Position detecting apparatus having electric motor and...

Details Position detecting apparatus having electric motor and... Position detecting apparatus having electric motor and...

2008-09-18

2009-12-22

Mullins, Burton (Department: 2834)

Electricity: motive power systems

Positional servo systems

C318S599000, C318S626000, C074S335000

Reexamination Certificate

active

07635961

ABSTRACT:
A reference position detecting apparatus includes an electric motor and a motor control unit. The electric motor includes a plurality of first coils and a plurality of second coils. The electric motor further includes a rotor that rotates when at least one of the plurality of first coils and the plurality of second coils is supplied with electricity. The motor control unit controls electricity supplied to either one of the plurality of first coils and the plurality of second coils to rotate the rotor to a limit position in a movable range of an object.

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