公开(公告)号：US5029660A

公开(公告)日：1991-07-09

申请号：US505749

申请日：1990-04-06

申请人： Joseph M. Raad ,  Geoffrey F. Bridges

发明人： Joseph M. Raad ,  Geoffrey F. Bridges

IPC分类号： B62D6/00

CPC分类号： B62D6/00

摘要： A feedback control method and system are provided to accurately control the steering assist level in a vehicle steering system. An electric actuator, such as a solenoid, operates a flow control valve that controls the flow of control fluid in a vehicle steering system in relation to driver and vehicle inputs such as vehicle speed and the angular position and velocity of a hand-wheel of the steering system. The flow of the control fluid is utilized by the steering system to provide a power assist steering force. A feedback signal based on the actual measured current of the solenoid is generated after a hardware filter filters the measured current. There is a time lag associated with the filtered feedback signal. A software filter filters an initial control signal which represents the desired steering assist level to maintain a similar time relationship between the feedback signal and the initial control signal. An error signal is generated by comparing the feedback signal and the filtered initial control signal. The initial control signal is then modified by the error signal to obtain a final control signal which compensates for varying system operating conditions.

摘要翻译： 提供反馈控制方法和系统以精确地控制车辆转向系统中的转向辅助水平。 诸如螺线管的电动致动器操作流量控制阀，该流量控制阀控制车辆转向系统中的控制流体相对于驾驶员和车辆输入的流量，所述驾驶员和车辆输入例如车辆速度以及手轮的角位置和速度 转向系统。 控制流体的流动由转向系统利用以提供动力辅助转向力。 在硬件滤波器对测量的电流进行滤波之后，产生基于螺线管的实际测量电流的反馈信号。 与滤波后的反馈信号相关联的时间滞后。 软件滤波器对表示所需转向辅助电平的初始控制信号进行滤波，以保持反馈信号和初始控制信号之间的类似的时间关系。 通过比较反馈信号和滤波的初始控制信号来产生误差信号。 然后通过误差信号修改初始控制信号，以获得补偿不同系统操作条件的最终控制信号。

公开(公告)号：US5593176A

公开(公告)日：1997-01-14

申请号：US357673

申请日：1994-12-16

申请人： Douglas C. Campbell ,  Gary J. Gloceri ,  Daniel M. McCoy ,  Thomas G. Reichenbach ,  Lenard J. Duchnowski ,  Jerome C. Ivan ,  Joseph M. Raad

发明人： Douglas C. Campbell ,  Gary J. Gloceri ,  Daniel M. McCoy ,  Thomas G. Reichenbach ,  Lenard J. Duchnowski ,  Jerome C. Ivan ,  Joseph M. Raad

IPC分类号： B60G11/26 ,  B60G17/0195

CPC分类号： B60G11/26 ,  B60G17/0195 ,  B60G2202/412 ,  B60G2202/413 ,  B60G2400/204 ,  B60G2400/80 ,  B60G2500/30 ,  B60G2600/02 ,  B60G2600/18 ,  B60G2600/20

摘要： In vehicles having drive wheel selections, accessed for example through a transfer case, drive wheel settings are used to determine a desired vehicle ride height at which the vehicle is maintained by a vehicle suspension control system. Preferably, both vehicle speed and transfer case setting are combined to determine the desired vehicle ride height. With two wheel drive selected, the desired vehicle ride height is set to a low ride height which provides the most aerodynamic airflow for the vehicle. However, if four wheel drive is selected, the speed is checked to determine the desired vehicle ride height. If four wheel drive (automatic four wheel drive) is selected, low ride height is still selected for speeds in excess of a first defined speed. For speeds at or below the first defined speed, a high ride height approximately 1 inch above the low ride height is set for the desired ride height. If four wheel drive low is selected, typically in contemplation of off-road operation, a higher still ride height or off-road ride height approximately 1 inch above high ride height is set for the desired ride height.

摘要翻译： 在具有驱动轮选择的车辆中，例如通过转移箱进入，驱动轮设置用于确定由车辆悬架控制系统维持车辆所需的车辆行驶高度。 优选地，组合车辆速度和转移箱设置以确定期望的车辆行驶高度。 选择两个轮驱动，所需的车辆行驶高度被设置为低的行驶高度，其为车辆提供最大的空气动力学气流。 但是，如果选择了四轮驱动，则检查速度以确定所需的车辆行驶高度。 如果选择四轮驱动（自动四轮驱动），则对于超过第一定义速度的速度，仍然选择低行驶高度。 对于等于或低于第一定义速度的速度，为了所需的行驶高度设置高于低行驶高度大约1英寸的高行驶高度。 如果四轮驱动低位被选择，通常在考虑越野操作时，为了期望的行驶高度设置高于高高度高度的高度高1或更高的行驶高度或越野行驶高度。

公开(公告)号：US5696678A

公开(公告)日：1997-12-09

申请号：US574484

申请日：1995-12-19

申请人： Joseph M. Raad ,  Steven J. Reimers ,  Ray Andrew Sackett ,  Ronald J. Collins

发明人： Joseph M. Raad ,  Steven J. Reimers ,  Ray Andrew Sackett ,  Ronald J. Collins

IPC分类号： B60G17/015 ,  B60G17/016 ,  B60G17/018 ,  B60G17/052

CPC分类号： B60G17/018 ,  B60G17/0155 ,  B60G17/016 ,  B60G2202/152 ,  B60G2202/412 ,  B60G2400/204 ,  B60G2400/252 ,  B60G2500/30 ,  B60G2600/02 ,  B60G2600/14 ,  B60G2800/20 ,  B60G2800/914

摘要： A method for preventing undesirable lowering of an air suspension system for a motor vehicle includes the steps of sensing vehicle speed of the motor vehicle, determining whether the sensed vehicle speed is equal to a predetermined speed, venting air from the air suspension system to lower a vehicle body of the motor vehicle if the sensed vehicle speed is equal to the predetermined speed, sensing height of corners of the vehicle body, calculating a height rate for the corners of the vehicle body based on the sensed height, determining whether a height rate of a corner of the vehicle body is greater than a predetermined rate, and disabling or halting venting of the air suspension system if the height rate of a corner of the vehicle body is greater than the predetermined rate.

摘要翻译： 用于防止机动车辆的空气悬架系统的不期望的降低的方法包括以下步骤：感测机动车辆的车辆速度，确定所感测的车辆速度是否等于预定速度，将空气从空气悬架系统排出以降低 如果感测的车速等于预定速度，则检测车体的角部的高度，基于感测到的高度来计算车身的角部的高度比，确定车身的高度 车体的角部大于规定的速度，如果车体的角部的高度比规定的速度大，则禁止或停止空气悬架系统的排气。

公开(公告)号：US5632503A

公开(公告)日：1997-05-27

申请号：US574483

申请日：1995-12-19

申请人： Joseph M. Raad ,  Steven J. Reimers ,  Ray A. Sackett ,  Ronald J. Collins ,  Christine L. Gordon

发明人： Joseph M. Raad ,  Steven J. Reimers ,  Ray A. Sackett ,  Ronald J. Collins ,  Christine L. Gordon

IPC分类号： B60G17/016 ,  B60G17/0195 ,  B62D6/00 ,  B60G11/26

CPC分类号： B60G17/0162 ,  B60G17/0195 ,  B62D6/00 ,  B60G2200/10 ,  B60G2400/204 ,  B60G2400/42 ,  B60G2500/10 ,  B60G2600/184 ,  B60G2600/20 ,  B60G2600/70 ,  B60G2800/24 ,  B60G2800/96

摘要： A method for allowing enhanced driver selection of suspension damping and steering efforts for a motor vehicle includes the steps of presenting to a driver of the motor vehicle a plurality of suspension damping modes and steering efforts modes for the motor vehicle, allowing the driver to select only predetermined combinations of the suspension damping modes and steering efforts modes, and adjusting the suspension damping and steering efforts of the motor vehicle based on the predetermined combination selected by the driver, and automatically adjusting the modes based on predetermined conditions.

摘要翻译： 一种用于允许增强驾驶员选择用于机动车辆的悬架阻尼和转向操作的方法包括以下步骤：向机动车辆的驾驶员呈现用于机动车辆的多个悬架阻尼模式和转向操作模式，允许驾驶员仅选择 基于由驾驶员选择的预定组合来调节机动车辆的悬架阻尼和转向力，以及基于预定条件自动调整模式。

公开(公告)号：US5461564A

公开(公告)日：1995-10-24

申请号：US288095

申请日：1994-08-09

申请人： Ronald J. Collins ,  Christopher A. Tallon ,  Kelly H. Jones ,  Joseph M. Raad ,  Steven J. Reimers ,  Martin Bieber

发明人： Ronald J. Collins ,  Christopher A. Tallon ,  Kelly H. Jones ,  Joseph M. Raad ,  Steven J. Reimers ,  Martin Bieber

IPC分类号： B60G17/015 ,  B60G17/019 ,  B62D65/00 ,  G01D18/00

CPC分类号： G01D18/008 ,  B60G17/01933 ,  G01M17/0074 ,  B60G2204/11 ,  B60G2206/93 ,  B60G2400/25 ,  B60G2400/252 ,  B60G2401/00 ,  B60G2500/30 ,  B60G2800/702 ,  B60G2800/912 ,  B60G2800/914

摘要： An apparatus calibrates a suspension control module of a vehicle to within a preselected tolerance of a predetermined ride height with reference to the vehicle coordinate system, the vehicle having at least one adjustable suspension unit interposed between the sprung and unsprung vehicle mass. The calibration is adjusted for rigid body cross-talk and for suspension system overshoot and undershoot. The apparatus includes a first device for measuring a first distance corresponding to an actual ride height of a vehicle and for generating a first signal representative thereof and a second device for measuring a second distance between the vehicle sprung and unsprung mass and for generating a second signal thereof. The apparatus also includes a processor operatively associated with the first and second measuring devices for comparing the first and second signals and calculating a deviation between the signals, the processor being operative to generate a third signal corresponding to the deviation and store this deviation in the suspension control module. A centering mechanism on the apparatus centers the vehicle over the first measuring device prior to calibration of the suspension control module.

摘要翻译： 一种装置根据车辆坐标系将车辆的悬架控制模块校准到预定乘坐高度的预选公差内，该车辆具有插入在簧上和非簧载车辆之间的至少一个可调节的悬挂单元。 校准调整为刚体串扰和悬架系统过冲和下冲。 该装置包括：第一装置，用于测量对应于车辆的实际乘坐高度的第一距离，以及用于产生代表其的第一信号;以及第二装置，用于测量车辆弹簧簧和非悬挂质量之间的第二距离，并用于产生第二信号 其中。 该装置还包括与第一和第二测量装置可操作地相关联的处理器，用于比较第一和第二信号并计算信号之间的偏差，处理器可操作以产生对应于偏差的第三信号并将该偏差存储在暂停中 控制模块 在校准悬架控制模块之前，该设备上的定心机构使车辆在第一测量装置上居中。

公开(公告)号：US5430647A

公开(公告)日：1995-07-04

申请号：US986407

申请日：1992-12-07

申请人： Joseph M. Raad ,  Jon R. Watson ,  Geoffrey F. Bridges ,  David K. French

发明人： Joseph M. Raad ,  Jon R. Watson ,  Geoffrey F. Bridges ,  David K. French

IPC分类号： B60G17/016 ,  B60G17/00

CPC分类号： B60G17/016 ,  B60G2202/152 ,  B60G2202/412 ,  B60G2400/204 ,  B60G2400/252 ,  B60G2500/30 ,  B60G2500/32

摘要： Method and apparatus for maintaining vehicular ride height in a vehicle having a body, front and rear wheels and an air suspension including front and rear air springs. The method includes sensing vehicle body height relative to the wheels to obtain front and rear vehicle height signals, and sensing vehicle speed to obtain a vehicle speed signal. The method also includes processing the front height signals to obtain a vehicle roll signal that has been compensated for the natural lean of the vehicle, the vehicle roll signal indicating vehicle roll due to steering adjustments by the vehicle operator. The method further includes processing the vehicle speed signal to obtain a vehicle pitch offset signal, indicating vehicle body height change due to longitudinal vehicle acceleration. The method also includes adjusting the height of the vehicle toward a predetermined target ride height based on the vehicle height sensor signals which have been compensated for vehicle roll and pitch.

摘要翻译： 具有主体，前后轮和包括前后空气弹簧的空气悬架的车辆中的车辆行驶高度的保持方法和装置。 该方法包括相对于车轮识别车身高度以获得前后车高信号，以及感测车速以获得车速信号。 该方法还包括处理前方高度信号以获得已经补偿了车辆的自然倾斜的车辆滚动信号，由车辆驾驶员的转向调节指示车辆侧倾的车辆滚动信号。 该方法还包括处理车速信号以获得车辆俯仰偏移信号，指示由于纵向车辆加速度引起的车体高度变化。 该方法还包括基于车辆滚动和俯仰补偿的车辆高度传感器信号来调整车辆的高度朝向预定的目标乘坐高度。