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1. 发明专利

JP2005201852A Torque sensor and steering angle sensor 有权
标题翻译：扭矩传感器和转向角传感器
公开(公告)号：JP2005201852A
公开(公告)日：2005-07-28
申请号：JP2004010601
申请日：2004-01-19
申请人： Hitachi Cable Ltd , Hitachi Ltd , 日立電線株式会社 , 株式会社日立製作所
发明人： MENJU RYOICHI , MASAKI RYOZO
IPC分类号： G01L3/10 , B62D5/04 , G01B7/00 , G01B7/30
摘要： PROBLEM TO BE SOLVED: To manufacture a torque sensor and a steering angle sensor inexpensively by simplifying their manufacture.
SOLUTION: The torque sensor, which is mounted on an input shaft 2 and an output shaft 3 connected with a torsion bar 4, comprises a first tubular body 7 which is fixed to the output shaft 3 and is made of a magnetic substance, a second tubular body 8 which is fixed to the input shaft 2 so that it faces the first tubular body 7 and is made of a magnetic substance, discs 11 which are mounted on facing surfaces between the first tubular body 7 and the second tubular body 8, which have a plurality of through holes 13 a predetermined spacing apart circumferentially and are made of a nonmagnetic substance; and a detection coil 20 which is elctromagnetically connected to the first tubular body 7 and the second tubular body 8.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：通过简化其制造，廉价地制造扭矩传感器和转向角传感器。解决方案：安装在输入轴2和与扭杆4连接的输出轴3上的转矩传感器包括固定到输出轴3并由磁性物质制成的第一管状体7 第二管状体8，其固定到输入轴2，使得其面向第一管状体7并由磁性物质制成，盘11安装在第一管状体7和第二管状体之间的相对表面上 8，其具有多个通孔13，周向隔开预定间隔并由非磁性物质制成; 以及与第一管状体7和第二管状体8电气连接的检测线圈20.版权所有（C）2005，JPO＆NCIPI

2. 发明专利

JP2005010015A Angle sensor, angle/torque sensor, and electric power steering unit using the same 审中-公开
标题翻译：角度传感器，角度/扭矩传感器以及使用该方法的电动转向单元
公开(公告)号：JP2005010015A
公开(公告)日：2005-01-13
申请号：JP2003174434
申请日：2003-06-19
申请人： Hitachi Cable Ltd , Hitachi Ltd , 日立電線株式会社 , 株式会社日立製作所
发明人： MASAKI RYOZO , MENJU RYOICHI
IPC分类号： G01L3/10 , B62D5/04 , G01D5/245
摘要： PROBLEM TO BE SOLVED: To provide a sensor for power steering for detecting precisely a steering angle with a simple constitution having excellent consistency with an inductance type torque sensor.
SOLUTION: An angle detecting part 54 having a Hall element, that is one of a magnetic sensitive element, is inserted between an input shaft detecting ring 26 and a compensation ring 34 rotated integrally with an input shaft 12 for the steering. A magnetic flux generated in a compensation coil 36 passes through the input shaft detecting ring 26, the compensation ring 34 and a magnetic path 38. Unevenness of the magnetic flux is generated locally in a space between the compensation ring 34 and the input shaft detecting ring 26, caused by a tip part 7a and a bottom part 34b of the compensation ring 34. The angle detecting part 54 detects a condition change of the magnetic flux by rotation of the compensation ring 34. The angle sensor to detect a rotation angle of the input shaft 12 can be obtained by this manner.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于用于以与电感型扭矩传感器具有优异一致性的简单结构精确检测转向角的动力转向传感器。解决方案：具有作为感应元件之一的霍尔元件的角度检测部分54插入在输入轴检测环26和与用于转向的输入轴12一体旋转的补偿环34之间。在补偿线圈36中产生的磁通通过输入轴检测环26，补偿环34和磁路38.在补偿环34和输入轴检测环之间的空间中局部产生磁通的不均匀由补偿环34的尖端部分7a和底部34b引起的角度检测部分54通过补偿环34的旋转检测磁通量的状态变化。角度传感器检测旋转角度可以通过这种方式获得输入轴12。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2005208008A Torque sensor 审中-公开
标题翻译：扭矩传感器
公开(公告)号：JP2005208008A
公开(公告)日：2005-08-04
申请号：JP2004017424
申请日：2004-01-26
申请人： Hitachi Cable Ltd , Hitachi Ltd , 日立電線株式会社 , 株式会社日立製作所
发明人： MASAKI RYOZO , MENJU RYOICHI
IPC分类号： G01L3/02 , G01L3/10 , H01L41/12
CPC分类号： G01L3/102 , G01L3/105
摘要： PROBLEM TO BE SOLVED: To provide a small-sized magnetostrictive torque sensor having output characteristics not dependent on the rotating angle of a rotating shaft.
SOLUTION: This torque sensor comprises the rotating shaft 1 having magnetostrictive characteristics and first and second coils 3 and 4 each forming three or more closed loops. For each coil, the closed loops are arranged on a concentric circle relative to the rotating shaft (a concentric circle located on a plane vertical to the rotating shaft), and the direction of magnetostrictive characteristics of the rotating shaft detected by the first coil is different from the direction of magnetostrictive characteristics of the rotating shaft detected by the second coil. According to this, an output proportional to the torque of the rotating shaft can be obtained.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供具有不依赖于旋转轴的旋转角度的输出特性的小型磁致伸缩扭矩传感器。解决方案：该扭矩传感器包括具有磁致伸缩特性的旋转轴1和分别形成三个或更多个闭环的第一和第二线圈3和4。对于每个线圈，闭环相对于旋转轴（位于垂直于旋转轴的平面上的同心圆）布置在同心圆上，并且由第一线圈检测的旋转轴的磁致伸缩特性的方向不同从由第二线圈检测的旋转轴的磁致伸缩特性的方向。因此，可以获得与转轴的转矩成比例的输出。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2004061386A Angle sensor, angle torque sensor and electric power steering 审中-公开
标题翻译：角度传感器，角度传感器和电力转向
公开(公告)号：JP2004061386A
公开(公告)日：2004-02-26
申请号：JP2002222353
申请日：2002-07-31
申请人： Hitachi Cable Ltd , 日立電線株式会社
发明人： MASAKI RYOZO , KANEKO SATORU , MAKI KOJI
IPC分类号： G01L3/10 , B62D5/04 , G01B7/00 , G01B7/30 , G01D5/20 , G01L5/22
摘要： PROBLEM TO BE SOLVED: To provide an angle sensor capable of accurately detecting a steering angle as an absolute angle, a sensor capable of accurately detecting steering torque and the steering angle, and an electric power steering having these sensors with a simple structure. SOLUTION: This sensor has a torque detecting coil 9 for detecting a relative angle of an input shaft 1 and an output shaft 2 of a torsion bar 5 twisted by torque, and has an angle detecting coil 11 for detecting a turning angle of a speed reduction shaft for rotating by rotation transmitted from the input shaft 1 or the output shaft 2 and reduced in a speed by a speed reduction mechanism, and also has a circuit for detecting the torque by detecting the relative angle from output of the torque detecting coil 9 and a circuit for detecting the turning angle from output of the angle detecting coil 11. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了提供能够精确地检测作为绝对角度的转向角的角度传感器，能够精确地检测转向转矩和转向角的传感器以及具有简单结构的这些传感器的电动助力转向器。解决方案：该传感器具有扭矩检测线圈9，用于检测由扭矩扭转的扭力杆5的输入轴1和输出轴2的相对角度，并且具有用于检测转向角度的角度检测线圈11 减速轴，用于通过从输入轴1或输出轴2传递的旋转而旋转，并且通过减速机构以速度减速，并且还具有通过从转矩检测的输出检测相对角度来检测转矩的电路线圈9和用于从角度检测线圈11的输出检测转向角的电路。版权所有（C）2004，JPO

5. 发明专利

JP2004112898A Control method and device for motor in position sensorless 有权
公开(公告)号：JP2004112898A
公开(公告)日：2004-04-08
申请号：JP2002270968
申请日：2002-09-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KANEKO SATORU , MASAKI RYOZO , SAWADA TAKEFUMI
IPC分类号： H02P6/18 , H02P6/16 , H02P21/00 , H02P21/14 , H02P27/04
CPC分类号： H02P21/16
摘要： PROBLEM TO BE SOLVED: To provide a control device for motor in position sensorless having a means capable of estimating the accurate position of a rotor even if the estimation of the position of the rotor is difficult when a magnetic saturation locally occurs by a large current. SOLUTION: The control device is provided with an AC motor 2 having saliency, a PWM (pulse width modulation) inverter 3 that applies a voltage to the AV motor 2, and a controller 1 that controls the PWM inverter 3 by a PWM signal. The controller 1 is provided with a position estimation means 11 that detects motor inductance in a prescribed direction relative to the direction of a current vector flowing to the AC motor 2, and estimates the position of the rotor of the AC motor based on the motor inductance. COPYRIGHT: (C)2004,JPO

6. 发明专利

JP2004032908A Motor controller 有权
公开(公告)号：JP2004032908A
公开(公告)日：2004-01-29
申请号：JP2002185825
申请日：2002-06-26
申请人： Hitachi Ltd , Nissan Motor Co Ltd , 日産自動車株式会社 , 株式会社日立製作所
发明人： NAGAYAMA KAZUTOSHI , MASAKI RYOZO , KANEKO SATORU , SAWADA TAKEFUMI
IPC分类号： H02P25/08 , H02P6/08 , H02P21/00 , H02P27/04
摘要： PROBLEM TO BE SOLVED: To reduce high-frequency noise at low speed or stoppage of an AC motor. SOLUTION: This motor controller detects the magnetic pole position of an AC motor, based on the AC current flowing to the AC motor and also detects the rotational speed of the AC motor, based on the change of the magnetic pole position. Furthermore, this generates a voltage for detection of the magnetic pole position for one cycle of carrier, whose half cycle is a positive rectangular wave and whose next half cycle is a negative rectangular wave, and also changes the superposition interval of the voltage for detection of magnetic pole position, according to the rotational speed of the AC motor, and superposes the voltage for detection of magnetic pole position to a d-axis voltage command value. COPYRIGHT: (C)2004,JPO

7. 发明专利

JP2004023920A Ac motor controller 审中-公开
公开(公告)号：JP2004023920A
公开(公告)日：2004-01-22
申请号：JP2002177160
申请日：2002-06-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MASAKI RYOZO , KANEKO SATORU , SAWADA TAKEFUMI
IPC分类号： H02P6/08 , H02P21/00 , H02P27/04 , H02P27/06 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To provide an AC motor controller which can quickly suppress torque pulsation when performing the drive by the rectangular wave voltage of 180° switching-on. SOLUTION: The phase currents iu, iv, and iw of a synchronous motor 1 driven by an inverter 3 are detected by a current detector 10 and are given to an offset current part 11. The offset current part 11 gets the offset current value of a three-phase AC motor to which the rectangular wave voltage of 180°switching-on of each phase is applied. A switch selector 9 negates the offset current by controlling the inverter 3 so as to change the switching-on range of the positive voltage and the negative voltage of the rectangular wave voltage, based on the offset current value. COPYRIGHT: (C)2004,JPO

8. 发明专利

JP2003285657A Transmission device, vehicle and bicycle using the same 审中-公开
标题翻译：传动装置，车辆和使用它的自行车
公开(公告)号：JP2003285657A
公开(公告)日：2003-10-07
申请号：JP2003031840
申请日：2003-02-10
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MASAKI RYOZO
IPC分类号： B60K6/365 , B60K6/445 , B60K17/04 , B60L11/14 , B60L15/20 , B62M6/45 , B62M6/55 , F16H3/44 , F16H3/72 , B60K6/04 , B62M23/02
CPC分类号： B60L3/0092 , B60L11/14 , B60L2200/12 , B60L2200/26 , B62M6/55 , B62M11/145 , B62M11/18 , Y02T10/70 , Y02T10/7077 , Y02T10/7258
摘要： PROBLEM TO BE SOLVED: To make always a high system efficiency including a prime mover and a transmission device in which the transmission device has a motor for use in converting an input energy into the most-suitable output energy and a differential mechanism. SOLUTION: This transmission device has a plurality of differential mechanisms 4, 6 having each of an input shaft and an output shaft as a common shaft, respectively. At least one differential mechanism of the plurality of differential mechanisms controls a difference in the number of rotation of each of the input shaft and the output shaft by a first motor 8 and similarly at least the differential mechanism controls a torque by a second motor 9. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了始终具有高的系统效率，包括原动机和传动装置，其中传动装置具有用于将输入能量转换成最合适的输出能量的电动机和差速机构。解决方案：该传动装置具有分别具有作为公共轴的输入轴和输出轴各自的多个差动机构4,6。多个差速机构中的至少一个差速机构通过第一马达8控制输入轴和输出轴的旋转数差异，同样至少差速机构通过第二马达9来控制转矩。版权所有（C）2004，JPO

9. 发明专利

JP2003054273A Power transmission device of automobile 有权
标题翻译：汽车动力传动装置
公开(公告)号：JP2003054273A
公开(公告)日：2003-02-26
申请号：JP2002131369
申请日：2002-05-07
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MINOWA TOSHIMICHI , MASAKI RYOZO , INNAMI TOSHIYUKI , KADOMUKAI YUZO
IPC分类号： B60K6/387 , B60K6/44 , B60K6/442 , B60K6/547 , B60K17/04 , B60L11/14 , B60W10/02 , B60W10/06 , B60W10/08 , B60W20/00 , F02D29/02 , F16D28/00 , F16D48/06 , B60K6/04
CPC分类号： Y02T10/6286 , Y02T10/7077 , Y02T10/76
摘要： PROBLEM TO BE SOLVED: To avoid loss of inertial torque of a generator in a hybrid car provided with an engine, a motor and the generator. SOLUTION: In a power transmission device of an automobile provided with the engine 1, the generator 15 driven by output of the engine 1, and a motor 29 driven by power output of the generator 15 and discharge output of a battery 47, a clutch mechanism 23 is provided between an output shaft of the engine 1 and an output shaft of the generator 15. By this, occurrence of inertial torque of the generator can be restricted. Thus, correction of the inertia torque due to the engine or the motor becomes unnecessary, and a fuel cost can be drastically reduced at acceleration of the vehicle.
摘要翻译：要解决的问题：为了避免设置有发动机，电动机和发电机的混合动力汽车中的发电机的惯性力矩的损失。解决方案：在设置有发动机1的汽车的动力传递装置中，由发动机1的输出驱动的发电机15和由发电机15的动力输出驱动的电动机29和电池47的排出口，离合器机构 23设置在发动机1的输出轴与发电机15的输出轴之间。由此，能够限制发电机的惯性转矩的产生。因此，不需要对发动机或电动机造成的惯性转矩的校正，并且在车辆的加速下能够显着降低燃料成本。

10. 发明专利

JP2005117756A Failure diagnosis device of dc voltage detecting circuit and motor control system 有权
标题翻译：直流电压检测电路故障诊断装置及电机控制系统
公开(公告)号：JP2005117756A
公开(公告)日：2005-04-28
申请号：JP2003347281
申请日：2003-10-06
申请人： Hitachi Ltd , Nissan Motor Co Ltd , 日産自動車株式会社 , 株式会社日立製作所
发明人： NAGAYAMA KAZUTOSHI , MASAKI RYOZO , KANEKO SATORU , SAWADA TAKEFUMI
IPC分类号： H02P6/12 , H02P27/06 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To provide a failure diagnosis device of a DC voltage detecting circuit for diagnosing the failure of a circuit for detecting a DC voltage, and to provide a motor control system having the failure diagnosis device. SOLUTION: Reference value of a DC voltage VB is determined and the DC voltage VB is compared with the reference value. In PWM control, the difference of current difference ΔΔi in one period of carrier is detected, and then the reference value of the difference of current difference ΔΔi is calculated from a superposed voltage Vp and a d-axis current id and compared with the difference of current difference ΔΔi. At the time of rectangular wave control, a variation ΔVB before and after switching is determined from the DC voltage VB and the information of a switching phase, and then the reference value of variation ΔVB is calculated from the current isw of the switching phase and compared with the variation ΔVB. When the difference from the reference value exceeds a specified value, a decision is made that a voltage detecting section 7 has failed and a switch 12 is turned to the PWM control section 9 side and the DC voltage VB being outputted from the voltage detecting section 7 is fixed to a minimum guarantee voltage. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供用于诊断用于检测直流电压的电路的故障的直流电压检测电路的故障诊断装置，并且提供具有故障诊断装置的电动机控制系统。
解决方案：确定直流电压VB的参考值，并将直流电压VB与参考值进行比较。在PWM控制中，检测一个载波周期的电流差ΔΔi的差值，然后根据叠加电压Vp和d轴电流id计算电流差ΔΔi差的参考值，并与电流差ΔΔi。在矩形波控制时，根据直流电压VB和开关相位的信息确定开关前后的变化ΔVB，然后根据开关相的电流脉冲计算变化量ΔVB的基准值，并进行比较具有变化ΔVB。当与基准值的差超过规定值时，判断为电压检测部7发生故障，开关12转向PWM控制部9侧，直流电压VB从电压检测部7输出固定在最低保证电压。版权所有（C）2005，JPO＆NCIPI

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