发明申请
- 专利标题： ELECTRIC POWER STEERING APPARATUS
- 专利标题（中）： 电动转向装置
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申请号： US11836410申请日： 2007-08-09
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公开(公告)号： US20080035411A1公开(公告)日： 2008-02-14
- 发明人: Masaharu Yamashita , Eiji Kasai , Ippei Yamazaki , Shuji Fujita
- 申请人： Masaharu Yamashita , Eiji Kasai , Ippei Yamazaki , Shuji Fujita
- 申请人地址： JP Toyota-shi
- 专利权人： TOYOTA JIDOSHA KABUSHIKI KAISHA
- 当前专利权人： TOYOTA JIDOSHA KABUSHIKI KAISHA
- 当前专利权人地址： JP Toyota-shi
- 优先权： JP2006-218313 20060810
- 主分类号： B62D5/04
- IPC分类号： B62D5/04 ; B62D6/00
摘要：
When it is determined that a malfunction has occurred in a rotational angle sensor, an electronic control unit changes the control manner from the normal assist control to the sensorless assist control. In the sensorless assist control, an assist stop command unit receives the information concerning the motor rotational angular speed ωm from an angular speed conversion unit. Then, the motor rotational angular speed ωm is compared with the threshold value ωm1. If the motor rotational angular speed ωm is equal to or higher than the threshold value ωm1, an assist enabling signal is transmitted to a PWM voltage production unit to continue the power assist. On the other hand, if the motor rotational angular speed ωm is lower than the threshold value ωm1, a stop command signal is transmitted to the PWM voltage production unit to stop the power assist.
公开/授权文献
- US07694777B2 Electric power steering apparatus 公开/授权日：2010-04-13