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    • 1. 发明授权
    • Method and system for drivetrain oscillation detection and control for
anti-lock brake systems
    • 用于防抱死制动系统的传动系振动检测和控制方法和系统
    • US5511867A
    • 1996-04-30
    • US437436
    • 1995-05-05
    • Mark S. LuckevichDan Negrin
    • Mark S. LuckevichDan Negrin
    • B60T8/173B60T8/32
    • B60T8/173B60T8/3215
    • A method and system for modifying anti-lock brake control to a vehicle experiencing drivetrain-induced oscillations. A wheel speed of each of the wheels is sensed to generate a corresponding speed signal. A drivetrain-induced oscillation condition is detected in one of two ways. First, a wheel speed peak count is determined for each of the wheels. A drivetrain-induced oscillation is then detected if multiple peaks occur within a predetermined period of time. Alternatively, a frequency of oscillation for each of the wheel speeds is determined and compared to a predetermined frequency threshold. Upon determining that the vehicle is experiencing drivetrain-induced oscillation during an ABS event, brake pressure is applied to the driven wheels at approximately the same frequency as the frequency of oscillation of the drivetrain-induced oscillation.
    • 一种用于对经过传动系引起的振荡的车辆改进防抱死制动控制的方法和系统。 感测到每个车轮的车轮速度以产生相应的速度信号。 以两种方式之一检测到传动系诱发的振荡条件。 首先,为每个车轮确定车轮速度峰值计数。 如果在预定时间段内出现多个峰值,则检测到传动系诱发的振荡。 或者,确定每个车轮速度的振荡频率并将其与预定频率阈值进行比较。 在确定车辆在ABS事件期间经历传动系引起的振荡时,制动压力以与传动系诱导的振荡的振荡频率大致相同的频率施加到从动轮。
    • 2. 发明授权
    • Dynamic rear proportioning brake system
    • 动态后配比制动系统
    • US5632535A
    • 1997-05-27
    • US518112
    • 1995-08-28
    • Mark S. LuckevichMark R. BielekDan Negrin
    • Mark S. LuckevichMark R. BielekDan Negrin
    • B60T8/30B60T8/1766B60T8/26B60T8/48B60T8/34B60T8/60
    • B60T8/268B60T8/1766
    • A dynamic rear proportioning system is integrated with an existing vehicle anti-lock braking system (ABS) and performs the function of the rear brake pressure proportioning where ABS is not required. The rear brake hydraulic channel(s) are isolated from the master cylinder by activating the rear isolation valves, provided in the ABS, to provide the optimum brake force balance, regardless of vehicle loading, without the use of a load sensing mechanism. The system estimates vehicle and wheel deceleration, vehicle speed, and lateral acceleration as well as the rear wheel slip to dynamically control the rear brake force. By continually updating these control parameters, the system can further increase or decrease the rear brake pressure to maintain the optimum brake force balance throughout the braking maneuver.
    • 动态后配比系统与现有的车辆防抱死制动系统(ABS)集成,并执行不需要ABS的后制动压力比例功能。 通过启动ABS中提供的后隔离阀,后制动液压通道与主缸隔离,以便在不使用负载感测机构的情况下,提供最佳制动力平衡,无论车辆负载如何。 该系统估计车辆和车轮减速度,车辆速度和横向加速度以及后轮滑动以动态地控制后制动力。 通过不断更新这些控制参数,系统可以进一步增加或减少后制动压力,以便在整个制动操作过程中保持最佳的制动力平衡。
    • 3. 发明授权
    • Method and system for controllably restricting the on time of a
vehicular pump in an electro-hydraulic control system
    • 用于可控制地限制电动液压控制系统中的车辆泵的接通时间的方法和系统
    • US5522650A
    • 1996-06-04
    • US417651
    • 1995-04-05
    • Dan NegrinMark S. LuckevichBrian C. Tuck
    • Dan NegrinMark S. LuckevichBrian C. Tuck
    • B60T8/40B60T13/16
    • B60T8/4045B60T8/404Y10S303/11
    • The method and system for controllably restricting the on time of a pump of an electro-hydraulic control system for a hydraulic brake system by modeling the amount of hydraulic brake fluid in a low pressure accumulator (LPA) of the hydraulic brake system. Sensors sense wheel speed of their respective wheels of a vehicle. Control valves, including isolation and dump valves, together with the pump, vary the amount of brake fluid in the LPA. A control unit electrically coupled to the pump, the control valves and the wheel speed sensors, initially detects an electro-hydraulic control event based on the sensed wheel speeds and then activates the control valves and pump which vary the amount of brake fluid in the LPA. The control unit models the amount of brake fluid in the LPA during the activation and controls the state of the pump based on the modeled amount of brake fluid in the LPA. The modeled amount of brake fluid in the LPA consequently is based on the on time of the pump and the total on time of all of the dump valves in the electro-hydraulic control system.
    • 通过对液压制动系统的低压蓄能器(LPA)中的液压制动液的量进行建模,可控制地限制用于液压制动系统的电液控制系统的泵的接通时间的方法和系统。 传感器感测车辆相应车轮的车轮速度。 控制阀,包括隔离和排放阀,与泵一起,改变LPA中制动液的量。 电耦合到泵,控制阀和车轮速度传感器的控制单元最初基于所感测的车轮速度来检测电液控制事件,然后激活控制阀和泵,其改变LPA中的制动流体的量 。 控制单元在激活期间模拟LPA中的制动液量,并根据LPA中制动液的建模量控制泵的状态。 因此,LPA中的制动液的建模量是基于泵的接通时间和电液控制系统中所有排放阀的总和准时。
    • 5. 发明授权
    • Method and system for split mu control for anti-lock brake systems
    • 防抱死制动系统的分体式控制方法和系统
    • US5551769A
    • 1996-09-03
    • US384509
    • 1995-02-06
    • Mark S. Luckevich
    • Mark S. Luckevich
    • B60T8/1764B60T8/50B60T8/84B60T8/32
    • B60T8/505B60T8/1764
    • A method and system for modifying anti-lock brake control to a vehicle braking on a split mu surface. Each of the wheel speeds are sensed and compared to a wheel speed reference. If the speed of only one of the front wheels departs from the wheel speed reference in excess of a predetermined slip threshold, a split mu control is activated. Upon detecting a departure of the high mu wheel, a first pressure control profile is applied to the low mu wheel, while a second control pressure profile different from the first pressure control profile is applied to the high mu wheel. Once the vehicle has transitioned from braking on a split mu surface to braking on a homogeneous mu surface, normal ABS control pressure is applied to the wheels.
    • 一种用于将防抱死制动控制修改为在分割的mu表面上的车辆制动的方法和系统。 检测每个车轮速度并将其与车轮速度参考值进行比较。 如果只有一个前轮的速度偏离车轮速度参考超过预定滑差阈值,则分动mu控制被激活。 在检测到高mu轮的离开时,第一压力控制轮廓被施加到低mu轮,而与第一压力控制轮廓不同的第二控制压力分布被施加到高mu轮。 一旦车辆已经从分裂的mu表面上的制动转变为在均匀的mu表面上制动,则将正常的ABS控制压力施加到车轮上。
    • 6. 再颁专利
    • Electronic brake management system with manual fail safe
    • 电子制动管理系统,手动故障安全
    • USRE44677E1
    • 2013-12-31
    • US09939509
    • 2001-08-24
    • Gregory P. CampauAndrew W. KingstonRobert L. FergerThomas WeigertSalvatore OliveriBlaise J. GanzelMark S. Luckevich
    • Gregory P. CampauAndrew W. KingstonRobert L. FergerThomas WeigertSalvatore OliveriBlaise J. GanzelMark S. Luckevich
    • B60T8/34
    • B60T8/4081B60T7/042B60T8/267B60T8/3255B60T8/4827B60T13/16B60T13/686B60T13/74B60T17/221Y10S303/03
    • An improved electro-hydraulic brake system having features for improving the pedal feel of the system, while further having design features which contribute to the economy of manufacture of certain components of the system. The system provides for an electrically powered normal source of pressurized hydraulic brake fluid, and a manually powered backup source of pressurized hydraulic brake fluid to the vehicle brakes in the event of failure of the normal source. During normal braking, fluid from the backup source is redirected from the vehicle brakes to a pedal simulator. The pedal simulator preferably includes arrangements of spring loaded pistons, expansion volumes, and damping orifices, together with valves selectively controlling the flow of fluid to and from the pedal simulator which provides for an improved pedal feel during vehicle braking. The brake system of the invention further includes a relatively low cost fluid separator unit which is provided which prevents intermixing of pressurized fluid between the backup source and the normal source. The fluid separator unit acts to permit the normal source to act upon the hydraulic brake fluid of the backup source to operate the vehicle brakes. The fluid separator unit is preferably embodied as a piston having two working faces, each of the same diameter.
    • 一种改进的电动液压制动系统,其具有用于改善系统的踏板感觉的特征,同时还具有有助于制造系统的某些部件的经济性的设计特征。 该系统提供电动普通的加压液压制动液源,以及在正常来源发生故障的情况下,车辆制动器的加压液压制动液的手动备用源。 在正常制动期间,来自备用源的流体从车辆制动器转向踏板模拟器。 踏板模拟器优选地包括弹簧加载的活塞,膨胀体积和阻尼孔的布置,以及阀选择性地控制流入和离开踏板模拟器的流体流动,其提供在车辆制动期间改善的踏板感觉。 本发明的制动系统还包括一种相对低成本的流体分离器单元,其被设置成防止加压流体在备用源和普通源之间的混合。 流体分离器单元用于使正常源作用在备用源的液压制动流体上以操作车辆制动。 流体分离器单元优选地实施为具有两个相同直径的两个工作面的活塞。
    • 7. 发明授权
    • Electronic brake management system with a signal modulation controller and a brushless motor
    • 具有信号调制控制器和无刷电机的电子制动管理系统
    • US06206482B1
    • 2001-03-27
    • US09431866
    • 1999-11-02
    • Gregory P. CampauMark S. LuckevichEdward R. HornbackJohn D. CotnerClark E. Lowman
    • Gregory P. CampauMark S. LuckevichEdward R. HornbackJohn D. CotnerClark E. Lowman
    • B60T1300
    • B60T8/366B60T8/36B60T8/4022B60T8/404B60T8/4059B60T13/662B60T17/02
    • An electronic brake management system for controlling the application of fluid pressure to the brakes associated with wheels on a vehicle is disclosed. The system comprises a plurality of hydraulic valves for controlling the application of fluid to the brakes and a plurality of valve drivers for controlling the valves in accordance with respective electrical control signals for the plurality of valves. The system further includes a valve pulse width modulation controller for generating the respective electrical valve control signals applied to the valve drivers. The electrical valve control signals from the pulse width modulation controller are modulated to reduce the amount of electrical power supplied by the individual ones of the electrical signals once the valve associated with the one of the electrical signals has changed its opening to a desired position. The system further includes a brushless motor for driving a hydraulic pump for supplying fluid to the brakes in accordance with a pulse width modulated motor control signal from a motor signal modulation controller. The brushless motor provides a feedback signal to the motor signal modulation controller which is indicative of the position of the brushless motor rotor.
    • 公开了一种用于控制对与车辆上的车轮相关联的制动器的流体压力的应用的电子制动管理系统。 该系统包括用于控制流体到制动器的多个液压阀和用于根据多个阀的相应电气控制信号来控制阀的多个阀驱动器。 该系统还包括阀脉宽调制控制器,用于产生施加到阀驱动器的各个电气阀控制信号。 调节来自脉宽调制控制器的电气阀控制信号,一旦与电信号中的一个相关联的阀已经将其开度改变到期望位置,就减少由各个电信号提供的电力的量。 该系统还包括用于驱动用于根据来自电动机信号调制控制器的脉宽调制电机控制信号向制动器供应流体的液压泵的无刷电动机。 无刷电动机向电动机信号调制控制器提供反馈信号,其指示无刷电动机转子的位置。