公开(公告)号：US4858134A

公开(公告)日：1989-08-15

申请号：US98185

申请日：1987-09-18

申请人： Kunihiko Eto ,  Shiro Takeuchi ,  Yutaka Mori ,  Shigeo Tanooka ,  Kazumasa Kodama ,  Tsutomu Matsumoto

发明人： Kunihiko Eto ,  Shiro Takeuchi ,  Yutaka Mori ,  Shigeo Tanooka ,  Kazumasa Kodama ,  Tsutomu Matsumoto

IPC分类号： B62D6/02 ,  B62D6/00 ,  B62D113/00 ,  B62D127/00

CPC分类号： B62D6/00

摘要： There is disclosed a device for controlling steering force in a power steering apparatus having an electromagnetic control valve according to road and driving conditions. The device includes a car speed sensor, a steering angle sensor, first arithmetic means, second arithmetic means, correcting means, control current arithmetic means and controlling means. The first arithmetic means computes a driving condition index by using car speed information. The second arithmetic means computes a road condition index by using steering angle signals. The correcting means converts the driving condition index into a correction driving condition index which takes any one of several stepwise-varied values. The control current arithmetic means computes an output control current value applied to electromagnetic control valve by the controlling means. The device further includes means for detecting lateral acceleration utilized for controlling the steering force.

摘要翻译： 公开了一种用于在具有根据道路和驾驶条件的电磁控制阀的动力转向装置中控制转向力的装置。 该装置包括车速传感器，转向角传感器，第一运算装置，第二算术装置，校正装置，控制电流运算装置和控制装置。 第一算术装置通过使用车速信息来计算驾驶条件指数。 第二运算装置通过使用转向角信号来计算道路状况指标。 校正装置将驾驶条件指数转换为采用几个逐步变化值中的任何一个的校正驱动条件指数。 控制电流运算装置计算由控制装置施加到电磁控制阀的输出控制电流值。 该装置还包括用于检测用于控制转向力的横向加速度的装置。

公开(公告)号：US4893239A

公开(公告)日：1990-01-09

申请号：US156012

申请日：1988-02-16

申请人： Kunihiko Eto ,  Yutaka Mori ,  Shigeo Tanooka ,  Kazumasa Kodama

发明人： Kunihiko Eto ,  Yutaka Mori ,  Shigeo Tanooka ,  Kazumasa Kodama

IPC分类号： B60G17/00 ,  B60G17/015 ,  B62D5/00 ,  B62D6/00 ,  B62D6/02

CPC分类号： B62D6/00 ,  B62D5/00

摘要： A device for detecting driving condition faced by an operator of an automobile. The device includes an automobile speed sensor, first arithmetic means, second arithmetic means and compensating means. The first arithmetic means computes a driving condition index by using automobile speed information. The second arithmetic means computes limit value changing according to the increment in the automobile speed. The compensating means compare the change amount of the driving condition index for a predetermined time period with the limit value and compensate the driving condition index in such a way that the change amount of the driving condition is limited to the limit value when the change amount exceeds the limit value in order to give the operator a natural feel of the road.

公开(公告)号：US4773498A

公开(公告)日：1988-09-27

申请号：US946050

申请日：1986-12-24

申请人： Kunihiko Eto ,  Yutaka Mori ,  Kazumasa Kodama

发明人： Kunihiko Eto ,  Yutaka Mori ,  Kazumasa Kodama

IPC分类号： B62D6/00 ,  B62D101/00 ,  B62D103/00 ,  B62D109/00 ,  B62D113/00 ,  B62D127/00 ,  B62D5/06

CPC分类号： B62D6/00

摘要： An assisting power controller for a vehicle power steering device is provided with a microcomputer, which stores in a random access memory a plurality of the latest steering angle data each detected from a steering angle detector each time the vehicle runs a predetermined distance. The microprocessor processes the plurality of steering angle data to calculate a first driving index representing the road condition and then, to decide a first electric current meeting the road condition. The microprocessor also stores in the memory a plurality of the latest vehicle speed data each detected from a speed sensor each time the vehicle runs the predetermined distance. The microprocessor processes the plurality of vehicle speed data to calculate a second driving index representing the state of maneuver by the driver of the vehicle and then, to decide a second electric current meeting the state of maneuvering. The microprocessor thereafter makes an addition of the first and second electric currents and applies the added electric current to an electromagnetic flow control valve which controls the bypass communication of pressurized fluid between opposite chambers of a power cylinder, to control the assisting power generated by the power cylinder based on the road condition and the state of maneuvering by the driver of the vehicle.

摘要翻译： 一种用于车辆动力转向装置的辅助动力控制器设置有微型计算机，其在随机存取存储器中存储每次在车辆行驶预定距离时从转向角检测器检测到的多个最新转向角数据。 微处理器处理多个转向角数据以计算代表道路状况的第一驾驶指标，然后确定满足道路状况的第一电流。 微处理器还在每次车辆行驶预定距离时从存储器存储从速度传感器检测到的多个最新车速数据。 微处理器处理多个车速数据以计算表示车辆驾驶员的机动状态的第二驾驶指标，然后确定满足机动状态的第二电流。 此后，微处理器增加第一和第二电流，并且将附加的电流施加到电磁流量控制阀，该电磁流量控制阀控制动力缸的相对室之间的加压流体的旁路连通，以控制由动力产生的辅助动力 基于道路状况的汽缸和车辆驾驶员的操纵状态。

公开(公告)号：US4763745A

公开(公告)日：1988-08-16

申请号：US865337

申请日：1986-05-21

申请人： Kunihiko Eto ,  Yutaka Mori ,  Akihiro Oono ,  Kazumasa Kodama

发明人： Kunihiko Eto ,  Yutaka Mori ,  Akihiro Oono ,  Kazumasa Kodama

IPC分类号： B60G17/00 ,  B60G17/015 ,  B62D5/06 ,  B62D6/00 ,  B62D101/00 ,  B62D6/02 ,  G05D16/00

CPC分类号： B62D6/00 ,  B62D5/06 ,  B60G2400/824

摘要： A motor vehicle is provided with a driving status discrimination device, which includes a detector for detecting a parameter signal (e.g., vehicle speed, engine rotational speed, the opening degree of an engine throttle valve, or the like) relating to the driving speed of the motor vehicle at a predetermined interval, and a microcomputer for processing the parameter signals input thereto. The microprocessor calculates a differentiated value of the parameter signal and stores the differential value in a memory device. The memory device has a plurality of memory locations each storing the differential value. The microprocessor futher calculates an integrated value of a plurality of differentiated values stored in the memory device and discriminates various driving status from one another (e.g., a mountain road driving from a high speed driving) based upon the calculated integrated value.

摘要翻译： 机动车辆设置有驾驶状态识别装置，其包括用于检测与驾驶状况相关的驱动状态识别装置的驱动速度的参数信号（例如，车速，发动机转速，发动机节气门阀的开度等） 以及用于处理输入到其中的参数信号的微型计算机。 微处理器计算参数信号的微分值，并将差分值存储在存储器件中。 存储器件具有多个存储位置，每个存储位置存储差分值。 微处理器还计算存储在存储装置中的多个微分值的积分值，并基于计算出的积分值来区分彼此的各种驱动状态（例如，从高速行驶驾驶的山路）。

公开(公告)号：US4793431A

公开(公告)日：1988-12-27

申请号：US92584

申请日：1987-09-03

申请人： Kunihiko Eto ,  Yutaka Mori ,  Kazumasa Kodama

发明人： Kunihiko Eto ,  Yutaka Mori ,  Kazumasa Kodama

IPC分类号： B62D6/02 ,  B62D6/00 ,  B62D113/00 ,  B62D127/00 ,  B62D5/06

CPC分类号： B62D6/007

摘要： There is disclosed an apparatus for controlling the ratio of the assisting force produced by a power-steering system installed in an automobile to the steering torque supplied by the driver. The apparatus primarily consists of a microprocessor, a ROM, and a RAM. The microprocessor controls the amount of current supplied to a solenoid valve according to the velocity of the automobile. The aforementioned ratio is varied according to the driver's condition and the road condition. Four graphs representing the relation of the electric current supplied to the solenoid valve to the angle through which the steering wheel is rotated are stored in the ROM. Each graph has two characteristic curves for two different values of the velosity of the automobile. The microprocessor calculates a driver's condition index from the output signal from a velocity sensor. Also, it calculates a road condition index from the output signal from a steering angle sensor. The value of the current supplied to the solenoid valve is selected from the data stored in the ROM according to these indices.

公开(公告)号：US5208752A

公开(公告)日：1993-05-04

申请号：US620003

申请日：1990-11-30

申请人： Kazumasa Kodama ,  Kunihiko Eto ,  Hisashi Koba ,  Yuzo Kubota ,  Kimio Yamaguchi

发明人： Kazumasa Kodama ,  Kunihiko Eto ,  Hisashi Koba ,  Yuzo Kubota ,  Kimio Yamaguchi

IPC分类号： B62D6/00 ,  B62D6/02 ,  B62D101/00 ,  B62D113/00

CPC分类号： B62D6/02

摘要： A control apparatus for a power-assisted steering system which includes a servo valve associated with a hydraulic power cylinder to selectively direct the flow of fluid under pressure from a source of hydraulic pressure to opposite fluid chambers of the power cylinder in response to operation of a steering wheel and an electrically operated control valve arranged to control hydraulic pressure for power assist applied to the servo valve in accordance with a control current applied thereto. The control apparatus is arranged to control the value of the control current in such a manner that the hydraulic pressure for power assist is decreased when the steering wheel is returned to its neutral position from its steered position during low speed travel of the vehicle and that the hydraulic pressure for power assist is increased when the steering wheel is returned to its neutral position from its steered position during high speed travel of the vehicle.

公开(公告)号：US5122958A

公开(公告)日：1992-06-16

申请号：US552087

申请日：1990-07-13

申请人： Kunihiko Eto ,  Shiro Takeuchi ,  Kazumasa Kodama

发明人： Kunihiko Eto ,  Shiro Takeuchi ,  Kazumasa Kodama

IPC分类号： B62D6/00

CPC分类号： B62D6/00

摘要： An apparatus for controlling the ratio of a assisting force produced by a power steering system installed in an vehicle to a steering torque supplied by the driver wherein the ratio is changed by a solenoid valve arranged in the power steering system. The CPU of the apparatus changes control current to be applied to the solenoid valve using a characteristic map defining change of a base current with respect to changes of the vehicle speed and the steering angle. Further, the CPU increases the control current, when the steering wheel is returned to its neutral angle position, so as to decrease the ratio, increasing the self returning ability of the steering mechanism. The control current applied to the solenoid valve during the returning operation is changed depending upon both the steering angle and the steering speed of the steering wheel using additional characteristic maps.

公开(公告)号：US06718242B1

公开(公告)日：2004-04-06

申请号：US10346119

申请日：2003-01-17

申请人： Yutaka Mori ,  Kazumasa Kodama

发明人： Yutaka Mori ,  Kazumasa Kodama

IPC分类号： G06F700

CPC分类号： B62D5/008

摘要： A vehicular steering device of the present invention aims at suppressing heat generation. If a voltage is applied to a solenoid, a drive force is generated in a lock arm. If the drive force exceeds an urging force of a torsion coil spring, an electric motor is released and assumes an unlocked state. Accordingly, the drive force that is required for the maintenance of the electric motor in the unlocked state can be smaller than the drive force that is required for switching the electric motor from a locked state to the unlocked state. Thus, after the electric motor has been released in the unlocked state, a voltage is intermittently applied to the solenoid so that the electric motor is held in the unlocked state. In this manner, heat generation from the solenoid is suppressed.

摘要翻译： 本发明的车辆转向装置旨在抑制发热。 如果对螺线管施加电压，则在锁定臂中产生驱动力。 如果驱动力超过扭转螺旋弹簧的推动力，则电动马达被释放并呈现解锁状态。 因此，在解锁状态下维持电动机所需的驱动力可以小于将电动机从锁定状态切换到解锁状态所需的驱动力。 因此，在电动机已经在解锁状态被释放之后，电压被间歇地施加到螺线管，使得电动机保持在解锁状态。 以这种方式，可以抑制来自螺线管的发热。

公开(公告)号：US06843344B2

公开(公告)日：2005-01-18

申请号：US10626644

申请日：2003-07-25

申请人： Kazumasa Kodama ,  Yutaka Mori ,  Junji Kawamuro ,  Takahiro Kojo ,  Masatoshi Nakatsu

发明人： Kazumasa Kodama ,  Yutaka Mori ,  Junji Kawamuro ,  Takahiro Kojo ,  Masatoshi Nakatsu

IPC分类号： B62D6/00 ,  B62D5/00 ,  B62D5/04 ,  B62D101/00 ,  B62D113/00 ,  H02P6/08 ,  H02P6/16

CPC分类号： B62D5/008 ,  B62D5/046

摘要： A PWM control includes a first PWM control and a second PWM control. In the first PWM control, a first power supply terminal of a first coil is kept non-switched under being connected to a first pole of a direct current power source, and a second power supply terminal of a second coil is capable of being switched under being connected to a second pole of the direct current power source. The second PWM control is performed by switching a first connected condition and a second connected condition by turns. The first connected condition is established with the first power supply terminal connected to the first pole and the second power supply terminal connected to the second pole. The second connected condition is established with the first power supply terminal being connected to the second pole and the second power supply terminal being connected to the first pole.

摘要翻译： PWM控制包括第一PWM控制和第二PWM控制。 在第一PWM控制中，第一线圈的第一电源端子在与直流电源的第一极连接的状态下保持不切换，并且第二线圈的第二电源端子能够被切换 连接到直流电源的第二极。 通过轮流切换第一连接状态和第二连接状态来执行第二PWM控制。 第一连接状态是与连接到第一极的第一电源端子和连接到第二极的第二电源端子建立的。 建立第二连接状态，第一电源端子连接到第二极点，第二电源端子连接到第一极点。

公开(公告)号：US20050023072A1

公开(公告)日：2005-02-03

申请号：US10626626

申请日：2003-07-25

申请人： Kazumasa Kodama ,  Junji Kawamuro ,  Takahiro Kojo ,  Masatoshi Nakatsu ,  Masahiro Miyata

发明人： Kazumasa Kodama ,  Junji Kawamuro ,  Takahiro Kojo ,  Masatoshi Nakatsu ,  Masahiro Miyata

IPC分类号： B62D6/00 ,  B62D5/00 ,  B62D5/04 ,  B62D15/02 ,  B62D101/00 ,  B62D113/00 ,  B62D137/00

CPC分类号： B62D15/021 ,  B62D5/008

摘要： A drive controlling means includes a final angle position memorizing means for memorizing a final angle position at a time of termination of the vehicle driving operation, an input complete data memorizing means capable of switching the memory content between a first memory condition and a second memory condition. The first memory condition indicates completeness of writing of the final angle position in the final angle position memorizing means. The second memory condition indicates failure in writing the final angle position therein. The input complete data memorizing means is capable of maintaining the memory content even when the vehicle is stationary.

摘要翻译： 驱动控制装置包括最终角度位置存储装置，用于在车辆驾驶操作结束时存储最终角度位置;输入完成数据存储装置，其能够在第一存储器条件和第二存储器条件之间切换存储​​器内容 。 第一存储条件指示在最终角位置存储装置中写入最终角位置的完整性。 第二存储器条件指示在其中书写最终角位置时失败。 输入完成数据存储装置即使在车辆静止时也能够保持存储器内容。