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1. 发明专利

JP2002013990A MAGNETIC CORE FOR NON-CONTACT TYPE DISPLACEMENT SENSOR 失效
公开(公告)号：JP2002013990A
公开(公告)日：2002-01-18
申请号：JP2000197661
申请日：2000-06-30
申请人： TOKYO SINTERED METAL CO LTD , KOYO SEIKO CO
发明人： SERINO YOICHI , YAMAMOTO MASAYUKI , SUGIYAMA MASAKI , TSUCHIYA HIDESATO , MORIYAMA MASAKAZU , NAKAURA SHUNSUKE , NAKATANI YOSHIO , SANADA TAKAHIRO , NAGANO EISHIN
IPC分类号： B62D5/04 , G01B7/00 , G01B7/30 , G01L3/10 , G01L5/22 , H01F1/24 , H01F5/04 , H01F5/06 , H01F27/02 , H01F27/245 , H01F27/32
摘要： PROBLEM TO BE SOLVED: To provide a magnetic core for a non-contact type displacement sensor using an inexpensive predetermined green compact with comparatively high specific resistance as a frame of a coil housing member composing the magnetic core for effectively improving a mechanical characteristic which is a problem when using a green compact. SOLUTION: This sensor has a detection coil 2 detecting by non-contact a relative displacement amount with respect to a second detection ring 9 of a first detecting ring 8 displaced in accordance with a displacement amount of a torsion bar 7 when torque is applied to an input shaft 5 as a change of inductance, the coil housing member 3 having space housing the detection coil 2 and forming closed space with the housed detection coil 2, and a terminal 4 connected to the detection coil 2. The coil housing member 3 is composed of the green compact 10 of soft magnetic powder applied with insulating coating and an insulating layer 11 coating its outer face. It is characterized by that organic resin 12 is filled in the closed space of the coil housing member 3 housing the detection coil 2 for positively fixing the detection coil 2 inside the coil housing member 3.

2. 发明专利

JP2002005760A MAGNETIC CORE FOR NONCONTACT TYPE DISPLACEMENT SENSOR 失效
公开(公告)号：JP2002005760A
公开(公告)日：2002-01-09
申请号：JP2000192058
申请日：2000-06-27
申请人： TOKYO SINTERED METAL CO LTD , KOYO SEIKO CO
发明人： SERINO YOICHI , YAMAMOTO MASAYUKI , SUGIYAMA MASAKI , TSUCHIYA HIDESATO , MORIYAMA MASAKAZU , NAKAURA SHUNSUKE , NAKATANI YOSHIO , SANADA TAKAHIRO , NAGANO EISHIN
IPC分类号： G01L3/10 , B62D5/04 , G01B7/00 , G01L5/22
摘要： PROBLEM TO BE SOLVED: To provide a magnetic core for a noncontact type displacement sensor using an inexpensive prescribed green compact having a relatively high specific resistance value as the skeleton of a coil housing material forming the magnetic core and effectively improving the mechanical characteristic causing a problem when using the green compact. SOLUTION: This magnetic core is provided with a detecting coil 2 detecting the relative displacement quantity of a first detecting ring 8, against a second detecting ring 8, displaced according to the displacement quantity of a torsion bar 7 when torque is applied to an input shaft 5 in no contact as an inductance change a coil housing member 3 having a space storing the detecting coil 2 and forming a closed space together with the stored detecting coil, and a lead wire 4 connected to the detecting coil 2. The coil housing member 3 is formed with the green compact 10 of insulation-covered soft magnetic powder and an insulating layer 11 covering the outer face, and an organic resin 12 is filled in the closed space of the coil housing member 3 storing the detecting coil 2 to reliably fix the detecting coil 2 in the coil housing member 3.

3. 发明专利

JP2005041278A Electric power steering device 审中-公开
标题翻译：电动转向装置
公开(公告)号：JP2005041278A
公开(公告)日：2005-02-17
申请号：JP2003200580
申请日：2003-07-23
申请人： Koyo Seiko Co Ltd , 光洋精工株式会社
发明人： TOKUMOTO YOSHITOMO , MORIYAMA MASAKAZU , KAWAI MEGUMI
IPC分类号： G01L3/10 , B62D5/04 , B62D6/00 , B62D101/00 , B62D113/00 , B62D119/00
摘要： PROBLEM TO BE SOLVED: To provide an electric power steering device capable of returning to the steering assist control based upon the steering torque when a failure etc. is eliminated even if the steering assist control is stopped based upon the steering torque owing to a temporary failure.
SOLUTION: The electric power steering device is composed of a first and a second sensor to emit signals according to the rotating angles of the input shaft 32 and output shaft 33 of a steering shaft 3, a first and a second rotating angle sensing part to sense the rotating angles of the input 32 and output shafts 33 to work with the sensing results of the sensors, a torque sensing part to sense the steering torque generated on the steering shaft 3 using the sensing result of the rotating angle sensing parts, and a control unit 20 to make drive control of an electric motor 6 in accordance with the sensing result of these sensing parts. The operation is made in changing-over between two modes, the first assist mode in which a steering assist is made by the motor 6 using the sensed value of the steering torque made by the control unit 20 and the second assist mode in which the steering assist is conducted by the motor using the sensed value of the rotating angle given by one of the first and second rotating angle sensing parts.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种电动助力控制装置，其能够在消除了失败等时基于转向转矩返回到转向辅助控制，即使转向辅助控制基于由于暂时失败。解决方案：电动助力转向装置由第一传感器和第二传感器组成，根据转向轴3的输入轴32和输出轴33的旋转角发出信号，第一和第二旋转角度感测用于感测输入32和输出轴33的旋转角度以与传感器的感测结果一起工作的扭矩感测部分，用于使用旋转角度感测部分的感测结果感测在转向轴3上产生的转向扭矩，以及控制单元20，用于根据这些感测部件的感测结果进行电动机6的驱动控制。在两种模式之间进行转换操作，第一辅助模式，其中使用由控制单元20进行的转向扭矩的感测值由电动机6进行转向辅助，以及第二辅助模式，其中转向使用由第一和第二旋转角度感测部件之一给出的旋转角度的感测值由电动机进行辅助。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2001106106A ELECTRIC POWER STEERING DEVICE 失效
公开(公告)号：JP2001106106A
公开(公告)日：2001-04-17
申请号：JP28888199
申请日：1999-10-08
申请人： KOYO SEIKO CO
发明人： SHIRONOKUCHI HIDEKI , MORIYAMA MASAKAZU , CHIN YOSHINORI , NAGANO EISHIN
IPC分类号： B62D6/00 , B62D5/04
摘要： PROBLEM TO BE SOLVED: To provide an electric power steering device which can obtain a frictional coefficient of a road surface without the necessity of a specific sensor, and which can assist in a steering force on the basis of the obtained frictional coefficient. SOLUTION: This electric power steering device for determining a desired value of motor current for a steering force assist motor 24 in accordance with a value detected by a torque sensor 10 detecting a steering torque applied to a steering wheel (which is not shown) and a frictional coefficient between steered wheels and a road surface, and for rotating the motor 24 so as to set the motor current to the desired value in order to assist in steering force, comprises a brushless motor as the motor 24, a steering speed calculating means 12 for calculating a steering speed of the steering wheel from a value detected by a rotor position detector 14 for detecting a position of a rotor in the bushless motor 24, a torque variation calculating means 12 for calculating a variation in torque from a value detected by the torque sensor 10, and a means 12 for obtaining the friction coefficient from the steering speed and the torque variation.

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