Anti-skid brake control system
    11.
    发明授权
    Anti-skid brake control system 失效
    防滑制动控制系统

    公开(公告)号:US4269454A

    公开(公告)日:1981-05-26

    申请号:US932306

    申请日:1978-08-09

    CPC分类号: B60T8/17633

    摘要: An anti-skid brake conrol system includes a sensor which produces a signal proportional to the acceleration of a braked wheel and a comparator that responds to the acceleration signal by producing a signal which undergoes a step change at set acceleration levels so as to divide successive deceleration/acceleration cycles into successive acceleration periods separated by intermediate periods. The output of the comparator is integrated to produce an output signal which changes in a progressive manner in one sense during each acceleration period and in the opposite sense during each intermediate period so as to vary in accordance with surface friction conditions. The output signal is used to vary a control parameter or function within the system in accordance with the surface friction conditions. The integrator may comprise a capacitor which is discharged so that its potential falls during each acceleration period from an initial predetermined level and is then charged during each intermediate period so that its potential rises, the charging rate being increased at a predetermined threshold potential below which low friction conditions are signalled.

    摘要翻译: 防滑制动控制系统包括:传感器,其产生与制动轮的加速度成比例的信号;以及比较器,其通过产生在设定的加速度级上经历阶梯变化的信号来响应加速度信号,以便将连续减速 /加速循环进入由中间时间间隔开的连续加速时段。 比较器的输出被积分以产生输出信号,该输出信号在每个加速周期期间以一种意义逐渐变化,并且在每个中间周期期间以相反的方式变化,以便根据表面摩擦条件而变化。 输出信号用于根据表面摩擦条件改变系统内的控制参数或功能。 积分器可以包括放电的电容器,使得其电势在每个加速期间从初始预定电平下降,然后在每个中间周期期间被充电,使得其电位上升,充电速率增加到预定阈值电位以下,低于该低电平 发出摩擦条件。

    Anti-lock brake control system
    12.
    发明授权
    Anti-lock brake control system 失效
    防抱死制动控制系统

    公开(公告)号:US4260200A

    公开(公告)日:1981-04-07

    申请号:US893610

    申请日:1978-05-11

    CPC分类号: B60T8/17613

    摘要: An anti-lock brake control system for a vehicle with braked wheels comprises a sensor to produce a signal proportional to the deceleration/acceleration of the braked wheel, a deceleration sensing switch to respond to the deceleration/acceleration signal by producing a brake pressure release pulse when deceleration of the wheel exceeds a predetermined threshold level, a charge storage device which is adapted so that it charges in a predetermined progressive manner while the brake pressure release pulse is produced and discharges at a predetermined decay rate, a comparator that compares the potential on the charge storage device with a reference potential and produces an extension brake pressure release pulse according to their relative values, and apparatus to vary one of said potentials in a manner dependent on acceleration of the wheel above a preset acceleration threshold so that the extension brake pressure release pulse is terminated by increasing wheel acceleration. In one embodiment, the apparatus varies the reference potential so that the change of the reference potential with increasing acceleration is in the same sense as the change in the potential on the charge storage device when charging, the comparator producing said extension pulse only while the potential on the charge storage device exceeds the fixed reference potential. In another embodiment, the apparatus varies the potential on the charge storage device by discharging the latter after it has been charged from a fixed starting potential, the comparator producing an extension pulse as soon as the potential on the charge storage device exceeds a fixed reference potential and terminating the extension pulse once the potential on the charge storage device falls to a fixed terminating potential above the fixed reference potential.

    摘要翻译: 一种用于具有制动轮的车辆的防抱死制动控制系统,包括:传感器,用于产生与制动轮的减速/加速度成比例的信号;减速度检测开关,用于通过产生制动压力释放脉冲来响应减速/加速度信号 当车轮的减速度超过预定的阈值水平时,电荷存储装置适于在制动压力释放脉冲产生并以预定的衰减速率放电时以预定的渐进方式充电;比较器, 具有参考电位的电荷存储装置,并根据其相对值产生延伸制动压力释放脉冲;以及装置,其以取决于车轮的加速度高于预设加速度阈值的方式改变所述电位之一,使得延伸制动压力 释放脉冲通过增加车轮加速度来终止。 在一个实施例中,装置改变参考电位,使得加速度增加时参考电位的变化与充电时电荷存储装置上的电位变化相同,比较器产生所述扩展脉冲仅在电位 在电荷存储装置上超过固定参考电位。 在另一个实施例中,该装置通过在电池从固定的起始电位充电之后对其进行放电来改变电荷存储装置上的电位,一旦电荷存储装置上的电位超过固定的参考电位,比较器就产生延长脉冲 一旦电荷存储装置上的电位下降到高于固定参考电位的固定终止电位,则终止延长脉冲。

    Anti-lock brake control system II
    13.
    发明授权
    Anti-lock brake control system II 失效
    防抱死制动控制系统II

    公开(公告)号:US4230376A

    公开(公告)日:1980-10-28

    申请号:US893799

    申请日:1978-04-05

    CPC分类号: B60T8/173 B60T8/17633

    摘要: In an anti-lock brake control system for a vehicle with braked wheels, a brake pressure release pulse is produced in a manner dependent on wheel deceleration and is processed so that it cannot exceed a preset maximum length and is spaced from any other brake pressure release pulses by a preset inhibit period so that brake pressure release pulses cannot be produced above a certain maximum repetition frequency. A deceleration sensing switch produces an output pulse, and a pulse circuit is triggered by the leading edge of the output pulse to commence said brake pressure release pulse, and is reset by the lagging edge of said output pulse to terminate said brake pressure release pulse. A pulse timing circuit is also triggered by the leading edge of said output pulse and operates to terminate said brake pressure release pulse after said predetermined maximum duration if it has not been terminated already. An inhibit timing circuit is triggered by the brake pressure release pulse from the pulse circuit, and while triggered, produces an inhibit pulse that prevents the pulse circuit from being re-triggered, the inhibit timing circuit resetting to remove said inhibit pulse after expiry of said preset inhibit period following termination of the brake pressure release pulse.

    摘要翻译: 在具有制动轮的车辆的防抱死制动控制系统中,以取决于车轮减速度的方式产生制动压力释放脉冲,并且被处理使得其不能超过预设的最大长度并与任何其他制动压力释放 脉冲以预设的禁止周期,使得不能在某个最大重复频率之上产生制动压力释放脉冲。 减速检测开关产生输出脉冲,并且由输出脉冲的前沿触发脉冲电路以开始所述制动压力释放脉冲,并且由所述输出脉冲的滞后边缘复位以终止所述制动压力释放脉冲。 脉冲定时电路也由所述输出脉冲的前沿触发,并在所述预定最大持续时间之后停止所述制动压力释放脉冲,如果它尚未被终止。 禁止定时电路由来自脉冲电路的制动压力释放脉冲触发,并且当被触发时,产生禁止脉冲电路被重新触发的禁止脉冲,禁止定时电路复位以在所述禁止定时电路期满之后去除所述禁止脉冲 停止制动压力释放脉冲后的预设禁止期。

    Electronic braking system
    15.
    发明授权
    Electronic braking system 失效
    电子制动系统

    公开(公告)号:US5328251A

    公开(公告)日:1994-07-12

    申请号:US150234

    申请日:1993-11-09

    申请人: Malcolm Brearley

    发明人: Malcolm Brearley

    摘要: An electronic braking system for wheeled vehicles comprising an electronic controller which produces, in response to driver braking demands, electronic signals for controlling the braking pressures applied to the vehicle wheels from a source of braking pressure. The system includes a second, back-up braking pressure source which can be selected when required, and means for switching over from the first-mentioned normal source of braking pressure to the back-up pressure source at selected occasions when the vehicle is being braked and has come to rest, provided that the prevailing driver's braking demand is above a predetermined minimum threshold. A test is then performed on the braking pressure signals generated by the system while it is energized by the back-up source and a warning signal is generated if the back-up source is found to be faulty.

    摘要翻译: 一种用于轮式车辆的电子制动系统,包括电子控制器,其响应于驾驶员制动需求而产生用于控制从制动压力源施加到车轮的制动压力的电子信号。 该系统包括可在需要时选择的第二备用制动压力源,以及用于在车辆制动时的选择场合从首先提到的正常制动压力源切换到后备压力源的装置 并且已经进入休息状态,前提是驾驶员的制动需求高于预定的最小阈值。 然后,在由备用电源通电时,对系统产生的制动压力信号进行测试,如果发现备用电源发生故障,则会产生警告信号。

    Anti-skid braking systems for vehicles
    17.
    发明授权
    Anti-skid braking systems for vehicles 失效
    车辆防滑制动系统

    公开(公告)号:US4852953A

    公开(公告)日:1989-08-01

    申请号:US191991

    申请日:1988-05-09

    CPC分类号: B60T8/1755 B60T8/50

    摘要: An anti-skid braking system for a vehicle comprising a supply of fluid for actuating a plurality of wheel brakes, a skid control unit interposed between the fluid supply and the brakes, sensors to detect the skidding of a plurality of wheels and actuating means responsive to skid signals from the sensors and adapted to actuate the skid control unit to relive the fluid pressure at the brake of the wheel at impending lock by means of a plurality of successive first brake release periods. In order to reduce yawing, when an impending skid condition is detected at one wheel, the skid control unit is arranged to induce second, shorter brake release periods in one or more of the brakes of the wheels not at impending lock.

    摘要翻译: 一种用于车辆的防滑制动系统,包括供应用于致动多个车轮制动器的流体,设置在流体供应和制动器之间的滑动控制单元,用于检测多个车轮的打滑的传感器和响应于 来自传感器的滑行信号并且适于致动滑动控制单元,以通过多个连续的第一制动器释放时段来迫使在即将到来的锁定的车轮制动器处的流体压力。 为了减少偏航,当在一个车轮处检测到即将到来的滑行条件时,滑动控制单元布置成在一个或多个制动器中引起第二,较短的制动器释放时段,而不是即将发生的锁定。

    Vehicle braking system
    18.
    发明授权
    Vehicle braking system 失效
    车辆制动系统

    公开(公告)号:US4712839A

    公开(公告)日:1987-12-15

    申请号:US868559

    申请日:1986-05-30

    摘要: An electronically controlled braking system for a vehicle in which vehicle load measurements, made dynamically, as used to modify the braking demand, individually for each axle of the vehicle and in which, under predetermined conditions of vehicle speed, braking level and operating gradient, the deceleration error formed between braking demand by the driver and measured actual vehicle deceleration is used gradually, over a number of vehicle stops, to form an adaptive factor for correcting the braking demand in order to restore expected braking performance. No correction to the adaptive factor based on the deceleration error is made during a given stopping operation of the vehicle, but a summation of previous errors is arranged to cause a small increment in correction to be made after each stop until, over a number of vehicle stops, the error formed under the predetermined conditions falls to zero. Braking demands by the driver can be arranged to be compensated by introducing a demand offset dependent on the prevailing gradient on which the vehicle is operating.

    摘要翻译: 一种用于车辆的电子控制制动系统,其中动态地动态地动态地修改制动需求的车辆负载测量单独地用于车辆的每个轴,并且在车辆速度,制动水平和操作梯度的预定条件下, 逐渐地在多个车辆停靠点上使用驾驶员的制动需求和实际车辆减速度之间形成的减速误差,以形成用于校正制动需求的自适应系数,以恢复预期的制动性能。 在车辆的给定停止操作期间不对基于减速误差的自适应因子进行校正,而是将先前错误的总和设置为在每个停止之后进行校正的小增量,直到在多个车辆 在预定条件下形成的误差为零。 可以通过引入取决于车辆正在运行的主要梯度的需求偏移来布置驾驶员的制动要求。

    Anti-skid brake control system
    19.
    发明授权
    Anti-skid brake control system 失效
    防滑制动控制系统

    公开(公告)号:US4320460A

    公开(公告)日:1982-03-16

    申请号:US76492

    申请日:1979-09-17

    CPC分类号: B60T8/17613

    摘要: The invention provides a control system which predicts the brake re-apply point during a brake pressure release/re-apply cycle by measuring the duration of the synchronous running period, that period during which the wheel is decelerating at substantially the same rate as the vehicle. An increase in the synchronous running period above an optimum period is arranged to bring about an earlier re-application of the brakes in a cycle, and a decrease in the synchronous running period is used to effect a later re-application of the brakes. Various circuits are disclosed for detecting the duration of the synchronous running period. In a preferred circuit a track and store circuit compares an acceleration/deceleration signal with a stored signal whose amplitude follows that of the acceleration/deceleration signal, and the synchronous running period is taken to be the period between coincidences between the acceleration/deceleration signal and the stored signal. The timing of the brake re-apply signal is preferably controlled by varying a re-set threshold of a threshold switch responsive to wheel acceleration/deceleration.

    摘要翻译: 本发明提供了一种控制系统,其通过测量同步运行时段的持续时间来预测在制动压力释放/重新施加循环期间的制动重新施加点,其中车轮以与车辆基本相同的速度减速的时段 。 布置在最佳周期之上的同步运行周期的增加,以便在一个循环中更早地重新应用制动器,并且使用同步运行周期的减少来实现稍后重新应用制动器。 公开了用于检测同步运行周期的持续时间的各种电路。 在优选电路中,轨道和存储电路将加速/减速信号与其加速/减速信号的幅度相加的存储信号进行比较,同步运行周期被认为是加速/减速信号与 存储信号。 优选地,通过响应于车轮加速/减速改变阈值开关的重新设定的阈值来控制制动重新施加信号的定时。

    Failure detection circuit for a vehicle anti-skid braking system
    20.
    发明授权
    Failure detection circuit for a vehicle anti-skid braking system 失效
    车辆防滑制动系统故障检测电路

    公开(公告)号:US4106821A

    公开(公告)日:1978-08-15

    申请号:US730423

    申请日:1976-10-07

    申请人: Malcolm Brearley

    发明人: Malcolm Brearley

    IPC分类号: B60T8/92 B60T8/88 B60T8/00

    CPC分类号: B60T8/885

    摘要: An anti-skid braking system including a plurality of independent solenoid energizing circuits which are controlled in accordance with the outputs of sensors on separate wheels of a vehicle, has a failure detection circuit comprising a timer triggered into operation each time any one of the solenoids is energized, and reset when a back e.m.f. generated by the deactivation of any solenoid is detected. If the timer is not reset within a fixed period the system is disabled and a warning lamp is energized. The system also includes a circuit utilizing the back e.m.f. signals for testing the system each time it is switched on.

    摘要翻译: 一种防滑制动系统,包括根据车辆的分离车轮上的传感器的输出来控制的多个独立的螺线管通电电路,具有故障检测电路,其包括每当螺线管是任一个螺线管是 通电,并在电机后复位 检测到任何螺线管的停用产生的。 如果定时器在固定时间内未复位,系统将被禁用并且警告灯通电。 该系统还包括利用后面电路的电路。 用于在每次打开系统时测试系统的信号。