continuous function of the magnetic flux, and a device (30) for adding the currents from the two probes. The range of variation of the current from the first probe (22) is slightly larger than the range of variation of the current from the second probe (26). The sensor is applicable to engine camshafts.

REFERENCES:
patent: 4369405 (1983-01-01), Sato et al.
patent: 4982155 (1991-01-01), Ramsden
patent: 5164668 (1992-11-01), Alfors
patent: 5880586 (1999-03-01), Steinlechner et al.
patent: 6064197 (2000-05-01), Petersen et al.
patent: 6212783 (2001-04-01), Lehner et al.

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