公开(公告)号：US06508102B1

公开(公告)日：2003-01-21

申请号：US09383393

申请日：1999-08-26

申请人： Donald L. Margolis ,  Cornelis Jen Belltawn ,  Alan Yasuji Arai

发明人： Donald L. Margolis ,  Cornelis Jen Belltawn ,  Alan Yasuji Arai

IPC分类号： G01M1702

CPC分类号： B60T8/172 ,  B60T2210/12

摘要： An improved estimator is provided for road/tire friction. The friction estimator provides near-real-time friction estimation, even while the car is accelerating, braking or turning. It is desirable to have an instantaneous and continuous estimate of the road/tire friction, but an estimate that occurs over several wheel rotations is more realistic. The estimate relies on easily measured signals such as yaw rate, lateral acceleration, wheel speed, etc. The estimate can be used to give the driver or a closed-loop controller an advanced warning when the tire force limit is being approached.

摘要翻译： 为道路/轮胎摩擦提供了改进的估计器。 摩擦估计器提供近乎实时的摩擦估计，即使在汽车正在加速，制动或转弯时。 期望具有道路/轮胎摩擦力的瞬时和连续的估计，但是在几轮转动时发生的估计更为现实。 该估计依赖于容易测量的信号，例如横摆率，横向加速度，车轮速度等。估计可用于在逼近轮胎力极限时给予驾驶员或闭环控制器高级警告。

公开(公告)号：US4821191A

公开(公告)日：1989-04-11

申请号：US921450

申请日：1986-10-22

申请人： Hiroyuki Ikemoto ,  Yasuji Arai ,  Osamu Yasuike ,  Nobutaka Oowa ,  Shunichi Doi

发明人： Hiroyuki Ikemoto ,  Yasuji Arai ,  Osamu Yasuike ,  Nobutaka Oowa ,  Shunichi Doi

IPC分类号： B60G17/00 ,  B60G17/015 ,  B60G17/016

CPC分类号： B60G17/016 ,  B60G2202/154 ,  B60G2202/413 ,  B60G2202/414 ,  B60G2400/204 ,  B60G2400/252 ,  B60G2400/41 ,  B60G2400/44 ,  B60G2400/51 ,  B60G2400/60 ,  B60G2400/61 ,  B60G2500/30 ,  B60G2600/02 ,  B60G2600/182 ,  B60G2600/70 ,  B60G2800/16 ,  B60G2800/204 ,  B60G2800/914

摘要： In this vehicle height adjustment system, a plurality of actuator assemblies are provided, one corresponding to each one of the vehicle wheels and resiliently suspending it from the vehicle body. These actuator assemblies have pressure chambers, and each is adapted to increase or decrease the vehicle height at a location corresponding to its corresponding wheel as respective results of supplying or discharging of working fluid to or from its pressure chamber. Working fluid supply/discharge means are provided corresponding to the actuator assemblies and supply and discharge working fluid to and from their pressure chambers. Wheel loading detection means are provided for sensing parameters representative of the loadings imposed by the vehicle body on the wheels, and vehicle height detection means are provided for sensing the heights of the vehicle above the wheels. A means for computing and control controls the working fluid supply/discharge means, based on the deviations of the actual wheel heights from standard wheel heights, and carries out control adjustment of the actual wheel heights to the standard wheel heights by, at least when the vehicle speed is below a determinate value, carrying out a correction to the adjustment control of the working fluid supply/discharge means, based upon the deviations of the actual wheel loadings from standard wheel loadings, by an amount appropriate substantially to eliminate the loading deviations.

摘要翻译： 在该车辆高度调节系统中，设置有多个致动器组件，一个对应于车辆车轮中的每一个并且将其从车身弹性悬挂。 这些致动器组件具有压力室，并且每个都适于在对应于其对应的车轮的位置处增加或减少车辆高度，作为将工作流体供给或排出到其压力室的相应结果。 工作流体供应/排出装置相应于致动器组件设置，并且将工作流体从其压力室供给和排出工作流体。 提供车轮负载检测装置，用于感测代表车体对车轮施加的载荷的参数，并且提供车辆高度检测装置，用于感测车轮上方车辆的高度。 基于实际车轮高度与标准车轮高度的偏差，计算和控制控制工作流体供应/排出装置的装置，并且至少当至少在 车速低于确定值，基于实际车轮负载与标准车轮负载的偏差，对工作流体供给/排出装置的调节控制进行校正，基本上消除负载偏差的量。

公开(公告)号：US4821188A

公开(公告)日：1989-04-11

申请号：US921451

申请日：1986-10-22

申请人： Hiroyuki Ikemoto ,  Nobutaka Oowa ,  Yasuji Arai ,  Osamu Yasuike ,  Shunichi Doi

发明人： Hiroyuki Ikemoto ,  Nobutaka Oowa ,  Yasuji Arai ,  Osamu Yasuike ,  Shunichi Doi

IPC分类号： B60G17/00 ,  B60G17/015 ,  B60G17/016 ,  B60G17/10

CPC分类号： B60G17/0162

摘要： In this vehicle height adjustment system, a plurality of actuator assemblies are provided, one corresponding to each one of the vehicle wheels and resiliently suspending it from the vehicle body. These actuator assemblies have pressure chambers, and each is adapted to increase or decrease the vehicle height at a location corresponding to its corresponding wheel as respective results of supplying or discharging of working fluid to or from its pressure chamber. Working fluid supply/discharge means are provided corresponding to the actuator assemblies and supply and discharge working fluid to and from their pressure chambers. Vehicle height detection means are provided for sensing the heights of the vehicle above the wheels. A means detects the rate of change of the steering angle of the vehicle. And a means for computing and control controls the working fluid supply/discharge means, based on the deviations of the actual wheel heights from standard wheel heights, and carries out control adjustment of the actual wheel heights to the standard wheel heights, by performing a prediction calculation of the fluctuations in wheel heights caused by vehicle rolling from the rate of change of steering angle as detected by the means for detecting the rate of change of steering angle and from the vehicle speed as detected by the vehicle speed detecting means, and by carrying out a correction to the adjustment control of the working fluid supplying and discharging means, based upon the calculation result, by an amount appropriate substantially to eliminate the wheel height fluctuations.

摘要翻译： 在该车辆高度调节系统中，设置有多个致动器组件，一个对应于车辆车轮中的每一个并且将其从车身弹性悬挂。 这些致动器组件具有压力室，并且每个都适于在对应于其对应的车轮的位置处增加或减少车辆高度，作为将工作流体供给或排出到其压力室的相应结果。 工作流体供应/排出装置相应于致动器组件设置，并且将工作流体从其压力室供给和排出工作流体。 提供车辆高度检测装置，用于感测车轮上方车辆的高度。 一种装置检测车辆转向角的变化率。 并且，基于实际车轮高度与标准车轮高度的偏差，计算和控制的装置控制工作流体供给/排出装置，并且通过执行预测来执行实际车轮高度对标准车轮高度的控制调整 通过由车速检测装置检测到的用于检测转向角的变化率和车速的装置检测到的转向角变化率，计算车辆滚动导致的车轮高度的波动， 基于计算结果，对基本上消除车轮高度波动的量进行基于工作流体供给和排出装置的调节控制的校正。

公开(公告)号：US4809176A

公开(公告)日：1989-02-28

申请号：US921468

申请日：1986-10-22

申请人： Nobutaka Oowa ,  Yasuji Arai ,  Osamu Yasuike ,  Hiroyuki Ikemoto ,  Shunichi Doi

发明人： Nobutaka Oowa ,  Yasuji Arai ,  Osamu Yasuike ,  Hiroyuki Ikemoto ,  Shunichi Doi

IPC分类号： B60G17/016 ,  B60G17/00

CPC分类号： B60G17/0162 ,  Y10S280/01

摘要： In this system for vehicle roll control, a plurality of duty radio controlled actuator assemblies are provided, one corresponding to each one of the vehicle wheels, and resiliently suspended from the vehicle body. These actuator assemblies have pressure chambers, and each is adapted to increase or decrease the vehicle height at a location corresponding to its corresponding vehicle wheel as a result of the supplying or discharging of working fluid to or from its pressure chamber. Working fluid supplying and discharging means supply working fluid to and discharge working fluid from the pressure chambers of the actuator assemblies. The system further includes means for sensing the road speed of the vehicle, and means for sensing the steering angle of the vehicle. Vehicle height detection means are also provided for sensing the heights of the vehicle above the vehicle wheels. A means for computing and control calculates the deviations of the actual detected vehicle body heights from standard vehicle body heights; when a certain condition is satisfied, it controls the working fluid supplying and discharging means according to a first duty ratio according to the deviations of the actual vehicle body heights, so as to maintain the deviations of the actual vehicle body heights within predetermined ranges; and then it controls the working fluid supplying and discharging means in the reverse order according to a second duty ratio.

摘要翻译： 在这种车辆侧倾控制系统中，设有多个负责无线电控制的致动器组件，一个对应于车轮中的每一个，并且弹性地悬挂在车身上。 这些致动器组件具有压力室，并且每个都适于在工作流体向其压力室供应或排出工作流体的结果时，增加或减少与其对应的车轮相对应的位置处的车辆高度。 工作流体供应和排放装置向工作流体提供工作流体并从致动器组件的压力室排出工作流体。 该系统还包括用于感测车辆的道路速度的装置和用于感测车辆的转向角的装置。 车辆高度检测装置还用于感测车辆上方车辆的高度。 计算和控制的手段计算实际检测到的车身高度与标准车身高度的偏差; 当满足一定条件时，根据实际车身高度的偏差，根据第一占空比控制工作流体供给和排出装置，以将实际车身高度的偏差保持在预定范围内; 然后根据第二占空比以相反的顺序控制工作流体供给和排出装置。

公开(公告)号：US4803627A

公开(公告)日：1989-02-07

申请号：US17592

申请日：1987-02-24

申请人： Osamu Yasuike ,  Yasuji Arai ,  Hiroyuki Ikemoto ,  Nobutaka Owa ,  Shunichi Doi

发明人： Osamu Yasuike ,  Yasuji Arai ,  Hiroyuki Ikemoto ,  Nobutaka Owa ,  Shunichi Doi

IPC分类号： B60G17/00 ,  B60G17/015 ,  B60G17/016 ,  B60G21/06

CPC分类号： B60G17/0162

摘要： In this system for vehicle roll control, a plurality of actuator assemblies are provided, one corresponding to each one of the vehicle wheels and resiliently suspending it from the vehicle body. Each of these actuator assemblies is adapted to increase or decrease the vehicle height at a location corresponding to its corresponding vehicle wheel as results of control signals being supplied to it. A plurality of control means are provided corresponding to the actuator assemblies and serve to supply control signals to them. A vehicle speed detecting means senses the road speed of the vehicle, a steering angle detecting means senses the steering angle of the vehicle, and a lateral acceleration detecting means detects the lateral acceleration of the vehicle body. A means for computing and control predictingly computes the roll angle of the vehicle body from the vehicle speed sensed by the vehicle speed detecting means and the steering angle sensed by the steering angle detecting means, and controls the plurality of actuator assemblies, via the plurality of control means, in accordance with the computed roll angle, so as to reduce the rolling of the vehicle body to keep the vehicle body rolling within a determinate range. This computing and control means is further adapted to compare the direction of vehicle steering as detected by the steering angle detecting means with the direction of lateral acceleration of the vehicle body as detected by the lateral acceleration detecting means, and does not effect such controlling of the plurality of actuator assemblies, when the direction of vehicle steering is opposite to the direction of lateral acceleration of the vehicle body.

摘要翻译： 在该车辆侧倾控制系统中，设置有多个致动器组件，一个对应于车轮中的每一个并且使其从车体弹性悬挂。 这些致动器组件中的每一个适于在对应于其对应的车轮的位置处增加或减少车辆高度，作为向其提供的控制信号的结果。 对应于致动器组件提供多个控制装置，并用于向它们提供控制信号。 车速检测装置感测车辆的道路速度，转向角检测装置感测车辆的转向角，横向加速度检测装置检测车身的横向加速度。 用于计算和控制的装置根据车速检测装置感测到的车速预测车身的侧倾角和由转向角检测装置检测到的转向角度，并且经由多个致动器组件 控制装置，根据计算出的滚动角度，以便减少车身的滚动，使车体滚动保持在确定的范围内。 该计算和控制装置还适于将由转向角检测装置检测到的车辆转向方向与由横向加速度检测装置检测到的车体横向加速度的方向进行比较，并且不影响 当车辆转向的方向与车身的横向加速度的方向相反时，多个致动器组件。