Electricity: motive power systems – Positional servo systems – Antibacklash systems
Reexamination Certificate
2007-02-06
2007-02-06
Duda, Rina (Department: 2837)
Electricity: motive power systems
Positional servo systems
Antibacklash systems
C318S632000, C318S600000, C701S041000, C180S412000, C180S422000, C180S443000
Reexamination Certificate
active
11436525
ABSTRACT:
A second member and a first member are applied with bias force to mechanically engage with each other at one of detent positions defining relative positions therebetween. An electric motor rotating a rotor therein when being supplied with electricity. Rotation of the rotor is transmitted to an output shaft manipulating the first member. A main controller controls the electric motor to switch the one of the plurality of detent positions. A rotor angle detecting unit detects rotor angle of the rotor. An output angle detecting unit detects output angle of the output shaft. The main controller includes a backlash calculating unit that calculates a backlash amount between the rotor and the first member in accordance with at least one of occurrence of a first region, in which change in the output angle is small with respect to change in the rotor angle, and a range of the rotor angle in the first region. The main controller incorporates the backlash amount into the control of the electric motor.
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patent: 5202830 (1993-04-01), Tsurumiya et al.
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patent: 5659473 (1997-08-01), Noro et al.
patent: 5732373 (1998-03-01), Endo
patent: 6370459 (2002-04-01), Phillips
patent: 2004-138406 (2004-05-01), None
Hori Masashi
Kashiwagi Tomoyuki
Kimura Kiyoshi
Shinojima Masaaki
Shintani Hiroyuki
Duda Rina
Nippon Soken Inc.
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