公开(公告)号：US06701235B2

公开(公告)日：2004-03-02

申请号：US09941844

申请日：2001-08-30

申请人： Masaaki Uchiyama ,  Toru Uchino ,  Nobuyuki Ichimaru

发明人： Masaaki Uchiyama ,  Toru Uchino ,  Nobuyuki Ichimaru

IPC分类号： B60G17015

CPC分类号： B60G17/01908 ,  B60G17/015 ,  B60G17/0165 ,  B60G17/06 ,  B60G2400/102 ,  B60G2400/821 ,  B60G2500/10 ,  Y10S180/902

摘要： In a suspension control system, a controller previously stores damping force maps (an ordinary road map, a rough road map, and an extremely rough road map) corresponding to road surface conditions (an ordinary road, a rough road, and an extremely rough road) defined by frequency and amplitude of vertical acceleration. The frequency and amplitude of the vertical acceleration are detected, and a damping force map (the ordinary road map, the rough road map, or the extremely rough road map) corresponding to the detected information is selected. Damping force control is effected on the basis of the selected damping force map. Selection of a damping force map according to the frequency and amplitude of the vertical acceleration is also made when a change in the vertical acceleration, i.e. a change in piston speed, is predicted during running on an ordinary road, a rough road or an extremely rough road.

摘要翻译： 在悬架控制系统中，控制器预先存储对应于路面条件（普通道路，粗路和非常粗糙的道路）的阻尼力图（普通路线图，粗糙路线图和极其粗糙的路线图） ）由垂直加速度的频率和幅度定义。 检测垂直加速度的频率和幅度，并且选择与检测到的信息相对应的阻尼力图（普通路线图，粗糙路线图或极其粗略的路线图）。 基于选择的阻尼力图来实现阻尼力控制。 当在普通道路，粗糙路面或非常粗糙的行驶中预测垂直加速度的变化（即，活塞速度的变化）时，根据垂直加速度的频率和振幅来选择阻尼力图 路。

公开(公告)号：US06176494B1

公开(公告)日：2001-01-23

申请号：US09220687

申请日：1998-12-23

申请人： Nobuyuki Ichimaru ,  Masaaki Uchiyama

发明人： Nobuyuki Ichimaru ,  Masaaki Uchiyama

IPC分类号： B60G1702

CPC分类号： B60G17/0165 ,  B60G17/08 ,  B60G2400/102 ,  B60G2400/204 ,  B60G2400/82 ,  B60G2400/821 ,  B60G2400/91 ,  B60G2500/10 ,  B60G2600/1877 ,  B60G2800/162 ,  B60G2800/702

摘要： When a road surface is judged to be undulating and rough, a parameter for a bad road to attain “soft” damping force characteristics is set with priority to setting of a parameter for an undulating road to attain “hard” damping force characteristics. Consequently, “soft” damping force characteristics are obtained to improve the ride quality. This order of the priority is adopted especially when a vehicle speed is low. When the vehicle speed is high, the order of the priority is reversed.

摘要翻译： 当路面被判断为波动粗糙时，为了获得“硬”阻尼力特性，优先设定实现“软”阻尼力特性的不良道路的参数，优先设定起伏路面的参数。 因此，获得“软”阻尼力特性以改善乘坐质量。 当车速低时，采用优先顺序。 当车速高时，优先顺序相反。

公开(公告)号：US6058340A

公开(公告)日：2000-05-02

申请号：US361554

申请日：1994-12-22

申请人： Masaaki Uchiyama ,  Taro Uyama ,  Yoshiko Matsumura ,  Nobuyuki Ichimaru

发明人： Masaaki Uchiyama ,  Taro Uyama ,  Yoshiko Matsumura ,  Nobuyuki Ichimaru

IPC分类号： B60G17/0165 ,  B60G17/00

CPC分类号： B60G17/0165 ,  B60G2400/10 ,  B60G2400/206 ,  B60G2400/82 ,  B60G2500/10 ,  B60G2600/02 ,  B60G2800/162 ,  B60G2800/916

摘要： A suspension control apparatus includes a variable damping coefficient type shock absorber disposed between sprung mass and unsprung mass of a vehicle and an actuator for setting and adjusting a damping coefficient of the variable damping coefficient type shock absorber on the basis of a control signal. An upward and downward absolute velocity detector for detecting an upward absolute velocity and a downward absolute velocity of the vehicle is provided. A control unit changes a signal from the upward and downward absolute velocity detector in accordance with a running condition of the vehicle to obtain a control target signal. A control signal generator outputs the control signal for the actuator on the basis of the control target signal from the control unit. A signal representative of the roughness of a road surface on which the vehicle is running is generated and a feature of the control unit is adjusted for changing the control signal on the basis of the signal representative of the road surface roughness.

摘要翻译： 悬架控制装置包括设置在车辆的簧上质量和非簧载质量之间的可变阻尼系数型减震器和用于根据控制信号设定和调节可变阻尼系数型减震器的阻尼系数的致动器。 提供了用于检测车辆的向上绝对速度和向下绝对速度的上下绝对速度检测器。 控制单元根据车辆的行驶状态改变来自上下绝对速度检测器的信号，以获得控制目标信号。 控制信号发生器基于来自控制单元的控制目标信号输出用于致动器的控制信号。 产生代表车辆行驶的路面的粗糙度的信号，并且根据表示路面粗糙度的信号来调整控制单元的特征以改变控制信号。

公开(公告)号：US06412788B1

公开(公告)日：2002-07-02

申请号：US09538896

申请日：2000-03-30

申请人： Nobuyuki Ichimaru

发明人： Nobuyuki Ichimaru

IPC分类号： B60G17015

CPC分类号： B60G17/0165 ,  B60G2400/102 ,  B60G2400/821 ,  B60G2500/10 ,  B60G2600/02 ,  B60G2600/184 ,  B60G2600/1877 ,  B60G2800/162 ,  B60G2800/916

摘要： A suspension control system includes a shock absorber adapted to be mounted between a vehicle body and a wheel axle and having a variable damping force, an actuator operatively connected to the shock absorber and adapted to adjust the damping force developed by the shock absorber, an accelerometer for detecting terrain conditions and outputting a corresponding terrain condition signal, and a controller including a detector for determining terrain conditions in response to the frequency of the terrain condition signal and adapted to control the actuator in response to the terrain conditions as determined. The controller is operable to increase the damping force by a predetermined amount over a predetermined period of time when the accelerometer determines that the terrain includes a bump.

摘要翻译： 一种悬架控制系统，包括适于安装在车体和轮轴之间并具有可变阻尼力的减震器，可操作地连接到减震器的致动器，适于调节由减震器产生的阻尼力，加速度计 用于检测地形条件并输出对应的地形条件信号;以及控制器，包括用于响应于地形条件信号的频率来确定地形条件的检测器，并且适于响应于所确定的地形状况来控制致动器。 控制器可操作以在加速度计确定地形包括凸起的预定时间段内将阻尼力增加预定量。

公开(公告)号：US06290034B1

公开(公告)日：2001-09-18

申请号：US09352207

申请日：1999-07-13

申请人： Nobuyuki Ichimaru

发明人： Nobuyuki Ichimaru

IPC分类号： F16F946

CPC分类号： B60G17/015 ,  B60G2400/102 ,  B60G2500/10 ,  B60G2800/0192

摘要： The disclosed suspension control system includes actuators for adjusting damping forces of front and rear variable-damping force shock absorbers. Also provided are front and rear vertical acceleration detectors. Usual control for the actuators are performed on the basis of the vertical accelerations detected by the vertical acceleration detectors. A control signal adjustor is provided to adjust a control signal to be sent to the actuator for the rear shock absorber such that the damping force of the rear shock absorber is reduced when the vertical acceleration detected by the front vertical acceleration detector or a rate of change thereof exceeds a preset reference value.

摘要翻译： 所公开的悬架控制系统包括用于调节前后可变阻尼力减震器的阻尼力的致动器。 还提供前后垂直加速度检测器。 基于由垂直加速度检测器检测的垂直加速度执行致动器的通常控制。 提供控制信号调节器以调节要发送到后减震器的致动器的控制信号，使得当由前垂直加速度检测器检测到的垂直加速度或变化率时减小后减震器的阻尼力 超过预设的参考值。

公开(公告)号：US6067490A

公开(公告)日：2000-05-23

申请号：US30503

申请日：1998-02-25

申请人： Nobuyuki Ichimaru ,  Tohma Yamaguchi

发明人： Nobuyuki Ichimaru ,  Tohma Yamaguchi

IPC分类号： B60G17/015 ,  B60G17/018 ,  F16K31/06 ,  B60G17/00

CPC分类号： B60G17/08 ,  B60G17/018 ,  F16F9/466 ,  F16K31/0606 ,  F16K31/0627 ,  F16K31/0693 ,  B60G2202/24 ,  B60G2204/62 ,  B60G2206/41 ,  B60G2400/102 ,  B60G2500/104 ,  B60G2500/11 ,  B60G2600/181 ,  B60G2600/26 ,  B60G2600/70

摘要： In the suspension control apparatus of the present invention utilizing a PWM type proportional solenoid valve, in which a current in a form such that a dithering current is superimposed on a target current is applied to a solenoid, when the average intensity of the applied current falls outside a predetermined range, a ratio between a time period during which the PWM signal having a decrease duty ratio is applied and a time period during which the PWM signal having an increase duty ratio is applied is changed so that an amplitude of the dithering current can be maintained at a predetermined level. Therefore, an undesirable increase in hysteresis with respect to a damping force can be suppressed, to thereby ensure good reponsivity for controlling a damping force, regardless of the average intensity of the applied current.

摘要翻译： 在利用PWM型比例电磁阀的本发明的悬架控制装置中，其中以螺线管施加将抖动电流叠加在目标电流上的形式的电流，当施加电流的平均强度下降时 在预定范围之外，施加具有降低占空比的PWM信号的时间段和施加具有增加的占空比的PWM信号的时间段之间的比率被改变，使得抖动电流的幅度可以 维持在预定水平。 因此，可以抑制相对于阻尼力的滞后的不期望的增加，从而确保用于控制阻尼力的良好的响应性，而不管所施加的电流的平均强度。

公开(公告)号：US6016454A

公开(公告)日：2000-01-18

申请号：US910224

申请日：1997-08-13

申请人： Nobuyuki Ichimaru

发明人： Nobuyuki Ichimaru

IPC分类号： B60G17/015 ,  G06F7/76 ,  G06G7/70

CPC分类号： B60G17/015 ,  B60G2500/10

摘要： In the suspension control apparatus of the present invention, a CPU determines a desired damping force, based on an acceleration of a car body in a vertical direction, which is detected by an acceleration sensor, and also determines a PWM duty ratio corresponding to an intensity of a target current (an average intensity of the applied current) required for generating the desired damping force. Further, the CPU detects a voltage provided by a battery and adjusts the PWM duty ratio, based on the detected voltage value, so as to maintain a dither amplitude at a predetermined level. A PWM signal having the adjusted duty ratio is outputted to a transistor, to thereby apply a current which is obtained by superimposing a dither on the target current. By this arrangement, the dither amplitude can be maintained at a predetermined level, even when the voltage value changes, so that an undesirable increase in hysteresis with respect to a damping force can be avoided and pronounced noise and vibration of a proportional solenoid valve can be suppressed.

摘要翻译： 在本发明的悬架控制装置中，CPU基于由加速度传感器检测到的垂直方向上的车体的加速度来确定期望的阻尼力，并且还确定对应于强度的PWM占空比 产生所需阻尼力所需的目标电流（施加电流的平均强度）。 此外，CPU检测由电池提供的电压，并且基于检测到的电压值调整PWM占空比，以便将抖动幅度保持在预定水平。 具有调整占空比的PWM信号被输出到晶体管，从而施加通过在目标电流上叠加抖动而获得的电流。 通过这种布置，即使当电压值发生变化时，抖动振幅也可以保持在预定的水平，从而可以避免相对于阻尼力的不期望的迟滞增加，并且比例电磁阀的噪声和振动可以是显着的 被压制

公开(公告)号：US5944153A

公开(公告)日：1999-08-31

申请号：US939817

申请日：1997-09-29

申请人： Nobuyuki Ichimaru

发明人： Nobuyuki Ichimaru

IPC分类号： B60G17/015 ,  F16F9/46

CPC分类号： B60G17/015 ,  B60G2400/102 ,  B60G2500/10 ,  B60G2800/0192

摘要： The disclosed suspension control system includes actuators for adjusting damping forces of front and rear variable-damping force shock absorbers. Also provided are front and rear vertical acceleration detecting devices. Usual control for the actuators are performed on the basis of the vertical accelerations detected by the vertical acceleration detecting devices. Control signal adjusting means is provided to adjust a control signal to be sent to the actuator for the rear shock absorber such that the damping force of the rear shock absorber is reduced when the vertical acceleration detected by the front vertical acceleration detecting device or a rate of change thereof exceeds a preset reference value.

摘要翻译： 所公开的悬架控制系统包括用于调节前后可变阻尼力减震器的阻尼力的致动器。 还提供了前后垂直加速度检测装置。 基于由垂直加速度检测装置检测到的垂直加速度执行致动器的通常控制。 提供控制信号调节装置，以调节要发送到后减震器的致动器的控制信号，使得当由前垂直加速度检测装置检测到的垂直加速度时后减震器的阻尼力减小， 其变化超过预设的参考值。

公开(公告)号：US06427986B1

公开(公告)日：2002-08-06

申请号：US09538531

申请日：2000-03-30

申请人： Hiroshi Sakai ,  Akinori Kurusu ,  Nobuyuki Ichimaru ,  Takao Kohara ,  Satoshi Ohsawa

发明人： Hiroshi Sakai ,  Akinori Kurusu ,  Nobuyuki Ichimaru ,  Takao Kohara ,  Satoshi Ohsawa

IPC分类号： F16F914

CPC分类号： F16F9/062 ,  B60G15/14 ,  B60G17/0416 ,  B60G17/08 ,  B60G2202/314 ,  B60G2500/112 ,  F16F9/325 ,  F16F9/342 ,  F16F9/5123

摘要： An air chamber (53) of a damping force adjusting mechanism (49) disposed in a hydraulic shock absorber (3) of a damping force adjusting type communicates with an air chamber (7) of an air spring through a tubular path (57). A free piston (51) is transferred in accordance with the pressure of the air chamber and a spool (46) is transferred to shift a damping force. The damping force presents a soft characteristic both on the extending side and on the retracting side in a usual status, presents a hard characteristic on the extending side and a soft characteristic on the retracting side when the pressure of the air chamber is high, and presents a soft characteristic on the extending side and a hard characteristic on the retracting side when the pressure of the air chamber (7) is low. The damping force can be obtained, which approximates the damping force control on the basis of a so-called sky-hook theory. Therefore, the air suspension apparatus can alleviate the input from the axle side and improve a riding comfort and stability in operability by controlling the vibration on the vehicle body side.

摘要翻译： 设置在阻尼力调节型的液压缓冲器（3）中的阻尼力调节机构（49）的空气室（53）通过管状路径（57）与空气弹簧的空气室（7）连通。 自由活塞（51）根据空气室的压力传递，并且转子（46）转动阻尼力。 阻尼力在通常状态下在延伸侧和收缩侧呈现柔软的特性，当空气室的压力高时，在延伸侧呈现硬的特性和在回缩侧的柔软特性，并且呈现 当空气室（7）的压力低时，在延伸侧具有软特性和在回缩侧的硬特性。 可以获得阻尼力，其基于所谓的天钩理论近似阻尼力控制。 因此，空气悬架装置可以通过控制车体侧的振动来减轻从车轴侧的输入，提高乘坐舒适性和操作性的稳定性。

公开(公告)号：US06182805B2

公开(公告)日：2001-02-06

申请号：US09339832

申请日：1999-06-25

申请人： Akira Kashiwagi ,  Nobuyuki Ichimaru ,  Akinori Kurusu

发明人： Akira Kashiwagi ,  Nobuyuki Ichimaru ,  Akinori Kurusu

IPC分类号： F16F934

CPC分类号： F16F9/325 ,  F16F9/348 ,  F16F9/466

摘要： The flow of a hydraulic fluid caused by sliding movement of a piston is controlled through a sub-disk valve, a main disk valve and a disk valve to generate damping force. A coil is energized to urge a plunger in the valve closing direction against spring force from a spring, thereby adjusting the relief pressure of the disk valve and thus controlling the damping force. The pressure in a back-pressure chamber varies according to the relief pressure of the disk valve. Thus, the valve opening pressure of the main disk valve is also adjusted. An abrupt input is absorbed by relieving the pressure from the back-pressure chamber by deflection of the disk valve. Because “soft” damping force characteristics, which are often used, are maintained with a small electric current, the power consumption can be reduced. When there is a failure, the spring causes the small-diameter portion of the plunger to close ports, thereby switching the damping force to “hard” side and thus ensuring the steering stability.

摘要翻译： 由活塞的滑动运动引起的液压流体的流动通过副盘阀，主盘阀和盘阀来控制，以产生阻尼力。 线圈被通电以抵抗来自弹簧的弹簧力在阀关闭方向上推动柱塞，从而调节盘阀的释放压力，从而控制阻尼力。 背压室中的压力根据盘阀的溢流压力而变化。 因此，主盘阀的开阀压力也被调整。 通过盘阀的偏转减轻来自背压室的压力来吸收突然的输入。 由于经常使用的“软”阻尼力特性以小电流保持，所以能够降低功耗。 当发生故障时，弹簧使柱塞的小直径部分关闭端口，从而将阻尼力切换到“硬”侧，从而确保操纵稳定性。