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：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：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：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：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：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：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：US4751649A

公开(公告)日：1988-06-14

申请号：US867921

申请日：1986-05-29

申请人： Kunihiko Eto ,  Yutaka Mori ,  Akihiro Oono ,  Sadamu Kato ,  Hideo Mizoguchi

发明人： Kunihiko Eto ,  Yutaka Mori ,  Akihiro Oono ,  Sadamu Kato ,  Hideo Mizoguchi

IPC分类号： B60G17/00 ,  B60G17/015 ,  B60G17/016 ,  B62D6/00 ,  B62D101/00 ,  B62D113/00 ,  G01C21/00 ,  G08G1/00 ,  B62D5/06 ,  B62D6/02

CPC分类号： B60G17/016 ,  B62D6/00

摘要： A motor vehicle is provided with a driving status discrimination device, which includes a steering angle sensor for detecting the rotational angle of a steering wheel and a microcomputer for reading and processing the steering angle signal each time the vehicle runs a predetermined distance. The microcomputer identifies one of steering angular ranges of intervals to which each detected steering angle belongs so as to record the frequency at which the steering wheel was turned to each steering angular interval. The microcomputer modifies the frequency for each steering angle interval with a weighting coefficient determined for the steering angular interval and then, calculates a total or integrated value of the modified frequencies for the steering angular intervals. Further, the microcomputer discriminates town street driving from mountain road driving based upon the integrated value so that the assisting power generated by a power steering mechanism of the motor vehicle can be controlled based upon the result of such discrimination.

摘要翻译： 机动车辆设置有驱动状态识别装置，其包括用于检测方向盘的旋转角度的转向角传感器和每当车辆行驶预定距离时用于读取和处理转向角信号的微型计算机。 微型计算机识别每个检测到的转向角所属的间隔的转向角范围，以将方向盘转向的频率记录到每个转向角间隔。 微型计算机利用为转向角间隔确定的加权系数来修改每个转向角间隔的频率，然后计算转向角间隔的修正频率的总或综合值。 此外，微型计算机基于积分值来区分城市街道驾驶与山路驾驶，从而可以基于这种歧视的结果来控制由汽车的动力转向机构产生的辅助动力。

公开(公告)号：US4246577A

公开(公告)日：1981-01-20

申请号：US935779

申请日：1978-08-22

申请人： Yoshio Shima ,  Kyosuke Haga ,  Kunihiko Eto ,  Tetsuro Yamakage

发明人： Yoshio Shima ,  Kyosuke Haga ,  Kunihiko Eto ,  Tetsuro Yamakage

IPC分类号： B23B47/24 ,  B23B49/00 ,  G05B19/4065 ,  G01B11/14 ,  G08B21/00

CPC分类号： B23B49/001 ,  B23Q17/2241 ,  G05B19/4065 ,  G05B2219/37245 ,  G05B2219/45129

摘要： A tool breakage detecting apparatus is provided with a preset counter to be preset with a predetermined value. The content of the counter is subtracted one by one each time either one of a tool and a workpiece to be machined is moved a unit distance toward the other thereof from a cutting movement start position being spaced a predetermined distance from the other thereof. If the content of the counter is reduced an amount corresponding to a distance larger than the predetermined distance, tool breakage is detected.

摘要翻译： 工具破损检测装置设置有预设有预定值的预设计数器。 每当工具和要加工的工件中的任一个从距离另一个间隔预定距离的切割移动开始位置朝向另一个移动单位距离时，逐个减去计数器的内容。 如果计数器的内容减少了对应于大于预定距离的距离的量，则检测到刀具断裂。

公开(公告)号：US4662466A

公开(公告)日：1987-05-05

申请号：US777787

申请日：1985-09-17

申请人： Kunihiko Eto ,  Akihiro Ohno ,  Yutaka Mori

发明人： Kunihiko Eto ,  Akihiro Ohno ,  Yutaka Mori

IPC分类号： B62D6/00 ,  B62D6/02 ,  B62D101/00 ,  B62D113/00 ,  B62D137/00 ,  B62D5/06

CPC分类号： B62D6/00 ,  B62D6/02

摘要： An electronically controlled power steering apparatus wherein the steering force generated by a power cylinder (15) is controlled by a microcomputer (54). Detection signals from a vehicle speed sensor (50) and a steering angle sensor (51) are input to the microcomputer (54), which thus, reads out from a memory (60) stored control electric currents corresponding to detection signals in order to output the appropriate control electric currents. A solenoid valve (20) for controlling the communication between left and right chambers of the power cylinder (15) and another solenoid valve (30) for controlling the supply of pressurized fluid from a pump (16) to a servovalve (14) are driven in response to the control electric currents from the microcomputer (54). When the vehicle runs a predetermined distance or a predetermined time period after the supply of electric current, the microcomputer (54) decreases the control electric currents charged to the solenoid valves (20) and (30). Accordingly, even in a vehicle of the type wherein a neutral position of the steering (10 ) cannot be precisely detected unless the vehicle runs the predetermined distance or the predetermined time period after the supply of electric power, any uncomfortable or strange "feel" by the driver can be avoided.

摘要翻译： PCT No.PCT / JP85 / 00278 Sec。 371日期：1985年9月17日 102（e）1985年9月17日PCT 1985年5月21日提交PCT。一种电动控制动力转向装置，其中由动力缸（15）产生的转向力由微型计算机（54）控制。 来自车速传感器（50）和转向角传感器（51）的检测信号被输入到微计算机（54），从而从存储器（60）读出存储与检测信号对应的控制电流，以输出 适当的控制电流。 用于控制动力缸（15）的左右室与另一电磁阀（30）之间的连通的电磁阀（20）用于控制从泵（16）到伺服阀（14）的加压流体的供给， 响应于来自微计算机（54）的控制电流。 当车辆在电力供应之后经过预定距离或预定时间段时，微型计算机（54）减小了加到电磁阀（20）和（30）的控制电流。 因此，即使在没有精确地检测到转向（10）的中立位置的车辆中，除非车辆在电力供应之后经过预定距离或预定时间段，否则任何不舒适或奇怪的“感觉”由 司机可以避免。