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Title:
VEHICULAR STEERING GEAR
Document Type and Number:
Japanese Patent JP2002067987
Kind Code:
A
Abstract:

To provide an inexpensive vehicular steering wheel detecting a neutral position of a driving shaft by an absolute position detecting device capable of coping with a vehicle of a large steering angle and preventing the neutral position of the driving shaft to be detected from easily changing with the lapse of time.

In this vehicular steering gear, a potentiometer 41 has a lever 41a engaging with a groove 19d provided in a rod 19, and a predetermined dead zone (h-t) exists in the engagement of the groove 19d and the lever 41a. A controller detects the neutral position of the rod 19 by reciprocating the rod 19 at least once for just a predetermined amount, detecting a width of the dead zone from a relative position of the rod 19 detected by an encoder 25 and an output of the potentiometer 41, driving the rod 19 until the output of the potentiometer 41 becomes a value indicating the neutral position of the rod 19, and correcting the position of the rod 19 by only half of the width of the dead zone from that position.


Inventors:
TANIZAKI SHINJI
Application Number:
JP2000254444A
Publication Date:
March 08, 2002
Filing Date:
August 24, 2000
Export Citation:
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Assignee:
AISIN SEIKI
International Classes:
G01B7/00; B62D5/04; B62D6/00; G01B7/30; G01B21/22; (IPC1-7): B62D5/04; B62D6/00; G01B7/00; G01B7/30; G01B21/22