公开(公告)号：US06422095B1

公开(公告)日：2002-07-23

申请号：US09696653

申请日：2000-10-25

申请人： Yasuo Shimizu ,  Yasuharu Ohyama ,  Katsuji Watanabe ,  Shigeru Yamawaki ,  Atsuhiko Yoneda ,  Yasuhiro Terada

发明人： Yasuo Shimizu ,  Yasuharu Ohyama ,  Katsuji Watanabe ,  Shigeru Yamawaki ,  Atsuhiko Yoneda ,  Yasuhiro Terada

IPC分类号： G01L302

CPC分类号： G01L3/102 ,  G01L3/103 ,  G01L3/105 ,  G01L5/221

摘要： A magnetostrictive torque sensor includes a magnetostrictive film of width W provided along a circumference of a rotational shaft. The film causes magnetostriction in correspondence to a torque applied to the rotational shaft. The torque sensor also includes excitation and detection cores each having substantially U-shaped configuration. These cores are disposed in opposed relation to the film. The excitation core extends through an excitation coil while the detection core extends through a detection coil. The excitation core is disposed on the detection core at right angles. The film has a magnetic path passing therethrough. The magnetic path, the excitation coil, and the detection coil cooperate with each other to provide a magnetic circuit. The excitation coil and the detection coil provides a bridge circuit in cooperation with each other. When a torque is applied to the rotational shaft, the film causes magnetostriction in correspondence to the torque. The magnetostriction is electrically detected by the bridge circuit.

摘要翻译： 磁致伸缩扭矩传感器包括沿旋转轴的圆周设置的宽度为W的磁致伸缩膜。 该膜根据施加到旋转轴的扭矩而引起磁致伸缩。 扭矩传感器还包括各自具有大致U形构造的激励和检测芯。 这些芯与薄膜相对设置。 激励芯延伸穿过励磁线圈，同时检测芯延伸穿过检测线圈。 激励芯以直角设置在检测芯上。 该胶片具有穿过其中的磁路。 磁路，励磁线圈和检测线圈相互配合以提供磁路。 励磁线圈和检测线圈彼此配合提供桥接电路。 当转矩施加到旋转轴时，膜对应于扭矩引起磁致伸缩。 磁致伸缩由电桥电路电检测。

公开(公告)号：US06543569B1

公开(公告)日：2003-04-08

申请号：US09680699

申请日：2000-10-06

申请人： Yasuo Shimizu ,  Yasuharu Ohyama ,  Katsuji Watanabe ,  Shigeru Yamawaki ,  Atsuhiko Yoneda ,  Yasuhiro Terada

发明人： Yasuo Shimizu ,  Yasuharu Ohyama ,  Katsuji Watanabe ,  Shigeru Yamawaki ,  Atsuhiko Yoneda ,  Yasuhiro Terada

IPC分类号： B62D504

CPC分类号： F16H55/26 ,  B21K1/767 ,  B62D3/123 ,  B62D3/126 ,  B62D5/04 ,  B62D5/0421 ,  F16H55/08 ,  F16H55/285 ,  Y10T74/1906 ,  Y10T74/19953

摘要： An electric power steering apparatus comprising a rack shaft having two racks, a first rack-and-pinion mechanism for transferring a steering torque to the rack shaft, and a second rack-and-pinion mechanism for transferring an assist torque to the rack shaft. The second rack-and-pinion mechanism includes a pinion and a rack both being helical gears so that a large torque can be transmitted to the rack shaft. Teeth of the pinion and rack are arc profiled. The arc profiled teeth mesh with each other through a large contact area of concave and convex surfaces thereof and hence with a reduced contact pressure compared to involute profiled teeth. The arc profiled teeth thus have increased surface fatigue strength, bending strength and bending fatigue strength and can transmit an assist torque sufficiently to the rack shaft. Moreover, they have durability sufficient to withstand a torque load of a motor inertia.

摘要翻译： 一种电动助力转向装置，包括具有两个齿条的齿条轴，用于将转向转矩传递到齿条轴的第一齿条和小齿轮机构，以及用于将辅助转矩传递到齿条轴的第二齿条齿轮机构。 第二齿条齿轮机构包括小齿轮和齿条，两者都是斜齿轮，从而能够将大的扭矩传递到齿条轴。 小齿轮和齿条的牙齿呈弧形。 弧形牙齿通过其凹凸表面的大的接触面彼此啮合，因此与渐开线成型齿相比具有降低的接触压力。 因此，弧形牙齿具有增加的表面疲劳强度，弯曲强度和弯曲疲劳强度，并且可以将足够的辅助扭矩传递到齿条轴。 此外，它们具有足以承受电动机惯性的转矩负载的耐久性。

公开(公告)号：US20050235768A1

公开(公告)日：2005-10-27

申请号：US11114559

申请日：2005-04-26

申请人： Yasuo Shimizu ,  Katsuji Watanabe ,  Takahiro Aoki ,  Yasuhiro Terada ,  Ryoji Toyofuku

发明人： Yasuo Shimizu ,  Katsuji Watanabe ,  Takahiro Aoki ,  Yasuhiro Terada ,  Ryoji Toyofuku

IPC分类号： B62D5/04 ,  F16H1/16 ,  F16H55/06 ,  F16H55/24

CPC分类号： B62D5/0409 ,  Y10T74/19623 ,  Y10T74/19828

摘要： Worm gear mechanism includes a driving worm, a torque delivering worm wheel meshing with the worm, and an auxiliary worm wheel superimposed on the torque delivering worm wheel. The auxiliary worm wheel has a pitch diameter greater than that of the torque delivering worm wheel. The auxiliary worm wheel is biased against the driving worm wheel via a biasing member in the form of a leaf spring.

摘要翻译： 蜗轮机构包括驱动蜗杆，与蜗杆啮合的扭矩输送蜗轮，以及叠加在扭矩传递蜗轮上的辅助蜗轮。 辅助蜗轮的直径大于扭矩输送蜗轮的直径。 辅助蜗轮通过叶簧形式的偏置构件偏压驱动蜗轮。

公开(公告)号：US07814808B2

公开(公告)日：2010-10-19

申请号：US11114559

申请日：2005-04-26

申请人： Yasuo Shimizu ,  Katsuji Watanabe ,  Takahiro Aoki ,  Yasuhiro Terada ,  Ryoji Toyofuku

发明人： Yasuo Shimizu ,  Katsuji Watanabe ,  Takahiro Aoki ,  Yasuhiro Terada ,  Ryoji Toyofuku

IPC分类号： F16H55/18

CPC分类号： B62D5/0409 ,  Y10T74/19623 ,  Y10T74/19828

摘要： Worm gear mechanism includes a driving worm, a torque delivering worm wheel meshing with the worm, and an auxiliary worm wheel superimposed on the torque delivering worm wheel. The auxiliary worm wheel has a pitch diameter greater than that of the torque delivering worm wheel. The auxiliary worm wheel is biased against the driving worm wheel via a biasing member in the form of a leaf spring.

摘要翻译： 蜗轮机构包括驱动蜗杆，与蜗杆啮合的扭矩输送蜗轮，以及叠加在扭矩传递蜗轮上的辅助蜗轮。 辅助蜗轮的直径大于扭矩输送蜗轮的直径。 辅助蜗轮通过叶簧形式的偏置构件偏压驱动蜗轮。

公开(公告)号：US06976556B2

公开(公告)日：2005-12-20

申请号：US10618476

申请日：2003-07-11

申请人： Yasuo Shimizu ,  Katsuji Watanabe ,  Yasuhiro Terada

发明人： Yasuo Shimizu ,  Katsuji Watanabe ,  Yasuhiro Terada

IPC分类号： B62D5/04 ,  F16H55/22 ,  B62D5/06

CPC分类号： B62D5/0409 ,  F16H55/22

摘要： Electric power steering apparatus includes an electric motor for producing steering assist torque corresponding to steering torque applied to a steering system, and a worm gear mechanism for transmitting the steering assist torque to the steering system. The worm of the worm gear mechanism has a pressure angle greater than a pressure angle of the worm wheel, so as to reduce an actual meshing pitch circle diameter of the worm in the worm gear mechanism.

摘要翻译： 电动助力转向装置包括用于产生对应于施加到转向系统的转向转矩的转向辅助转矩的电动机和用于将转向辅助转矩传递到转向系统的蜗轮机构。 蜗轮机构的蜗杆具有大于蜗轮的压力角的压力角，从而减小蜗轮蜗杆机构中蜗杆的实际啮合节圆直径。

公开(公告)号：US06832662B2

公开(公告)日：2004-12-21

申请号：US10695150

申请日：2003-10-27

申请人： Yasuo Shimizu ,  Katsuji Watanabe ,  Yasuhiro Terada

发明人： Yasuo Shimizu ,  Katsuji Watanabe ,  Yasuhiro Terada

IPC分类号： B62D504

CPC分类号： B62D5/0409 ,  F16H55/24 ,  F16H57/021 ,  F16H2057/0213 ,  Y10T74/19623 ,  Y10T74/19842

摘要： An electric power steering apparatus with an electric motor generating an assistant steering force for transmission to the steering system, a worm shaft rotated by the electric motor, a worm gear on the worm shaft that rotates therewith, a worm wheel rotated by the worm gear, a pinion shaft that rotates with the worm gear, supporting units that support both ends of the worm shaft so as to allow rotation thereof, and a distortion prevention unit that prevents distortion of the worm shaft. The supporting units may support the ends of the worm shaft without play.

摘要翻译： 一种电动助力转向装置，其具有产生用于向转向系统传递的辅助转向力的电动机，由电动机旋转的蜗杆轴，与其一起旋转的蜗杆轴上的蜗轮，由蜗轮旋转的蜗轮， 与蜗轮一起旋转的小齿轮轴，支撑蜗杆轴的两端的支撑单元，以便允许其旋转;以及防变形单元，其防止蜗杆轴的变形。 支撑单元可以在不起动的情况下支撑蜗杆的端部。

公开(公告)号：US06390230B1

公开(公告)日：2002-05-21

申请号：US09679915

申请日：2000-10-05

申请人： Yasuo Shimizu ,  Yasuharu Ohyama ,  Katsuji Watanabe ,  Shigeru Yamawaki ,  Atsuhiko Yoneda ,  Yasuhiro Terada

发明人： Yasuo Shimizu ,  Yasuharu Ohyama ,  Katsuji Watanabe ,  Shigeru Yamawaki ,  Atsuhiko Yoneda ,  Yasuhiro Terada

IPC分类号： B62D312

CPC分类号： F16H55/26 ,  B21K1/767 ,  B62D3/123 ,  B62D3/126 ,  B62D5/0421 ,  F16H55/08 ,  F16H55/285 ,  Y10T74/1967

摘要： An electric power steering apparatus having a motor for producing assist torque according to the steering torque, and a rack and pinion mechanism for transferring torque assistance to the rack shaft. The pinion and rack of the rack and pinion mechanism are both helical gears, and transfer high torque to the rack shaft. The helical gears have a curved arc tooth profile. The teeth of a curved arc tooth profile gear set mesh with contact between convex and concave surfaces. The contact area is therefore increased and contact pressure is decreased compared with involute teeth. Surface fatigue strength, bending strength, and bending fatigue strength are thus greater compared with involute teeth. The combined steering torque and assist torque is efficiently transferred to the rack shaft, and durability is sufficient to withstand torque loads from motor inertia.

摘要翻译： 一种电动助力转向装置，具有根据转向转矩产生辅助转矩的电动机和用于将转矩辅助传递给齿条轴的齿条齿轮机构。 齿条和小齿轮机构的小齿轮和齿条都是斜齿轮，并将高扭矩传递到齿条轴。 螺旋齿轮具有弯曲的弧形齿廓。 弯曲弧齿轮齿轮组的齿与凸表面和凹面之间的接触啮合。 因此，与渐开线齿相比，接触面积增大，接触压力降低。 因此，与渐开线齿相比，表面疲劳强度，弯曲强度和弯曲疲劳强度更大。 组合的转向扭矩和辅助扭矩被有效地传递到齿条轴，并且耐久性足以承受来自电动机惯性的转矩负载。

公开(公告)号：US07954827B2

公开(公告)日：2011-06-07

申请号：US12028279

申请日：2008-02-08

申请人： Kouhei Maruyama ,  Yasuhiro Terada ,  Yutaka Horiuchi ,  Nobuo Sugitani ,  Takashi Yanagi

发明人： Kouhei Maruyama ,  Yasuhiro Terada ,  Yutaka Horiuchi ,  Nobuo Sugitani ,  Takashi Yanagi

IPC分类号： B62D17/00 ,  B62D5/04 ,  B60G17/016

CPC分类号： B62D7/146 ,  B62D5/0481 ,  B62D17/00

摘要： A steering controller for an electric power steering device 110 includes a base signal computing part 51 for computing a base signal DT in accordance with at least the steering torque; a damper compensation signal computing part 52 for computing a damper compensation signal in accordance with an angular velocity of an electric motor 4 or a speed of steering wheel turn; and an inertia compensation signal computing part 53 for compensating inertia and viscosity in the steering unit. The electric motor is driven by a target signal IM1 obtained by compensating the base signal with a damper compensation signal and an inertia compensation signal, to provide a steering auxiliary force. The target signal of the auxiliary torque is compensated so that a difference between a reference self-aligning torque of front wheel in a front wheel steering vehicle and a self-aligning torque of front wheel in an all-wheel steering vehicle is provided to a driver as a responsive feeling from the steering torque.

摘要翻译： 用于电动助力转向装置110的转向控制器包括：基本信号计算部51，用于根据至少转向转矩计算基准信号DT; 用于根据电动机4的角速度或方向盘转动的速度计算阻尼器补偿信号的阻尼器补偿信号计算部52; 以及用于补偿转向单元中的惯性和粘度的惯性补偿信号计算部件53。 电动机由通过用阻尼器补偿信号和惯性补偿信号补偿基本信号而获得的目标信号IM1驱动，以提供转向辅助力。 辅助转矩的目标信号被补偿，使得前轮转向车辆中的前轮的参考自动对准转矩与全轮转向车辆中的前轮的自调整扭矩之间的差提供给驾驶员 作为来自转向扭矩的响应感。

公开(公告)号：US20120177223A1

公开(公告)日：2012-07-12

申请号：US13497299

申请日：2011-07-26

申请人： Takeo Kanamori ,  Shinichi Yuzuriha ,  Yutaka Banba ,  Yasuhiro Terada

发明人： Takeo Kanamori ,  Shinichi Yuzuriha ,  Yutaka Banba ,  Yasuhiro Terada

IPC分类号： H04B15/00

CPC分类号： G10L21/0208 ,  G10L2021/02165 ,  H04R2410/01 ,  H04R2410/05 ,  H04R2430/25

摘要： A power spectrum estimation unit (200) obtains an estimated sound power spectrum Ps(ω), based on a power spectrum P1(ω) and on a first calculated value obtained by at least multiplying a power spectrum P2(ω) by a weight coefficient A2(ω). A coefficient update unit (300) updates the weight coefficient A2(ω) and a weight coefficient A1(ω) so that a second calculated value approximates to the power spectrum P1(ω). The second calculated value is obtained by adding at least two values obtained by multiplying the power spectrum P2(ω) and the estimated target sound power spectrum Ps(ω) by the weight coefficient A2(ω) and the weight coefficient A1(ω), respectively.

摘要翻译： 功率谱估计单元（200）基于功率谱P1（ω）获得估计声功率谱Ps（ω），并且通过至少将功率谱P2（ω）乘以权重系数获得的第一计算值 A2（ω）。 系数更新单元（300）更新权重系数A2（ω）和加权系数A1（ω），使得第二计算值近似于功率谱P1（ω）。 通过将功率谱P2（ω）和估计的目标声功率谱Ps（ω）乘以权重系数A2（ω）和权重系数A1（ω）而获得的至少两个值来获得第二计算值， 分别。

公开(公告)号：US20120140948A1

公开(公告)日：2012-06-07

申请号：US13390373

申请日：2011-06-16

申请人： Yasuhiro Terada ,  Takeo Kanamori

发明人： Yasuhiro Terada ,  Takeo Kanamori

IPC分类号： H04R3/00

CPC分类号： H04R29/006 ,  H04R1/406 ,  H04R3/005 ,  H04R25/407 ,  H04R2430/03

摘要： A directional microphone apparatus and directivity control method that corrects a level difference and a phase difference generated in a low band in a plurality of non-directional microphone units, improve the directivity, and reduce the size are provided. Level difference calculation section (105) calculates the level difference between first signal x1(t) obtained by first non-directional microphone unit (101) and second signal x2(t) obtained by second non-directional microphone unit (102), and correction parameter calculation section (106) calculates coefficients of a linear IIR filter configuring correction process section (103) based on the level difference. Correction process section (103) simultaneously corrects the level difference and a phase difference in the low band between two non-directional microphone units by using the calculated coefficients.

摘要翻译： 定向麦克风装置和方向性控制方法，其校正多个非定向麦克风单元中的低频中产生的电平差和相位差，提高方向性，并提供减小尺寸。 电平差计算部（105）计算由第一非定向麦克风单元（101）获得的第一信号x1（t）和由第二非定向麦克风单元（102）获得的第二信号x2（t）之间的电平差， 参数计算部（106）基于该电平差计算线性IIR滤波器构成校正处理部（103）的系数。 校正处理部（103）通过使用计算出的系数同时校正两个非定向麦克风单元之间的低频带的电平差和相位差。