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1. 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.

2. 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。

3. 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.

4. 发明授权

US5303156A Electric power steering apparatus having overload protection 失效
标题翻译：具有过载保护功能的电动助力转向装置
公开(公告)号：US5303156A
公开(公告)日：1994-04-12
申请号：US910696
申请日：1992-07-08
申请人： Hirofumi Matsuoka , Hidetoshi Tabuse
发明人： Hirofumi Matsuoka , Hidetoshi Tabuse
IPC分类号： B62D5/04
CPC分类号： B62D5/0487
摘要： In an electric power steering apparatus which assists a steering power by an electric motor, the difference between currents flowing into and flowing out from the electric motor is obtained, and an abnormality of the electric motor due to a ground fault is detected on the basis of this difference. When a state in which this difference is greater than a given value has continued for a predetermined period of time, the abnormality of the electric motor is detected. Upon the detection of the abnormality of the electric motor, a relay contact of a fail-safe relay circuit is made off so that the supply of electric power from a main power supply to the electric motor is cut off, thereby inhibiting the electric motor from assisting the steering power.
摘要翻译：在通过电动机辅助转向功率的电动助力转向装置中，获得从电动机流入和流出的电流之间的差异，并且基于接地故障检测到电动机由于接地故障而发生的异常这个差异。当该差大于给定值的状态持续预定时间时，检测到电动机的异常。在检测到电动机的异常时，断开故障安全继电器电路的继电器触点，从而切断从主电源向电动机供电的电力，从而抑制电动机协助转向力。

5. 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.

6. 发明授权

US5339243A Power steering apparatus 失效
标题翻译：动力转向装置
公开(公告)号：US5339243A
公开(公告)日：1994-08-16
申请号：US935596
申请日：1992-08-26
申请人： Hirofumi Matsuoka , Hidetoshi Tabuse
发明人： Hirofumi Matsuoka , Hidetoshi Tabuse
IPC分类号： B62D6/02 , B62D5/04 , B62D6/00 , B62D101/00 , B62D119/00
CPC分类号： B62D5/049
摘要： A power steering apparatus having a torque sensor for detecting steering force, an actuator for assisting the steering force according to the torque detected by the torque sensor, two vehicle speed sensors for detecting vehicle speed, and a microcomputer for controlling the actuator according to the detection results by the vehicle speed sensors. When the difference between the vehicle speed values detected by the two vehicle speed sensors becomes greater than a predetermined value, the greater vehicle speed value of the two is integrated to obtain a control vehicle speed value for control of the actuator. When the vehicle speed value difference is greater than the predetermined value and remains in that state for more than a predetermined duration of time, either a predetermined vehicle speed value is set as the control vehicle speed value or the operation of the actuator is disabled.
摘要翻译：一种具有用于检测转向力的转矩传感器的动力转向装置，用于根据由转矩传感器检测到的转矩来辅助转向力的致动器，用于检测车速的两个车速传感器和用于根据检测来控制致动器的微型计算机结果由车速传感器。当由两个车速传感器检测到的车速值之差变得大于预定值时，二者的车速值越大，得到用于控制致动器的控制车速值。当车速值差大于预定值并且在该状态下保持超过预定持续时间时，将预定车速值设定为控制车速值或致动器的操作被禁用。

7. 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).

8. 发明授权

US5040629A Motor-driven power steering apparatus 失效
标题翻译：电动助力转向装置
公开(公告)号：US5040629A
公开(公告)日：1991-08-20
申请号：US524376
申请日：1990-05-15
申请人： Hirofumi Matsuoka , Hidetoshi Tabuse
发明人： Hirofumi Matsuoka , Hidetoshi Tabuse
IPC分类号： B62D5/04
CPC分类号： B62D5/0466
摘要： A motor-driven power steering apparatus comprising a steering assisting motor, a torque sensor detecting steering torque, a vehicle speed sensor, and a steering angular velocity detecting unit detecting steering angular velocity of steering mechanism. The power steering apparatus sets the value of current to be delivered to the steering assisting motor in correspondence with the detected steering torque and vehicle speed. The power steering apparatus sets the current value to be 0 when the steering torque remains in the dead zone in which the steering torque value is less than the first predetermined value. If the steering torque is more than the first predetermined value and less than the second predetermined value, the current value is set to increase as the steering torque value increases. If the steering torque is in excess of the second predetermined value, the growth rate of the current value against the steering torque is set to diminish as the vehicle speed rises. Further, the apparatus sets the subtraction current of which value increases as the detected steering angular velocity and the vehicle speed increases, and then subtracts the subtraction current from the set current value, transmitting the substracted result to the motor. Since the value of the subtraction current grows when the vehicle runs fast and a small value of current is set, only a small amount of current flows through the motor.

9. 发明授权

US4977507A Motor-driven power steering control apparatus 失效
标题翻译：电动助力转向控制装置
公开(公告)号：US4977507A
公开(公告)日：1990-12-11
申请号：US399722
申请日：1989-08-28
申请人： Hirofumi Matsuoka , Hidetoshi Tabuse
发明人： Hirofumi Matsuoka , Hidetoshi Tabuse
IPC分类号： B62D5/04
CPC分类号： B62D5/0487
摘要： The motor-driven power steering control apparatus of the invention detects overload of a motor according to the calculation of coil resistance and temperature detection based thereon. The coil resistance is calculated according to terminal voltage or effective voltage based on duty ratio, and counter-electromotive force, and the driving current. Thereby overload of the motor can be detected without delay.

10. 发明授权

US4987964A Electric power steering system 失效
标题翻译：电动助力转向系统
公开(公告)号：US4987964A
公开(公告)日：1991-01-29
申请号：US384603
申请日：1989-07-25
申请人： Hidetoshi Tabuse
发明人： Hidetoshi Tabuse
IPC分类号： B62D5/04
CPC分类号： B62D5/0457
摘要： An electric power steering system comprising a power unit consisting essentially of drive circuits for an electric motor and the like, and a control unit separate from the power unit and consisting essentially of a control circuit for controlling the drive circuits. The control unit is connected to each of the drive circuits of the power unit by a transmission line for the control unit to transmit therethrough "ON" or "OFF" representing logical control signals to the drive circuit to thereby control the drive circuit. The power steering system has first signal conversion means provided in the control unit for converting an "ON" representing logical control signal to a pulse signal, and second signal conversion means provided in the power unit and connected to the first signal conversion means by a transmission line for producing an "ON" logical control signal when the input signal given is the pulse signal or for producing an "OFF" logical control signal when the input signal is not the pulse signal.

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