发明申请
- 专利标题: Emitting direction control apparatus for lamp
- 专利标题(中): 灯发光方向控制装置
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申请号: US11494146申请日: 2006-07-26
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公开(公告)号: US20070035268A1公开(公告)日: 2007-02-15
- 发明人: Kazuo Goto , Hideki Uchida , Manabu Sasa , Masataka Ando
- 申请人: Kazuo Goto , Hideki Uchida , Manabu Sasa , Masataka Ando
- 优先权: JPP.2005-220379 20050729
- 主分类号: G05B19/40
- IPC分类号: G05B19/40
摘要:
An emitting direction control apparatus for a lamp is provided with: a driver for deflecting an emitting direction for a lamp; and a controller that control the driver to perform a deflection. The controller includes an initialization function, for setting, at an initial position, a stepping motor that serves as a driving source for the driver. The initialization function detects a first current positional angle for the stepping motor; when the first current positional angle is greater than a reference angle, rotates the stepping motor in a bumping direction at a high speed until the reference angle is reached; after the reference angle has been reached,. rotates the stepping motor to a bumped position an initial number of steps at a low speed; and after the bumped position has been reached, rotates the stepping motor in the reverse direction a predetermined number of steps and sets the stepping motor in the initial position.
公开/授权文献
- US07511440B2 Emitting direction control apparatus for lamp 公开/授权日:2009-03-31
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