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1. 发明授权

US5355315A Electric power steering apparatus 失效
标题翻译：电动助力转向装置
公开(公告)号：US5355315A
公开(公告)日：1994-10-11
申请号：US942739
申请日：1992-09-09
申请人： Toshihiko Daido , Hirofumi Matsuoka , Mitsuhiko Nishimoto , Osamu Sano
发明人： Toshihiko Daido , Hirofumi Matsuoka , Mitsuhiko Nishimoto , Osamu Sano
IPC分类号： B62D5/04 , B62D6/10 , G01L5/22
CPC分类号： B62D5/0406 , B62D6/10 , G01L5/221
摘要： In an electric power steering apparatus, a signal processing circuit for a torque sensor for detecting a steering torque and a control circuit for controlling the driving of a steering assisting electric motor on the basis of the result of the signal processing by the signal processing circuit are formed on the same common circuit board. The common circuit board is mounted inside a housing accommodating the torque sensor, a housing accommodating a steering shaft, or a housing accommodating a steering gear.
摘要翻译：在电动助力转向装置中，根据信号处理电路的信号处理结果，用于检测转向转矩的转矩传感器的信号处理电路和用于控制转向辅助电动机的驱动的控制电路，形成在相同的公共电路板上。公共电路板安装在容纳扭矩传感器的壳体内，容纳转向轴的壳体或容纳舵机的壳体。

2. 发明授权

US5480000A Electric power steering apparatus 失效
标题翻译：电动助力转向装置
公开(公告)号：US5480000A
公开(公告)日：1996-01-02
申请号：US280015
申请日：1994-07-25
申请人： Toshihiko Daido , Mitsuhiko Nishimoto , Hirofumi Matsuoka
发明人： Toshihiko Daido , Mitsuhiko Nishimoto , Hirofumi Matsuoka
IPC分类号： B62D5/04 , B62D6/02
CPC分类号： B62D5/0466 , B62D5/046 , B62D5/0463
摘要： In an electric power steering apparatus, in which an electric motor for assisting the steering torque is adapted to be driven by PWM wave, and the duty of the PWM wave is adapted to be under the feedback control in time series by detecting the driving current of the motor, when the direction of the target current in this time for the feedback control is different from that of the former time, or when the detected driving current in the motor is zero, the former target voltage of the motor for the feedback control is forcibly set to the voltage value decided in reference to the minimum duty of the PWM wave for driving the motor.
摘要翻译：在用于辅助转向转矩的电动机被PWM波驱动的电动助力转向装置中，PWM波的占空比通过检测驱动电流的时间序列来适应于反馈控制电机，此时反馈控制中目标电流的方向与前一时刻的方向不同，或当电动机检测到的驱动电流为零时，反馈控制电机的前一目标电压为强制设置为参考用于驱动电机的PWM波的最小占空比决定的电压值。

3. 发明授权

US5600559A Electric power steering apparatus 失效
标题翻译：电动助力转向装置
公开(公告)号：US5600559A
公开(公告)日：1997-02-04
申请号：US638691
申请日：1996-04-26
申请人： Mitsuhiko Nishimoto , Hirofumi Matsuoka
发明人： Mitsuhiko Nishimoto , Hirofumi Matsuoka
IPC分类号： B62D6/00 , B62D5/04 , B62D119/00
CPC分类号： B62D5/0466 , B62D5/0493
摘要： The present invention provides an electric power steering apparatus in which it is decided whether or not steering torque is in a predetermined drive inhibition area, and when the term in which the decision result is logically inconsistent with driving instruction for the motor in accordance with the steering torque is shorter than a predetermined period of time, a timer is reset to drive the motor. As a result, the compensation of the inertia of said motor can be controlled even when the steering torque is small. Further, in the electric power steering apparatus, the timer is also reset to drive the motor when the steering torque is in a dead zone and a driving current for the motor is smaller than a predetermined value. As a result, the drive of the motor can be controlled also when a steering wheel is returned to its initial position.
摘要翻译：本发明提供一种电动助力转向装置，其中确定转向转矩是否在预定的驱动禁止区域，并且当判定结果在逻辑上与根据转向的电动机的驱动指令不一致的项扭矩短于预定时间段，定时器被复位以驱动马达。结果，即使在转向转矩小的情况下也能够控制所述电动机的惯性的补偿。此外，在电动助力转向装置中，当转向转矩处于死区并且电动机的驱动电流小于预定值时，定时器也被复位以驱动电动机。结果，当方向盘返回到其初始位置时也可以控制马达的驱动。

4. 发明授权

US5569991A Electric power steering apparatus 失效
标题翻译：电动助力转向装置
公开(公告)号：US5569991A
公开(公告)日：1996-10-29
申请号：US362837
申请日：1994-12-23
申请人： Hirofumi Matsuoka , Mitsuhiko Nishimoto
发明人： Hirofumi Matsuoka , Mitsuhiko Nishimoto
IPC分类号： B62D5/04 , B62D6/00 , B62D119/00
CPC分类号： B62D5/0466
摘要： The invention provides an electric power steering apparatus, in which one of a pair of switching elements that has been PWM controlled is turned off and the other switching element is PWM controlled instead when a steering wheel is returning to its neutral position, thereby allowing the steering wheel to return smoothly and preventing a control hunting.
摘要翻译：本发明提供了一种电动助力转向装置，其中已经被PWM控制的一对开关元件中的一个被切断，另一个开关元件被PWM控制，而不是当方向盘返回到其中立位置时，从而允许转向车轮顺利返回，防止控制狩猎。

5. 发明授权

US5485067A Electric power steering apparatus 失效
标题翻译：电动助力转向装置
公开(公告)号：US5485067A
公开(公告)日：1996-01-16
申请号：US270055
申请日：1994-07-01
申请人： Mitsuhiko Nishimoto , Hirofumi Matsuoka , Hiroki Amako
发明人： Mitsuhiko Nishimoto , Hirofumi Matsuoka , Hiroki Amako
IPC分类号： B62D5/04 , G05B5/00
CPC分类号： B62D5/0493
摘要： An electric power steering apparatus which is provided with a CPU for outputting a drive control signal of an electric motor for assisting the steering force on the basis of the detected steering torque, and a drive inhibition circuit for outputting a signal to stop the operation of the electric motor when the direction of the electric motor operation and the direction of the detected steering torque are opposite to each other, the output of the drive inhibition circuit is inputted to the CPU, which monitors the normal or abnormal condition of the drive inhibition circuit. While the abnormal condition of the CPU continues for a predetermined time period, the drive stop condition of the electric motor is kept. When the detected torque is not smaller than the predetermined value, the drive of the electric motor in the direction opposite to that of the detected torque is inhibited.
摘要翻译：一种电动助力转向装置，其具备：CPU，用于根据检测到的转向转矩输出用于辅助转向力的电动机的驱动控制信号;以及驱动禁止电路，用于输出信号以停止当电动机操作的方向和检测到的转向转矩的方向彼此相反时，电动机将驱动禁止电路的输出输入到监视驱动禁止电路的正常或异常状态的CPU。当CPU的异常状态持续预定时间段时，保持电动机的驱动停止状态。当检测到的转矩不小于预定值时，电动机的驱动与检测转矩相反的方向被禁止。

6. 发明授权

US5271474A Electric power steering apparatus 失效
标题翻译：电动助力转向装置
公开(公告)号：US5271474A
公开(公告)日：1993-12-21
申请号：US9875
申请日：1993-01-27
申请人： Mitsuhiko Nishimoto , Hirofumi Matsuoka , Hidetoshi Tabuse
发明人： Mitsuhiko Nishimoto , Hirofumi Matsuoka , Hidetoshi Tabuse
IPC分类号： B62D5/04 , B62D6/00 , B62D101/00 , B62D119/00
CPC分类号： B62D5/0493
摘要： An electric power steering apparatus has a main CPU for performing a drive control for steering assistance over a steering assistance motor based on the detected steering torque and detected vehicle speed and a sub CPU for detecting abnormality in the main CPU by monitoring inputs and outputs to and from the main CPU, wherein the sub CPU is destined to detect abnormality in the main CPU only when the drive control for steering assistance is performed by the main CPU.

7. 发明授权

US5360077A Electric power steering apparatus 失效
标题翻译：电动助力转向装置
公开(公告)号：US5360077A
公开(公告)日：1994-11-01
申请号：US69070
申请日：1993-05-28
申请人： Mitsuhiko Nishimoto , Hirofumi Matsuoka , Hidetoshi Tabuse
发明人： Mitsuhiko Nishimoto , Hirofumi Matsuoka , Hidetoshi Tabuse
IPC分类号： B62D5/04
CPC分类号： B62D5/0493 , B62D5/0478
摘要： Disclosed is an electric power steering apparatus, in which a gate circuit is provided that allows the actuation of a motor and a clutch only when a signal indicating normal operation is obtained from both of two controllers of dual configuration and that immediately disables steering assisting action when either one or both of the two controllers have gone out of control, and in which a power supply for supplying power to the controllers is connected in common to the two controllers, to prevent a latch-up of either controller.
摘要翻译：公开了一种电动助力转向装置，其中提供了一种门电路，其仅在从双重配置的两个控制器中获得指示正常操作的信号时才允许马达和离合器的致动，并且立即禁用转向辅助动作，两个控制器中的一个或两个已经失去控制，并且其中向控制器供电的电源共同连接到两个控制器，以防止任一控制器的闩锁。

8. 发明授权

US5076381A Power steering apparatus and rotary detector used therefor 失效
标题翻译：动力转向装置和旋转检测器
公开(公告)号：US5076381A
公开(公告)日：1991-12-31
申请号：US377385
申请日：1989-07-10
申请人： Toshihiko Daido , Hirofumi Matsuoka , Hidetoshi Tabuse
发明人： Toshihiko Daido , Hirofumi Matsuoka , Hidetoshi Tabuse
IPC分类号： B62D5/04
CPC分类号： B62D5/0436 , B62D5/0466
摘要： An electric power steering apparatus of the invention is provided with a rotary detector for detecting a rotational position of a motor, a vehicle speed sensor for detecting a vehicle speed, a torque sensor for detecting a steering torque, a calculating means for calculating angular velocity of aforesaid motor on the basis of aforesaid rotational position, and a target angular velocity setting means, wherein flow quantity of electric current to a motor for assisting steering force is made larger, when the steering torque is within a dead zone, correspondingly to the increase of the deviation on the basis of the deviation between the target angular velocity and the calculated angular velocity, thereby stabilized steering feeling in the vicinity of the steering angle middle point at the time of returning the steering wheel steered by mostly using the steering torque being in the dead zone.And this power steering apparatus is capable of fully following up the rotation of the steering wheel as well as preventing the extreme returning of the steering wheel at the time of returning control, by subtracting subtractor current which is made small when both the steering torque and angular velocity are large, and made large when the steering torque is small and the angular velocity is large, from the driving current.

9. 发明授权

US4961474A Steering angle middle point detecting apparatus 失效
标题翻译：转向角中点检测装置
公开(公告)号：US4961474A
公开(公告)日：1990-10-09
申请号：US377867
申请日：1989-07-10
申请人： Toshihiko Daido , Hirofumi Matsuoka , Hidetoshi Tabuse
发明人： Toshihiko Daido , Hirofumi Matsuoka , Hidetoshi Tabuse
IPC分类号： B62D15/02
CPC分类号： B62D15/0245
摘要： A steering angle middle point detecting apparatus of the invention is provided with a vehicle speed sensor for detecting vehicle speed, a torque sensor for detecting at regular intervals steering torque to be added to a steering wheel, a steering position detecting means for detecting a steering position of a steering mechanism, a means for comparing a steering torque set value previously set corresponding to the vehicle speed with the steering torque detected by the torque sensor, and a steering angle middle point calculating means for calculating a middle point of a steering angle by using the steering position of the steering mechanism detected by the steering position detecting means when the steering torque is smaller than the steering torque set value, which judges that the vehicle goes straight when the detected steering torque is smaller than the steering torque set value corresponding to the vehicle speed, and judges the steering position at that time to be the middle point of the steering angle. Further, another steering angle middle point detecting apparatus is added: a judgment of an angle velocity of the steering angle, that is, a rotational speed of the steering wheel or variation of the steering torque; determines that the vehicle goes straight when it is at the specified value or less, and judges the steering position at that time to be the middle point of the steering angle.

10. 发明授权

US5097918A Motor-driven power steering apparatus 失效
标题翻译：电机驱动力转向装置
公开(公告)号：US5097918A
公开(公告)日：1992-03-24
申请号：US377868
申请日：1989-07-10
申请人： Toshihiko Daido , Hirofumi Matsuoka , Hidetoshi Tabuse
发明人： Toshihiko Daido , Hirofumi Matsuoka , Hidetoshi Tabuse
IPC分类号： B62D5/04
CPC分类号： B62D5/0436 , B62D5/0466
摘要： The electric power steering apparatus of the invention is provided with a rotary detector for detecting a rotational position of a motor, a torque sensor for detecting a steering torque, and when the steering torque is within a dead zone, by increasing flow current to a motor for assisting steering force correspondingly to increase of a steering angle decided on the basis of the rotational position of the motor, the steering assisting force corresponding to the steering angle can be gained at the time of returning the steering wheel steered by mostly using by the steering torque being in the dead zone, and the proper steering assisting force can also be gained by making flow quantity corresponding to the steering angle to be minimum within a predetermined speed range and by increasing it at lower or higher speed than the predetermined speed range when the steering wheel is returned during a time of running at a low speed (such as a time of slowing down).

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