发明授权
- 专利标题： Electric power steering system
- 专利标题（中）： 电动助力转向系统
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申请号： US11921279申请日： 2006-05-30
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公开(公告)号： US08055410B2公开(公告)日： 2011-11-08
- 发明人: Masahiko Sakamaki , Shigeki Nagase
- 申请人： Masahiko Sakamaki , Shigeki Nagase
- 申请人地址： JP Osaka-Shi, Osaka
- 专利权人： JTEKT Corporation
- 当前专利权人： JTEKT Corporation
- 当前专利权人地址： JP Osaka-Shi, Osaka
- 代理机构： McGinn IP Law Group, PLLC
- 优先权： JPP2005-157933 20050530
- 国际申请： PCT/JP2006/310773 WO 20060530
- 国际公布： WO2006/129659 WO 20061207
- 主分类号： B62D6/00
- IPC分类号： B62D6/00
摘要：
An electric power steering system in which a current command for a brushless DC motor is determined based on a detected steering torque, a voltage to be applied is determined based on a difference between the current command value and a current value flowing to the motor, and steering assist is implemented by applying the voltage so determined to the motor. A rotational angular velocity is computed based on a detected rotor position, and it is determined that the motor is abnormal when a rotational angular velocity determination unit determines that the rotational angular velocity is equal to or less than a predetermined value, a current command value determination unit determines that the current command value is equal to or less than a predetermined value, and a voltage determination unit determines that the voltage applied to the motor falls out of a predetermined voltage range.
公开/授权文献
- US20090043453A1 Electric power steering system 公开/授权日：2009-02-12
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