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1. 发明授权

US5920174A Control apparatus of electric power steering apparatus 失效
标题翻译：电动助力转向装置的控制装置
公开(公告)号：US5920174A
公开(公告)日：1999-07-06
申请号：US656329
申请日：1996-06-14
申请人： Hideaki Kawada , Hiroyuki Kanoh , Hisayoshi Koiwai , Syuji Endo , Yoshinori Sugiyama , Yuji Kouzaki
发明人： Hideaki Kawada , Hiroyuki Kanoh , Hisayoshi Koiwai , Syuji Endo , Yoshinori Sugiyama , Yuji Kouzaki
IPC分类号： B62D5/04
CPC分类号： B62D5/049
摘要： A control apparatus of an electric power steering apparatus capable of firmly detecting an abnormality of a torque detection value, caused by a drift occurred in a torque sensor and by a connector contact resistor, with a simple arrangement. A current supplied from a power supply flows through a potentiometer (3A) of a torque sensor (3), this current is supplied to a current detecting resistor (13g), a drift occurred in the torque sensor (3) is detected by a voltage across terminals of this resistor, the detected drift detection voltage V.sub.is is read in a microcomputer (21), and the drift detection voltage V.sub.is is compared with a set value to judge as to whether or not the drift is present within a normal range. The torque sensor is constructed of a main potentiometer (3.sub.M) and a sub-potentiometer (3.sub.S). A change amount .DELTA.V.sub.M is calculated from a difference between a presently detected value and a previously detected value of the torque detection voltage V.sub.2M of the main potentiometer. Also, a change amount .DELTA.V.sub.S as to the sub-potentiometer is similarly calculated. An abnormality of the torque detection value is judged in response to these change amounts .DELTA.V.sub.M and .DELTA.V.sub.S.
摘要翻译： PCT No.PCT / JP95 / 02098 Sec。 371日期1996年6月14日第 102（e）日期1996年6月14日PCT提交1995年10月13日PCT公布。公开号WO96 / 11831 日期：1996年04月25日一种电动助力转向装置的控制装置，能够通过简单的布置牢固地检测由转矩传感器和连接器接触电阻器发生的漂移引起的转矩检测值的异常。从电源供给的电流流过转矩传感器（3）的电位计（3A），该电流被提供给电流检测电阻（13g），转矩传感器（3）中发生的漂移被电压在该电阻器的两端，检测到的漂移检测电压Vis被读入微型计算机（21），并将漂移检测电压Vis与设定值进行比较，以判断漂移是否存在于正常范围内。扭矩传感器由主电位器（3M）和副电位器（3S）构成。根据当前检测值与主电位计的转矩检测电压V2M的先前检测值的差计算变化量DELTA VM。此外，类似地计算关于副电位计的变化量DELTA VS。根据这些变化量DELTA VM和DELTA VS来判断转矩检测值的异常。

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