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    • 6. 发明授权
    • Wheel speed and acceleration detection immune to disturbance
    • 车轮速度和加速度检测免受干扰
    • US4670852A
    • 1987-06-02
    • US632657
    • 1984-07-20
    • Shouichi MasakiKimio TamuraNoriyuki NakashimaTeruyoshi WakaoKen AsamiKazunori Sakai
    • Shouichi MasakiKimio TamuraNoriyuki NakashimaTeruyoshi WakaoKen AsamiKazunori Sakai
    • B60T8/173B60T8/66G01P3/489G01P11/00G01P15/00
    • G01P3/489B60T8/173B60T2210/14
    • A pulse signal is generated by a wheel speed sensor with a frequency proportional to the speed of rotation of a vehicle wheel, the pulse signal comprising a plurality of frames each having a series of a predetermined number of pulses which are tended to be affected by noise and pulse mutilation. Pulses in each frame are counted and from the count is derived an instantaneous wheel speed value. The difference between the successively derived instantaneous speed values is taken and compared with a predetermined threshold. A first or a second indication is given in response to the difference being lower or higher than the threshold, respectively. If the first indication is given, output signals representing the average wheel speed and average wheel acceleration of the wheel are derived from the instantaneous speed values of successive frames. If the second indication is given, the instantaneous speed value of the previous frame is used instead of the instantaneous value of the subsequent frame which is disturbed by noise or pulse mutilation to derive the output signals.
    • 脉冲信号由具有与车轮的转速成比例的频率的车轮速度传感器产生,该脉冲信号包括多个帧,每个帧具有预定数量的脉冲倾向于受噪声影响 和脉冲切割。 对每个帧中的脉冲进行计数,并从计数得出瞬时轮速值。 取出连续导出的瞬时速度值之间的差并与预定阈值进行比较。 响应于差分分别低于或高于阈值来给出第一或第二指示。 如果给出第一指示,则表示轮的平均车轮速度和平均车轮加速度的输出信号从连续帧的瞬时速度值导出。 如果给出第二指示,则使用前一帧的瞬时速度值而不是被噪声或脉冲切断所干扰的后续帧的瞬时值来导出输出信号。
    • 8. 发明授权
    • Detection of abnormality for rotational speed sensor
    • 检测转速传感器异常
    • US4969695A
    • 1990-11-13
    • US180629
    • 1988-04-06
    • Hiromi MaehataYutaka OkudaSyouichi MasakiSatoshi HiranoKen AsamiKazunori Sakai
    • Hiromi MaehataYutaka OkudaSyouichi MasakiSatoshi HiranoKen AsamiKazunori Sakai
    • B60T8/88G01P3/42G01P3/44G01P21/02
    • G01P21/02B60T8/885B60T2270/416
    • In an apparatus for detecting the abnormality of a rotational speed sensor adapted for, for example, an anti-skid control system, a time period within which a subsequent pulse will be generated by the rotational speed sensor in response to the rotation of a body of revolution such as wheel is estimated on the basis of the latest pulse interval of the pulses previously generated therefrom and a value corresponding to the force of inertia of the wheel developed on the braking operation thereof. The determination of abnormality of the rotational speed sensor is made when the subsequent pulse is not produced within the estimated time period. This is arranged based on the fact that the pulse interval depends upon the inertial force of the wheel. With the above arrangement, the abnormality detection of the speed sensor can be quickly made, so that a fail-safe control in a braking system can be speedily performed in response to the occurrence of abnormality of the speed sensor.
    • 在用于检测适合于例如防滑控制系统的转速传感器的异常的装置中,响应于旋转速度传感器的身体的旋转将由旋转速度传感器产生后续脉冲的时间段 基于先前从其产生的脉冲的最新脉冲间隔来估计诸如车轮的转速,以及对应于在其制动操作时产生的车轮的惯性力的值。 当在预测时间段内不产生后续脉冲时,进行转速传感器的异常判定。 这是基于脉冲间隔取决于车轮的惯性力的事实进行的。 通过上述结构,可以快速地进行速度传感器的异常检测,从而能够根据速度传感器的异常的发生迅速地进行制动系统的故障保护控制。
    • 9. 发明授权
    • Vehicle wheel slip control system
    • 车轮滑移控制系统
    • US5019984A
    • 1991-05-28
    • US366656
    • 1989-06-15
    • Syouichi MasakiHiromi MaehataKazunori SakaiTatsuo Sugitani
    • Syouichi MasakiHiromi MaehataKazunori SakaiTatsuo Sugitani
    • B60T8/172B60T8/1755B60T8/58B60T8/66
    • B60T8/172B60T8/58B60T2250/04
    • Sensors detect rotational speeds of respective vehicle wheels. A slip detection reference value is calculated from the detected rotational speeds of the vehicle wheels. Acceptable slip ranges for the respective vehicle wheels are determined in accordance with the calculated slip detection reference value. The rotational speeds of the vehicle wheels are compared with the corresponding acceptable slip ranges respectively. Slip controls of the respective vehicle wheels are performed when the rotational speeds of the vehicle wheels reside outside the corresponding acceptable slip ranges respectively. The highest of at least two of the rotational speeds of the vehicle wheels is selected. Differences between the respective rotational speeds of the vehicle wheels and the selected highest vehicle wheel rotational speed are calculated. The slip detection reference value is corrected in accordance with the respective calculated differences.
    • 传感器检测各车轮的转速。 根据检测到的车轮的转速来计算滑移检测基准值。 根据计算出的滑移检测基准值确定各车轮的可接受的滑移范围。 将车轮的转速分别与相应的可接受的滑移范围进行比较。 当车轮的转速分别位于相应的可接受滑移范围之外时,执行各车轮的滑动控制。 选择车轮的至少两个转速中的最高值。 计算车轮的相应转速与所选择的最高车轮转速之间的差异。 滑差检测基准值根据各自计算的差异被校正。
    • 10. 发明授权
    • Apparatus for controlling hydraulic pressure to be applied to effect
braking of wheels
    • 用于控制要施加以产生车轮制动的液压的装置
    • US4805104A
    • 1989-02-14
    • US95183
    • 1987-09-11
    • Masashi KishimotoKen AsamiKazunori Sakai
    • Masashi KishimotoKen AsamiKazunori Sakai
    • B60T8/58B60T8/62B60T8/64
    • B60T8/58
    • A wheel slipping control apparatus for controlling a braking hydraulic pressure to be applied to a wheel so as to perform an effective braking operation. The wheel slipping control apparatus comprises a control unit for generating a control signal in accordance with the wheel slipping state so as to perform a braking pressure control cycle so that the braking hydraulic pressure is set to a pressure decreasing mode and then to a pressure increasing mode. In the control unit, one of the braking pressure control cycles to be performed is determined as a learning control cycle to obtain a learning pressure-decreased value decremented in the learning control cycle and to obtain a learning pressure-increased value incremented in the learning control cycle. A present pressure-decreased value decremented in a control cycle after the learning control cycle is obtained to calculate a target pressure-increased value on the basis of the obtained learning pressure-decreased value and learning pressure-increased value whereby the braking hydraulic pressure is first increased to the vicinity of a wheel locking limit pressure after decreased in the pressure-decreasing mode.
    • 一种用于控制施加到车轮的制动液压的车轮滑动控制装置,以便执行有效的制动操作。 车轮滑动控制装置包括:控制单元,用于根据车轮滑动状态生成控制信号,以执行制动压力控制循环,使得制动液压设定为减压模式,然后设定为增压模式 。 在控制单元中,要执行的制动压力控制循环中的一个被确定为学习控制循环,以获得在学习控制循环中递减的学习压力降低值,并获得在学习控制中增加的学习压力增加值 周期。 在获得学习控制周期之后的控制周期中,目前的压力降低值基于获得的学习压力降低值和学习压力增加值计算目标增压值,由此制动液压首先 在压力降低模式下降低后,增加到车轮锁定极限压力附近。