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公开(公告)号：US06429781B2
公开(公告)日：2002-08-06
申请号：US09782657
申请日：2001-02-13
申请人： Masaru Abe , Hisashi Misato , Takashi Nii
发明人： Masaru Abe , Hisashi Misato , Takashi Nii
IPC分类号： G08B2100
摘要： Axial bearing wear in a motor is determined by differencing signals from special coils in the two ends of the motor stator. The signals on the two coils vary in opposite directions with axial displacement of the motor rotor. A dead zone circuit suppresses output when the axial displacement of the rotor is within the normal range of play for the rotor of the particular motor. When the axial displacement exceeds the normal range, the output actuates an indicator in relation to the magnitude of the displacement in excess of the normal range. Sequential LED indicators indicate both magnitude and direction of excess displacement. An analog meter is also disclosed which indicates only the magnitude of the excess displacement.
摘要翻译： 电动机的轴向磨损由电动机定子两端的特殊线圈的差分信号决定。 两个线圈上的信号在电动机转子的轴向位移相反的方向上变化。 当转子的轴向位移在特定电机的转子的正常游隙范围内时，死区电路抑制输出。 当轴向位移超过正常范围时，输出将相对于位移大小超过正常范围的指示器启动。 顺序LED指示灯指示超量位移的大小和方向。 还公开了一种仅表示过量位移的大小的模拟仪表。
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公开(公告)号：US07019661B2
公开(公告)日：2006-03-28
申请号：US10498843
申请日：2001-12-18
申请人： Hisashi Misato
发明人： Hisashi Misato
IPC分类号： G08B21/00
CPC分类号： H02K11/35 , H02K5/128 , H02K5/1672 , H02K11/20 , H02K11/225
摘要： An axial position detection circuit detects the axial position of a rotor from the difference in voltages generated at axial position detection coils disposed at both ends in the axial direction of a stator of a canned motor. An axial zero point adjustment circuit uses a voltage supply, which varies proportionately with the power supply voltage of the canned motor, as a bias power supply to adjust the voltage difference of the axial position detection coils to zero when the rotor is at a reference position in the axial direction. Even if the power supply voltage of the canned motor varies, since the bias power supply of the axial zero point adjustment circuit varies in likewise manner, the zero point adjustment by the axial zero point adjustment circuit is not affected and axial bearing wear detection of high precision is enabled.
摘要翻译： 轴向位置检测电路根据设置在固定电动机的定子的轴向两端的轴向位置检测线圈处产生的电压差来检测转子的轴向位置。 轴向零点调整电路使用与固定电动机的电源电压成比例地变化的电压源作为偏置电源，以在转子处于参考位置时将轴向位置检测线圈的电压差调整为零 在轴向上。 即使固定电动机的电源电压变化，由于轴向零点调整电路的偏置电源同样变化，因此轴向零点调整电路的零点调整不受影响，轴向磨损检测高 精度有效。
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公开(公告)号：US20050012630A1
公开(公告)日：2005-01-20
申请号：US10498843
申请日：2001-12-18
申请人： Hisashi Misato
发明人： Hisashi Misato
CPC分类号： H02K11/35 , H02K5/128 , H02K5/1672 , H02K11/20 , H02K11/225
摘要： An axial position detection circuit detects the axial position of a rotor from the difference in voltages generated at axial position detection coils disposed at both ends in the axial direction of a stator of a canned motor. An axial zero point adjustment circuit uses a voltage supply, which varies proportionately with the power supply voltage of the canned motor, as a bias power supply to adjust the voltage difference of the axial position detection coils to zero when the rotor is at a reference position in the axial direction. Even if the power supply voltage of the canned motor varies, since the bias power supply of the axial zero point adjustment circuit varies in likewise manner, the zero point adjustment by the axial zero point adjustment circuit is not affected and axial bearing wear detection of high precision is enabled.
摘要翻译： 轴向位置检测电路根据设置在固定电动机的定子的轴向两端的轴向位置检测线圈处产生的电压差来检测转子的轴向位置。 轴向零点调整电路使用与固定电动机的电源电压成比例地变化的电压源作为偏置电源，以在转子处于参考位置时将轴向位置检测线圈的电压差调整为零 在轴向上。 即使固定电动机的电源电压变化，由于轴向零点调整电路的偏置电源同样变化，因此轴向零点调整电路的零点调整不受影响，轴向磨损检测高 精度有效。
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公开(公告)号：US5777217A
公开(公告)日：1998-07-07
申请号：US734037
申请日：1996-10-18
申请人： Hisashi Misato , Tukasa Motobayashi
发明人： Hisashi Misato , Tukasa Motobayashi
CPC分类号： G01M13/04
摘要： A rotation-direction signal inclusion device which outputs the larger of a rotation-direction signal and a bearing-wear signal includes a limiter circuit which limits, or "clips", a bearing-wear signal when a short-circuit wire connected across the limiter circuit is opened. When the short-circuit wire is intact, the bearing-wear signal bypasses the limiter circuit and the bearing-wear signal is not limited.
摘要翻译： 输出旋转方向信号和轴承磨损信号中的较大者的旋转方向信号包含装置包括限制器电路，当限制器连接的短路线限制电路限制或“夹紧”轴承磨损信号 电路打开。 当短路线完好无损时，轴承磨损信号绕过限制器电路，轴承磨损信号不受限制。
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