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1. 发明专利

JP2009119901A Power steering apparatus 审中-公开
标题翻译：动力转向装置
公开(公告)号：JP2009119901A
公开(公告)日：2009-06-04
申请号：JP2007292863
申请日：2007-11-12
申请人： Hitachi Ltd , Toyota Motor Corp , トヨタ自動車株式会社 , 株式会社日立製作所
发明人： KURATA MASAKAZU , SAKAKI TOSHIMITSU , SASAKI MITSUO , YAMAURA TAMOTSU , NAKADA MITSUAKI , ONO KOHEI , KASAI EIJI , SAITO TAKATOSHI
IPC分类号： B62D5/07 , F16K47/02
CPC分类号： B62D5/065 , B62D5/064
摘要： PROBLEM TO BE SOLVED: To solve a problem wherein the flow of a hydraulic fluid becomes turbulent in a check valve to cause noise when a flow rate per unit time is increased in the check valve by abrupt steering. SOLUTION: A Reynolds number in a first one-way valve is 2,300 or less when the flow rate per unit time of the hydraulic fluid flowing in the first one-way valve is maximum, and a Reynolds number in a second one-way valve is 2,300 or less when the flow rate per unit time of the hydraulic fluid flowing in the second one-way valve is maximum. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了解决在单向阀中的单位时间流量由于突然转向而增大时，止回阀中的液压流体的流动变得湍流而产生噪音的问题。解决方案：当在第一单向阀中流动的液压流体的每单位时间的流量最大时，第一单向阀中的雷诺数为2,300或更小，并且第二单向阀中的雷诺数为当第二单向阀中流动的液压流体的每单位时间的流量最大时，双向阀为2,300或更小。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2009101937A Power steering device 审中-公开
标题翻译：动力转向装置
公开(公告)号：JP2009101937A
公开(公告)日：2009-05-14
申请号：JP2007277109
申请日：2007-10-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAURA TAMOTSU
IPC分类号： B62D6/00 , B62D5/06 , B62D5/07 , B62D119/00
摘要： PROBLEM TO BE SOLVED: To provide a power steering device for preventing responsiveness of a steering assist from lowering when the pressure of a hydraulic circuit is dropped while an ignition switch is in an OFF state.
SOLUTION: Before a control unit 20 for drive-controlling an electric motor 10 for driving an oil pump starts a steering assist control for drive-controlling the electric motor 10 on the basis of an assist drive torque value TA calculated by an assist drive torque calculation means 29 after the ignition switch 21 is turned ON, the control unit 20 performs a pressure rise control for drive-controlling the electric motor 10 on the basis of a pressure rise drive torque value Ti calculated by a pressure rise drive torque calculation means 30, sucks hydraulic oil from a reservoir tank to a hydraulic circuit, and previously increases the pressure of the hydraulic circuit.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于在点火开关处于关闭状态时当液压回路的压力下降时防止转向辅助的响应性下降的动力转向装置。解决方案：在用于驱动控制用于驱动油泵的电动机10的控制单元20之前，基于由辅助计算出的辅助驱动转矩值TA开始用于驱动控制电动机10的转向辅助控制驱动扭矩计算装置29在点火开关21接通之后，控制单元20基于通过升压驱动转矩计算计算的升压驱动转矩值Ti执行用于驱动电动机10的升压控制装置30，将液压油从储罐吸入液压回路，并预先增加液压回路的压力。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2009192342A Failure detection apparatus for resolver 有权
标题翻译：解决方案故障检测装置
公开(公告)号：JP2009192342A
公开(公告)日：2009-08-27
申请号：JP2008032660
申请日：2008-02-14
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAURA TAMOTSU , HAMADA KENICHI , MAKINO YUTAKA
IPC分类号： G01D5/244 , G01B7/30
CPC分类号： G01B7/30 , G01D3/08
摘要： PROBLEM TO BE SOLVED: To provide a failure abnormality detection device for a resolver capable of accurately detecting the abnormalities of the resolver. SOLUTION: Existence of an abnormality of the resolver is determined, based on the square sum of sinθ and cosθ. When it is determined that the resolver has an abnormality, a counted value is gradually increased with the passage of time; while when determined that the resolver has no abnormality, the counted value is gradually decreased with the passage of time. An abnormality is determined to have occurred in the resolver, under the condition that the counted value exceeds the abnormality determination threshold. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够精确地检测分解器的异常的解析器的故障异常检测装置。解决方案：基于sinθ和cosθ的平方和确定旋转变压器的异常情况。当确定分解器具有异常时，计数值随时间逐渐增加; 当确定解析器没有异常时，计数值随时间逐渐减小。在计数值超过异常判定阈值的条件下，确定在解算器中发生了异常。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2006050721A Brushless motor 审中-公开
标题翻译：无刷电机
公开(公告)号：JP2006050721A
公开(公告)日：2006-02-16
申请号：JP2004226023
申请日：2004-08-02
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAURA TAMOTSU
IPC分类号： H02P6/16
摘要： PROBLEM TO BE SOLVED: To provide a brushless motor exhibiting motor performance still more by correcting the electric angle of the brushless motor based on an offset value determined under rotating state of the motor. SOLUTION: The brushless motor 12 comprises the correction value storage section 308b of a rotational angle sensor signal correcting section 308 for storing the detection output from a motor rotational angle sensor 19 when the counter electromotive force of any one of U, V, and W phases of the brushless motor 12 is 0 under a predetermined rotational state as a phase correction value, and the correction value calculating section 308a for correcting a value detected by the motor rotational angle sensor 19 based on the phase correction value stored in the correction value storage section 308b. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过基于在电动机的旋转状态下确定的偏移值来修正无刷电动机的电角度，提供一种更显示电动机性能的无刷电动机。解决方案：无电动马达12包括旋转角度传感器信号校正部分308的校正值存储部分308b，用于存储来自马达旋转角传感器19的检测输出，当U，V，无刷电动机12的W相在作为相位校正值的规定的旋转状态下为0，校正值计算部308a，根据存储在校正中的相位校正值来校正由电动机转角传感器19检测的值值存储部308b。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2009133793A Apparatus for detecting abnormality of resolver 审中-公开
标题翻译：用于检测解决方案异常的装置
公开(公告)号：JP2009133793A
公开(公告)日：2009-06-18
申请号：JP2007311859
申请日：2007-12-03
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HAMADA KENICHI , YAMAURA TAMOTSU
IPC分类号： G01D5/245
摘要： PROBLEM TO BE SOLVED: To provide an apparatus for detecting abnormality of a resolver, which can surely detect the abnormality.
SOLUTION: An abnormality detecting section is provided, which detects an abnormal state of an excitation signal in the case that a value of variations in a phase angle or a rotation speed of a rotor calculated based on the phase angle is out of a range of a prescribed threshold.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够可靠地检测异常的解析器的异常检测装置。解决方案：提供一种异常检测部分，其在基于相位角计算的转子的相位角或转速的变化值不在一个情况下检测激励信号的异常状态规定阈值范围。版权所有（C）2009，JPO＆INPIT

6. 发明专利

JP2009132341A Check valve and power steering device 审中-公开
标题翻译：检查阀和动力转向装置
公开(公告)号：JP2009132341A
公开(公告)日：2009-06-18
申请号：JP2007311858
申请日：2007-12-03
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： GOTO MAKOTO , YAMAURA TAMOTSU
IPC分类号： B62D5/07
摘要： PROBLEM TO BE SOLVED: To provide a check valve and a power steering device ensuring a required flow rate without making the check valve to large size. SOLUTION: The check valve has a valve element stored in a housing; and a seat surface for performing sealing of an operation oil by abutting it on the valve element. A flow passage area between the valve element and the seat surface at opening of the valve is made to the minimum flow passage area in the check valve. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种止回阀和动力转向装置，确保所需的流量，而不使止回阀变大。
解决方案：止回阀具有存储在壳体中的阀元件; 以及用于通过将其抵靠在阀元件上来进行操作油的密封的座面。在阀门打开时阀元件和阀座表面之间的流路面积被制成止回阀中的最小流通面积。版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2009113733A Power steering device 审中-公开
标题翻译：动力转向装置
公开(公告)号：JP2009113733A
公开(公告)日：2009-05-28
申请号：JP2007291408
申请日：2007-11-09
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAURA TAMOTSU
IPC分类号： B62D5/07 , B62D6/00 , B62D101/00 , B62D119/00 , F15B1/02 , F15B1/04 , F15B11/08 , F15B13/12
CPC分类号： B62D5/062 , B62D5/065
摘要： PROBLEM TO BE SOLVED: To provide a power steering device preventing degradation of the steering feeling caused by the effect of the rigidity of a hydraulic passage for connecting an oil pump to a power cylinder.
SOLUTION: Parts of first and second hydraulic passages 27 for respectively connecting both hydraulic chambers 11a of a pump unit 16 and a power cylinder 12 form low-rigidity passages 27c formed of flexible pipes 33 formed of synthetic rubber. The passage length L of the low-rigidity line 27c is set so that the apparent volume modulus of elasticity Ke of working oil in first and second hydraulic transmission routes 29 is ≥100 MPa and ≤300 MPa, respectively.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种动力转向装置，其防止由于用于将油泵连接到动力缸的液压通道的刚度的影响而引起的转向感的劣化。解决方案：用于分别连接泵单元16的液压室11a和动力缸12的第一和第二液压通道27的部分形成由合成橡胶形成的柔性管33形成的低刚性通道27c。低刚度线27c的通过长度L被设定为使得第一和第二液压传递路径29中的工作油的表观体积弹性模量Ke分别为≥100MPa和≤300MPa。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2006050718A Brushless motor 审中-公开
标题翻译：无刷电机
公开(公告)号：JP2006050718A
公开(公告)日：2006-02-16
申请号：JP2004226020
申请日：2004-08-02
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAURA TAMOTSU
IPC分类号： H02K29/08 , H02K11/00
摘要： PROBLEM TO BE SOLVED: To provide a brushless motor for reducing the cost and space, and for detecting the rotation angle. SOLUTION: In the brushless motor 12 provided with a gear 20, disposed on a motor shaft 12c of the brushless motor 12, a motor rotation angle sensor 19 facing a tooth face of the gear 20 and a control unit 13 for estimating the rotational position of a rotor on the basis of a detection signal of the motor rotation angle sensor 19, and carrying a current to an excitation coil 12a, on the basis of the estimated rotation position, a detection means, comprising the gear 20 and the motor rotation angle sensor 19, detects the same period as integral multiple of a half of the number of magnetic poles of a permanent magnet 12b per rotation of a rotor. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于降低成本和空间以及用于检测旋转角度的无刷电动机。解决方案：在设置有设置在无刷电动机12的电动机轴12c上的齿轮20的无刷电动机12中，面向齿轮20的齿面的电动机旋转角度传感器19和用于估计基于电动机旋转角度传感器19的检测信号，转子的旋转位置，并基于估计的旋转位置向励磁线圈12a输送电流;检测装置，包括齿轮20和电动机旋转角度传感器19检测与旋转体旋转的永磁体12b的磁极数的一半的整数倍相同的周期。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JP2008049968A Power steering device 审中-公开
标题翻译：动力转向装置
公开(公告)号：JP2008049968A
公开(公告)日：2008-03-06
申请号：JP2006230896
申请日：2006-08-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HAMADA KENICHI , YAMAURA TAMOTSU , MATSUOKA ATSUSHI , MAKINO YUTAKA
IPC分类号： B62D6/00 , B62D101/00 , B62D119/00
CPC分类号： B62D5/065 , B62D5/0496
摘要： PROBLEM TO BE SOLVED: To provide a power steering device capable of reducing a steering load of a driver, even when a temperature sensor causes failure. SOLUTION: This power steering device has a first limiting current value calculating means for calculating a first limiting current value of an electric motor based on the temperature of an electric motor driving means by the temperature sensor, a second limiting current value calculating means for calculating a second limiting current value of the electric motor based on the estimated temperature of the electric motor by a temperature change estimating means, and a motor current limiting means for limiting a current value flowing to the electric motor based on the second limiting current value. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：即使当温度传感器导致故障时，提供能够降低驾驶员的转向负载的动力转向装置。解决方案：该动力转向装置具有第一极限电流值计算装置，用于根据电动机驱动装置的温度由温度传感器计算电动机的第一极限电流值，第二极限电流值计算装置用于通过温度变化估计装置基于电动机的估计温度来计算电动机的第二极限电流值;以及电动机电流限制装置，用于基于第二极限电流值限制流向电动机的电流值。版权所有（C）2008，JPO＆INPIT

10. 发明专利

JP2006050720A Brushless motor 审中-公开
标题翻译：无刷电机
公开(公告)号：JP2006050720A
公开(公告)日：2006-02-16
申请号：JP2004226022
申请日：2004-08-02
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAURA TAMOTSU
IPC分类号： H02P6/16
摘要： PROBLEM TO BE SOLVED: To provide a brushless motor capable of canceling offset due to increase/decrease in supply voltage to a sensor section completely. SOLUTION: The brushless motor comprises a sensor section including a magnet MG1, an MR element 19aa provided between the magnet MG1 and the tooth of a worm gear 8b, a VCC1 for supplying power to the MR element, and a section 19ac for detecting the output signal from the MR element 19aa, and a sensor section including an MR element 19ab provided between the magnet MG1 and the worm gear 8b, a VCC2 for supplying power to the MR element 19ab such that a current flows through the MR element 19ab reversely to a current flowing through the MR element 19aa, and a section 19ad for detecting the output signal from the MR element 19ab wherein a rotational position calculating section 307 operates the difference between the detecting sections 19ac and 19ad and cancels the difference. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够完全抵消传感器部分的电源电压的增加/减少而抵消偏移的无刷电动机。解决方案：无刷电动机包括传感器部分，其包括磁体MG1，设置在磁体MG1和蜗轮8b的齿之间的MR元件19aa，用于向MR元件供电的VCC1和用于检测来自MR元件19aa的输出信号，以及包括设置在磁体MG1和蜗杆8b之间的MR元件19ab的传感器部分，用于向MR元件19ab供电的VCC2，使得电流流过MR元件19ab 与流过MR元件19aa的电流相反，以及用于检测来自MR元件19ab的输出信号的部分19ad，其中旋转位置计算部分307操作检测部分19ac和19ad之间的差异并抵消该差异。版权所有（C）2006，JPO＆NCIPI

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