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1. 发明授权

US5948028A Method of improving response time in a vehicle active tilt control system 失效
标题翻译：改善车辆主动倾斜控制系统响应时间的方法
公开(公告)号：US5948028A
公开(公告)日：1999-09-07
申请号：US18160
申请日：1998-02-03
申请人： Joseph Michael Raad , John Allen Oliver, Jr. , Russell Lee Norton , Vladimir V. Kokotovic
发明人： Joseph Michael Raad , John Allen Oliver, Jr. , Russell Lee Norton , Vladimir V. Kokotovic
IPC分类号： B60G17/016 , B60G17/056 , B60G21/055 , B60G21/10 , G06F17/00
CPC分类号： B60G21/0555 , B60G17/0162 , B60G17/056 , B60G21/10 , B60G2202/135 , B60G2202/413 , B60G2202/414 , B60G2202/415 , B60G2204/1224 , B60G2204/81 , B60G2204/8304 , B60G2400/104 , B60G2400/51 , B60G2800/012
摘要： A method is provided for improving response time in a vehicle active tilt control system having front and rear stabilizer bars adjustable by front and rear hydraulic actuators which are movable in first and second opposing directions for adjusting vehicle body roll resistance provided by the stabilizer bars, and having a pressure control valve for controlling hydraulic pressure to the actuators. The method includes the following steps: a) operating only a single lateral accelerometer to determine the direction and magnitude of lateral acceleration during vehicle maneuvers; b) establishing the direction of movement of the front and rear hydraulic actuators in response to the determined direction of lateral acceleration; c) adjusting the pressure control valve in response to the determined magnitude of lateral acceleration; d) determining the rate of change of the magnitude of lateral acceleration as the magnitude of lateral acceleration decreases past a predetermined first threshold; and e) switching direction of movement of the front and rear hydraulic actuators in response to the determined rate of change of the magnitude of lateral acceleration, thereby anticipating directional changes in lateral acceleration to improve response time in adjusting vehicle body roll resistance during vehicle maneuvers.
摘要翻译：提供了一种用于改善车辆主动倾斜控制系统中的响应时间的方法，所述车辆主动倾斜控制系统具有可由前后液压致动器调节的前稳定杆和后稳定杆，所述前后液压致动器可在第一和第二相对方向上移动，用于调节由所述稳定杆提供的车体滚动阻力;以及具有用于控制致动器的液压的压力控制阀。该方法包括以下步骤：a）仅操作单个侧向加速度计，以确定车辆操纵期间横向加速度的方向和幅度; b）响应于确定的横向加速度的方向，建立前后液压致动器的运动方向; c）响应于确定的横向加速度的大小来调节压力控制阀; d）当横向加速度的幅度减小超过预定的第一阈值时，确定横向加速度的幅度的变化率; 以及e）响应于所确定的横向加速度的大小的变化率来切换前后液压致动器的运动方向，从而预期横向加速度的方向变化，以改善在车辆操纵期间调节车体滚动阻力的响应时间。

2. 发明授权

US5782260A Hydraulic flow priority valve 失效
标题翻译：液压流量优先阀
公开(公告)号：US5782260A
公开(公告)日：1998-07-21
申请号：US566628
申请日：1995-12-04
申请人： Barry Howard Jacobs , Roger Wayne Gettel , John Allen Oliver, Jr.
发明人： Barry Howard Jacobs , Roger Wayne Gettel , John Allen Oliver, Jr.
IPC分类号： B62D5/07 , F15B11/16 , F15B13/02
CPC分类号： F15B13/022 , B62D5/07 , F15B11/162 , F15B2211/4053 , F15B2211/428 , F15B2211/45 , F15B2211/7142 , F15B2211/781 , Y10T137/2652 , Y10T137/2657
摘要： A flow priority valve receives input fluid flow and divides the fluid flow between a primary device and a secondary device. The valve comprises a valve body have a bore formed therein, the bore having first and second ends and first and second annular channels formed in communication with the bore. The valve body further includes an input flow channel formed in communication with the bore for receiving the input fluid flow. A spool is movable within the bore and has a first land and a second land adjacent opposing ends of the spool. A spring is positioned within the bore for biasing the spool towards the first end of the bore. An electronically variable orifice (EVO) for electronically adjusting flow includes an EVO input portion in fluid communication with both the first annular channel and the first end of the bore, and an EVO output portion in fluid communication with both the second end of the bore and the primary device. The second annular channel is in fluid communication with the secondary device. The first and second lands are movable with the spool for selectively limiting flow from the bore to the first and second annular channels, respectively. The valve may be used for remote flow control, splitting between primary and secondary devices, and two such valves may be used to provide variable control to two devices.
摘要翻译：流量优先阀接收输入流体流并且在主要装置和次级装置之间划分流体流动。所述阀包括阀体，所述阀体具有形成在其中的孔，所述孔具有第一和第二端以及形成为与所述孔连通的第一和第二环形通道。阀体还包括与孔连通的输入流动通道，用于接纳输入流体流。阀芯可在孔内移动，并具有邻近阀芯相对端的第一焊盘和第二焊盘。弹簧定位在孔内以将阀芯朝向孔的第一端偏压。用于电子调节流动的电子可变孔口（EVO）包括与孔的第一环形通道和第一端部流体连通的EVO输入部分和与孔的第二端部流体连通的EVO输出部分和主要设备。第二环形通道与次级装置流体连通。第一和第二平台可以与阀芯一起移动，用于分别限制从孔到第一和第二环形通道的流动。该阀可以用于远程流量控制，主要和次要装置之间的分离，并且两个这样的阀可用于向两个装置提供可变控制。

3. 发明授权

US5948027A Method for enhancing vehicle stability 失效
标题翻译：提高车辆稳定性的方法
公开(公告)号：US5948027A
公开(公告)日：1999-09-07
申请号：US709029
申请日：1996-09-06
申请人： John Allen Oliver, Jr. , Michael Barry Goran , Steven John Ferrari
发明人： John Allen Oliver, Jr. , Michael Barry Goran , Steven John Ferrari
IPC分类号： B60G17/015 , B60G21/055
CPC分类号： B60G17/0152 , B60G21/0555 , B60G2400/0523 , B60G2400/104 , B60G2400/204
摘要： A method of enhancing vehicle stability and response in a vehicle having an active roll control system with front and rear suspensions each including an anti-roll bar, and the control system including a hydraulic system for providing an anti-roll moment which acts on the vehicle by means of hydraulic cylinders connected to the anti-roll bars, includes the following steps: a) determining the vehicle speed; b) determining the steering wheel angle; c) calculating the desired vehicle yaw rate based upon the determined speed and steering wheel angle; d) sensing the actual yaw rate; e) comparing the desired yaw rate to the actual yaw rate; f) increasing the percentage of the anti-roll moment provided to the rear anti-roll bar if the actual yaw rate is less than the desired yaw rate, thereby decreasing understeer, increasing yaw rate, and enhancing vehicle response; and g) increasing the percentage of the anti-roll moment provided to the front anti-roll bar if the actual yaw rate is greater than the desired yaw rate, thereby increasing understeer, decreasing yaw rate, and enhancing vehicle stability. The anti-roll moment distribution is further adjusted for steering precision enhancement.
摘要翻译：一种提高车辆稳定性和响应性的方法，该车辆具有主动侧倾控制系统，前后悬架均包括防倾杆，并且该控制系统包括用于提供作用在车辆上的防倾向力矩的液压系统通过与防倾杆连接的液压缸，包括以下步骤：a）确定车速; b）确定方向盘角度; c）基于确定的速度和方向盘角度来计算期望的车辆偏航率; d）感测实际的横摆率; e）将所需的偏航率与实际的横摆率进行比较; f）如果实际的横摆率小于期望的横摆率，则增加提供给后侧防侧倾杆的防倾斜力矩的百分比，从而减少不足转向，增加横摆率并提高车辆响应; 并且g）如果实际横摆率大于期望的横摆率，则增加提供给前防侧倾杆的防倾斜力矩的百分比，从而增加转向不足，减小横摆角速度并提高车辆稳定性。进一步调整转向力矩分布，提高转向精度。

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