公开(公告)号：EP2228696A1

公开(公告)日：2010-09-15

申请号：EP10002937.0

申请日：2005-01-27

申请人： Hitachi, Ltd.

发明人： Kanekawa, Nobuyasu ,  Sasaki, Shoji ,  Oyama, Katusya ,  Koseki, Tomonobu

IPC分类号： G05B9/02 ,  H03M1/64 ,  G01D5/20 ,  G05D3/12 ,  B62D5/04

CPC分类号： B60T8/885 ,  B60T2270/402 ,  B62D5/0481 ,  G01D5/2073 ,  G05B9/02 ,  H03M1/1076 ,  H03M1/645

摘要： 1. A motor-driven power steering apparatus, comprises a digital converting portion (2) that receives resolver signals from a resolver; an exciting signal generator (3) that generates an exciting signal and supplies said exciting signal to the resolver; a conversion trigger generator (4) that generates a conversion trigger according to said exciting signal; an A/D converter (11) that converts said resolver signals to digital values in response to said conversion trigger; a computing portion (12) that detects a failure by computing a value of electric current in a motor (8), and supplies said current value to said motor having its shaft connected to a controlled object (9) and the resolver; and a motor control apparatus for controlling the controlled obj ect (9) including a steering column and a steering mechanism, wherein a steering force is assisted according to a steering torque detected by a torque sensor (13), the assistance to said steering force is stopped when said steering torque detected by said torque sensor exceeds a predetermined threshold value.

摘要翻译： 1.一种电动机动力转向装置，包括从旋转变压器接收分解器信号的数字转换部分（2） 激励信号发生器（3），其产生激励信号并将所述激励信号提供给旋转变压器; 转换触发发生器（4），其根据所述激励信号产生转换触发; A / D转换器（11），其响应于所述转换触发而将所述分解器信号转换成数字值; 计算部分（12），通过计算电动机（8）中的电流值来检测故障，并将所述电流值提供给其轴连接到受控对象（9）和旋转变压器的所述电动机; 以及用于控制包括转向柱和转向机构的受控对象（9）的电动机控制装置，其中根据由转矩传感器（13）检测到的转向转矩来辅助转向力，对所述转向力的帮助是 当由所述转矩传感器检测到的转向转矩超过预定阈值时停止。

公开(公告)号：EP2078933A2

公开(公告)日：2009-07-15

申请号：EP09000230.4

申请日：2009-01-09

申请人： Hitachi, Ltd.

发明人： Kanekawa, Nobuyasu ,  Kobayashi, Ryoichi ,  Koseki, Tomonobu

IPC分类号： G01D5/244 ,  G01D5/20

CPC分类号： G01D5/24461 ,  G01D5/20

摘要： An abnormality detection circuit for a resolver outputs a rotation angle signal 101 corresponding to a rotation angle of a rotor from a resolver winding 102. In the abnormality detection circuit, the resolver abnormality detection circuit applies a specified signal to one terminal of the resolver winding 102, determines whether the specified signal is superimposed on the rotation angle signal 101 outputted by an other terminal of the resolver winding 102, and detects abnormalities of the resolver based on results of the determination.

摘要翻译： 用于分解器的异常检测电路从旋转变压器绕组102输出对应于转子的旋转角度的旋转角度信号101.在异常检测电路中，解算器异常检测电路将指定的信号施加到旋转变压器绕组102的一个端子 确定指定信号是否叠加在由旋转变压器绕组102的另一个端子输出的旋转角度信号101上，并且基于确定结果来检测旋转变压器的异常。

公开(公告)号：EP2078933A3

公开(公告)日：2011-01-05

申请号：EP09000230.4

申请日：2009-01-09

申请人： Hitachi, Ltd.

发明人： Kanekawa, Nobuyasu ,  Kobayashi, Ryoichi ,  Koseki, Tomonobu

IPC分类号： G01D5/244 ,  G01D5/20

CPC分类号： G01D5/24461 ,  G01D5/20

摘要： An abnormality detection circuit for a resolver outputs a rotation angle signal 101 corresponding to a rotation angle of a rotor from a resolver winding 102. In the abnormality detection circuit, the resolver abnormality detection circuit applies a specified signal to one terminal of the resolver winding 102, determines whether the specified signal is superimposed on the rotation angle signal 101 outputted by an other terminal of the resolver winding 102, and detects abnormalities of the resolver based on results of the determination.