Electricity: motive power systems – Positional servo systems – With protective or reliability increasing features
Reexamination Certificate
2009-03-26
2011-10-11
Ip, Paul (Department: 2837)
Electricity: motive power systems
Positional servo systems
With protective or reliability increasing features
C318S266000, C318S430000, C318S432000, C318S434000, C307S010100, C701S002000, C701S049000
Reexamination Certificate
active
08035328
ABSTRACT:
A state memorizing device for a movable member, includes a lock state determining portion for determining whether or not the movable member, driven by a motor, is in a locked state, based on a motor current, an initial positional information memorizing portion for memorizing an initial positional information indicative of a current position of the movable member before the motor is started, a current positional information calculating portion for calculating a current positional information indicative of the current position of the movable member on the basis of the position indicated by the initial positional information and the motor current, and a current positional information correcting portion for determining the current position of the movable member based on the initial positional information in a case where the locked state of the movable member is detected and an electrification of the motor is stopped after the motor has just been started.
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Hozumi Soichiro
Kanie Hideyuki
Noda Kohei
Aisin Seiki Kabushiki Kaisha
Ip Paul
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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